远程 Windows 主机上安装的 QEMU 版本可能受到 e1000e 设备仿真器中拒绝服务 (DoS) 漏洞的影响，这是堆释放后使用问题所致。攻击者可利用此问题，通过发送由 e1000e_write_packet_to_guest() 接收的数据包来引发 DoS。

请注意，Nessus 尚未测试这些问题，而是只依靠应用程序自我报告的版本号。

远程 Oracle Linux 7 主机上安装的程序包受到 ELSA-2021-9034 公告中提及的多个漏洞的影响。

  - 在版本低于 5.2.0 的 QEMU 的 USB 仿真器中发现越界读取/写入访问缺陷。USBDevice“setup_len”超过其在 do_token_in、do_token_out 例程中的“data_buf[4096]”时，在处理来自客户机的 USB 数据包时会发生此问题。客户机用户可利用此缺陷使 QEMU 进程崩溃，进而导致拒绝服务，或者可能在主机上以 QEMU 进程的权限执行任意代码。(CVE-2020-14364)

  - 在 QEMU 5.0.0 及之前所有版本中，处理网络数据包的过程中可能发生断言失败。该问题会影响 e1000e 和 vmxnet3 网络设备。恶意的客户机用户/进程可利用此缺陷中止主机上的 QEMU 进程，导致 hw/net/net_tx_pkt.c 的net_tx_pkt_add_raw_fragment 中出现拒绝服务情况。(CVE-2020-16092)

  - QEMU 4.2.0 中的 hw/pci/msix.c 允许客户机操作系统用户通过在 msi-x mmio 操作中构建地址来触发越界访问。(CVE-2020-13754)

  - 在 QEMU 5.0.0 及之前的版本中，hw/scsi/megasas.c 中的 megasas_lookup_frame 存在越界读取漏洞，该漏洞是客户机操作系统用户构建的 reply_queue_head 字段所致。(CVE-2020-13362)

  - QEMU 4.2.0 中的 hw/net/tulip.c 在复制 tx/rx 缓冲区期间存在缓冲区溢出问题，这是因为未针对 r/w 数据长度验证帧大小所导致。(CVE-2020-11102)

  - 在 2020 年 7 月 20 日之前的 QEMU 中，XGMAC 以太网控制器的 hw/net/xgmac.c 存在缓冲区溢出问题。此问题会在数据包传输期间发生，并影响 highbank 和 midway 模拟计算机。客户机用户或进程可利用此缺陷造成主机上的 QEMU 进程崩溃，进而导致拒绝服务，或者可能以进程的权限执行任意代码。此问题已在 commit 5519724a13664b43e225ca05351c60b4468e4555 中修复。
    (CVE-2020-15863)

  - QEMU 4.2.0 中的 hw/pci/pci.c 允许客户机操作系统用户通过在 PCI 配置空间末尾附近提供地址来触发越界访问。(CVE-2020-13791)

  - 在 QEMU 4.2.0 中，exec.c 中的 address_space_map 可触发与 BounceBuffer 相关的空指针取消引用。
    (CVE-2020-13659)

  - 在 QEMU 4.2.0 中，hw/sd/sd.c 的 sd_wp_addr () 操作期间导致越界读取。客户机操作系统用户可造成 QEMU 进程崩溃。(CVE-2020-13253)

  - 在 QEMU 中实现针对在 4.0 版中引入并在 5.0.0 版中修正的 ARM 的指针验证 (PAuth) 支持时发现一个缺陷。签名生成进程的一般故障导致使用相同的签名对每个 PAuth 强制执行的指针进行签名。本地攻击者可获取受保护指针的签名，并滥用此缺陷为 QEMU 上运行的所有程序绕过 PAuth 保护。(CVE-2020-10702)

  - QEMU 4.0.0 中的 hw/display/bochs-display.c 未确保足够的 PCI 配置空间分配，从而导致涉及 PCIe 扩展配置空间的缓冲区溢出。(CVE-2019-15034)

  - 在 QEMU 5.0.0 及之前所有版本中，在 SM501 显示驱动程序实现中发现一个整数溢出问题。通过 sm501_2d_engine_write() 回调处理 MMIO 写入操作时，在 COPY_AREA 宏中会发生此缺陷。本地攻击者可滥用此缺陷使主机上 hw/display/sm501.c 的 sm501_2d_operation() 中的 QEMU 进程崩溃，从而导致拒绝服务。(CVE-2020-12829)

  - 在 QEMU 5.0.0 之前版本中，audio/ossaudio.c 的 oss_write 会错误处理缓冲位置。(CVE-2020-14415)

  - 当 TD 列表存在循环时，QEMU 5.0.0 的 hw/usb/hcd-ohci.c 中存在无限循环。(CVE-2020-25625)

  - QEMU 5.0.0 的 hw/usb/hcd-xhci.c 中存在释放后使用，这是未检查 usb_packet_map 返回值所致。(CVE-2020-25084)

  - QEMU 4.2.1 的 hw/display/ati_2d.c 的 ati_2d_blt 在计算中可能会遇到超出限制的情况。客户机可造成 QEMU 进程崩溃。(CVE-2020-27616)

  - 在 libslirp 4.3.1 及之前所有版本中，ncsi.c 存在缓冲区过度读取问题，这是因为它会尝试读取特定量的标头数据，即使其超过总数据包长度亦然。(CVE-2020-29129)

  - 在 libslirp 4.3.1 及之前所有版本中，slirp.c 存在缓冲区过度读取问题，这是因为它会尝试读取特定量的标头数据，即使其超过总数据包长度亦然。(CVE-2020-29130)

  - QEMU 5.0.0 的 hw/usb/hcd-ohci.c 通过从主机控制器驱动程序获取的值存在基于堆栈的缓冲区过度读取。(CVE-2020-25624)

  - QEMU 5.0.0 中的 hw/net/e1000e_core.c 存在无限循环问题，通过具有空缓冲区地址的 RX 描述符可触发此问题。
    (CVE-2020-28916)

  - 在 QEMU 仿真器的 SLiRP 网络实现中发现越界读取漏洞。
    在 icmp6_send_echoreply() 例程回复 ICMP 回显请求（也称为 ping）时，会发生此缺陷。恶意客户机可利用此缺陷泄漏主机内存的内容，从而可能导致信息泄露。此缺陷影响 4.3.1 之前的 libslirp 版本。(CVE-2020-10756)

  - 在 QEMU 的 USB EHCI 仿真代码中发现一个可访问的断言问题。处理 USB 请求时，可能会发生此问题，这是因为缺少对 DMA 内存映射失败的处理所导致。客户机中的恶意特权用户可滥用此缺陷，发送虚假的 USB 请求并造成主机上的 QEMU 进程崩溃，从而导致拒绝服务。(CVE-2020-25723)

请注意，Nessus 尚未测试此问题，而是只依赖于应用程序自我报告的版本号。

远程 AlmaLinux 8 主机存在安装的程序包该程序包受到 ALSA-2021:1762 公告中提及的多个漏洞的影响。

    * libvirt在 qemu_agent.c 内 qemuAgentGetInterfaces() 中存在双重释放CVE-2020-25637

    * QEMUhw/pci/msix.c 中 msix_table_mmio_write() 中的堆缓冲区溢出 (CVE-2020-27821)

    * QEMUideatapi处理读取命令时的 OOB 访问 (CVE-2020-29443)

    * QEMUblock/iscsi.c 中的 iscsi_aio_ioctl_cb() 中的堆缓冲区溢出可能导致信息泄露 (CVE-2020-11947)

    * QEMUhw/net/net_tx_pkt.c 中 net_tx_pkt_add_raw_fragment() 中存在可访问断言失败 (CVE-2020-16092)

    * QEMU在 hw/net/e1000e_core.c 中e1000e_write_packet_to_guest() 中存在无限循环 (CVE-2020-25707)

    * QEMU通过 hw/usb/hcd-ehci.c 中的 usb_packet_unmap() 导致的断言失败 (CVE-2020-25723)

    * QEMUe1000e空数据包描述符情况中的无限循环情况 (CVE-2020-28916)

    * QEMUslirp处理 ARP/NCSI 数据包时的越界访问CVE-2020-29129、 CVE-2020-29130

Tenable 已直接从 AlmaLinux 安全公告中提取上述描述块。

请注意，Nessus 尚未测试这些问题，而是只依据应用程序自我报告的版本号进行判断。

远程 Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 20.10 主机上安装的程序包受到 USN-4725-1 公告中提及的多个漏洞的影响。

  - 在 QEMU 4.1.0 中，block/iscsi.c 的 iscsi_aio_ioctl_cb 中存在基于堆的缓冲区过度读取问题，可能将进程内存中不相关的信息泄露给攻击者。(CVE-2020-11947)

  - QEMU 4.2.0 的 hw/net/e1000e_core.c 中存在释放后使用问题，原因是客户机操作系统用户可将数据地址设置为 e1000e 的 MMIO 地址，从而触发 e1000e 数据包。(CVE-2020-15859)

  - 在初始化内存区域缓存期间，在 QEMU 的内存管理 API 中发现一个缺陷。
    此问题可导致在执行 MMIO 操作时对 MSI-X 表进行越界写入访问。客户机用户可利用此缺陷造成主机上的 QEMU 进程崩溃，从而导致拒绝服务。此缺陷会影响 QEMU 5.2.0 之前版本。(CVE-2020-27821)

  - QEMU 5.0.0 中的 hw/net/e1000e_core.c 存在无限循环问题，通过具有空缓冲区地址的 RX 描述符可触发此问题。
    (CVE-2020-28916)

  - 在 QEMU 5.1.0 中，hw/ide/atapi.c 的 ide_atapi_cmd_reply_end 允许越界读取访问，这是因为未验证缓冲区索引所导致。(CVE-2020-29443)

请注意，Nessus 尚未测试此问题，而是只依据应用程序自我报告的版本号进行判断。

The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2021:1762 advisory.

  - QEMU: heap buffer overflow in iscsi_aio_ioctl_cb() in block/iscsi.c may lead to information disclosure     (CVE-2020-11947)

  - QEMU: reachable assertion failure in net_tx_pkt_add_raw_fragment() in hw/net/net_tx_pkt.c (CVE-2020-16092)

  - libvirt: double free in qemuAgentGetInterfaces() in qemu_agent.c (CVE-2020-25637)

  - QEMU: infinite loop in e1000e_write_packet_to_guest() in hw/net/e1000e_core.c (CVE-2020-25707)

  - QEMU: assertion failure through usb_packet_unmap() in hw/usb/hcd-ehci.c (CVE-2020-25723)

  - QEMU: heap buffer overflow in msix_table_mmio_write() in hw/pci/msix.c (CVE-2020-27821)

  - QEMU: e1000e: infinite loop scenario in case of null packet descriptor (CVE-2020-28916)

  - CVE-2020-29130 QEMU: slirp: out-of-bounds access while processing ARP/NCSI packets (CVE-2020-29129)

  - CVE-2020-29129  QEMU: slirp: out-of-bounds access while processing ARP/NCSI packets (CVE-2020-29130)

  - QEMU: ide: atapi: OOB access while processing read commands (CVE-2020-29443)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Several vulnerabilities were discovered in QEMU, a fast processor emulator (notably used in KVM and Xen HVM virtualization). An attacker could trigger a denial of service (DoS), information leak, and possibly execute arbitrary code with the privileges of the QEMU process on the host.

CVE-2020-15469

A MemoryRegionOps object may lack read/write callback methods, leading to a NULL pointer dereference.

CVE-2020-15859

QEMU has a use-after-free in hw/net/e1000e_core.c because a guest OS user can trigger an e1000e packet with the data's address set to the e1000e's MMIO address.

CVE-2020-25084

QEMU has a use-after-free in hw/usb/hcd-xhci.c because the usb_packet_map return value is not checked.

CVE-2020-28916

hw/net/e1000e_core.c has an infinite loop via an RX descriptor with a NULL buffer address.

CVE-2020-29130

slirp.c has a buffer over-read because it tries to read a certain amount of header data even if that exceeds the total packet length.

CVE-2020-29443

ide_atapi_cmd_reply_end in hw/ide/atapi.c allows out-of-bounds read access because a buffer index is not validated.

CVE-2021-20181

9pfs: ZDI-CAN-10904: QEMU Plan 9 file system TOCTOU privilege escalation vulnerability.

CVE-2021-20221

aarch64: GIC: out-of-bound heap buffer access via an interrupt ID field.

For Debian 9 stretch, these problems have been fixed in version 1:2.8+dfsg-6+deb9u13.

We recommend that you upgrade your qemu packages.

For the detailed security status of qemu please refer to its security tracker page at: https://security-tracker.debian.org/tracker/qemu

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for qemu fixes the following issues :

Fix OOB access in sm501 device emulation (CVE-2020-12829, bsc#1172385)

Fix OOB access possibility in MegaRAID SAS 8708EM2 emulation (CVE-2020-13362 bsc#1172383)

Fix use-after-free in usb xhci packet handling (CVE-2020-25723, bsc#1178934)

Fix use-after-free in usb ehci packet handling (CVE-2020-25084, bsc#1176673)

Fix OOB access in usb hcd-ohci emulation (CVE-2020-25624, bsc#1176682)

Fix infinite loop (DoS) in usb hcd-ohci emulation (CVE-2020-25625, bsc#1176684)

Fix guest triggerable assert in shared network handling code (CVE-2020-27617, bsc#1178174)

Fix infinite loop (DoS) in e1000e device emulation (CVE-2020-28916, bsc#1179468)

Fix OOB access in atapi emulation (CVE-2020-29443, bsc#1181108)

Fix NULL pointer deref. (DoS) in mmio ops (CVE-2020-15469, bsc#1173612)

Fix infinite loop (DoS) in e1000 device emulation (CVE-2021-20257, bsc#1182577)

Fix OOB access (stack overflow) in rtl8139 NIC emulation (CVE-2021-3416, bsc#1182968)

Fix OOB access (stack overflow) in other NIC emulations (CVE-2021-3416)

Fix OOB access in SLIRP ARP/NCSI packet processing (CVE-2020-29129, bsc#1179466, CVE-2020-29130, bsc#1179467)

Fix NULL pointer dereference possibility (DoS) in MegaRAID SAS 8708EM2 emulation (CVE-2020-13659 bsc#1172386

Fix OOB access in iscsi (CVE-2020-11947 bsc#1180523)

Fix OOB access in vmxnet3 emulation (CVE-2021-20203 bsc#1181639)

Fix buffer overflow in the XGMAC device (CVE-2020-15863 bsc#1174386)

Fix DoS in packet processing of various emulated NICs (CVE-2020-16092 bsc#1174641)

Fix OOB access while processing USB packets (CVE-2020-14364 bsc#1175441)

Fix package scripts to not use hard-coded paths for temporary working directories and log files (bsc#1182425)

Fix potential privilege escalation in virtfs (CVE-2021-20181 bsc#1182137)

Drop the 'ampersand 0x25 shift altgr' line in pt-br keymap file (bsc#1129962)

Fix migration failure with error message: 'error while loading state section id 3(ram) (bsc#1154790)

Fix OOB access possibility in ES1370 audio device emulation (CVE-2020-13361 bsc#1172384)

Fix OOB access in ROM loading (CVE-2020-13765 bsc#1172478)

Fix OOB access in ARM interrupt handling (CVE-2021-20221 bsc#1181933)

Tweaks to spec file for better formatting, and remove not needed BuildRequires for e2fsprogs-devel and libpcap-devel

Use '%service_del_postun_without_restart' instead of '%service_del_postun' to avoid 'Failed to try-restart qemu-ga@.service' error while updating the qemu-guest-agent.
(bsc#1178565)

Fix OOB access in sm501 device emulation (CVE-2020-12829, bsc#1172385)

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for qemu fixes the following issues :

  - CVE-2020-12829: Fix OOB access in sm501 device emulation     (bsc#1172385)

  - CVE-2020-25723: Fix use-after-free in usb xhci packet     handling (bsc#1178934)

  - CVE-2020-25084: Fix use-after-free in usb ehci packet     handling (bsc#1176673)

  - CVE-2020-25625: Fix infinite loop (DoS) in usb hcd-ohci     emulation (bsc#1176684)

  - CVE-2020-25624: Fix OOB access in usb hcd-ohci emulation     (bsc#1176682)

  - CVE-2020-27617: Fix guest triggerable assert in shared     network handling code (bsc#1178174)

  - CVE-2020-28916: Fix infinite loop (DoS) in e1000e device     emulation (bsc#1179468)

  - CVE-2020-29443: Fix OOB access in atapi emulation     (bsc#1181108)

  - CVE-2020-27821: Fix heap overflow in MSIx emulation     (bsc#1179686)

  - CVE-2020-15469: Fix NULL pointer deref. (DoS) in mmio     ops (bsc#1173612)

  - CVE-2021-20257: Fix infinite loop (DoS) in e1000 device     emulation (bsc#1182577)

  - CVE-2021-3416: Fix OOB access (stack overflow) in     rtl8139 NIC emulation (bsc#1182968)

  - CVE-2021-3416: Fix OOB access (stack overflow) in other     NIC emulations (bsc#1182968)

  - CVE-2020-27616: Fix OOB access in ati-vga emulation     (bsc#1178400)

  - CVE-2020-29129: Fix OOB access in SLIRP ARP/NCSI packet     processing (bsc#1179466, CVE-2020-29130, bsc#1179467)

  - Fix package scripts to not use hard coded paths for     temporary working directories and log files     (bsc#1182425)

  - Add split-provides through forsplits/13 to cover updates     of SLE15-SP2 to SLE15-SP3, and openSUSE equivalents     (bsc#1184064)

  - Added a few more usability improvements for our git     packaging workflow

This update was imported from the SUSE:SLE-15-SP2:Update update project.

According to the versions of the qemu packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - In QEMU through 5.0.0, an integer overflow was found in     the SM501 display driver implementation. This flaw     occurs in the COPY_AREA macro while handling MMIO write     operations through the sm501_2d_engine_write()     callback. A local attacker could abuse this flaw to     crash the QEMU process in sm501_2d_operation() in     hw/display/sm501.c on the host, resulting in a denial     of service.(CVE-2020-12829)

  - slirp.c in libslirp through 4.3.1 has a buffer     over-read because it tries to read a certain amount of     header data even if that exceeds the total packet     length.(CVE-2020-29130)

  - ncsi.c in libslirp through 4.3.1 has a buffer over-read     because it tries to read a certain amount of header     data even if that exceeds the total packet     length.(CVE-2020-29129)

  - hw/net/e1000e_core.c in QEMU 5.0.0 has an infinite loop     via an RX descriptor with a NULL buffer     address.(CVE-2020-28916)

  - ati_2d_blt in hw/display/ati_2d.c in QEMU 4.2.1 can     encounter an outside-limits situation in a calculation.
    A guest can crash the QEMU process.(CVE-2020-27616)

  - eth_get_gso_type in net/eth.c in QEMU 4.2.1 allows     guest OS users to trigger an assertion failure. A guest     can crash the QEMU process via packet data that lacks a     valid Layer 3 protocol.(CVE-2020-27617)

  - A reachable assertion issue was found in the USB EHCI     emulation code of QEMU. It could occur while processing     USB requests due to missing handling of DMA memory map     failure. A malicious privileged user within the guest     may abuse this flaw to send bogus USB requests and     crash the QEMU process on the host, resulting in a     denial of service.(CVE-2020-25723)

  - hw/usb/hcd-ohci.c in QEMU 5.0.0 has a stack-based     buffer over-read via values obtained from the host     controller driver.(CVE-2020-25624)

  - hw/usb/hcd-ohci.c in QEMU 5.0.0 has an infinite loop     when a TD list has a loop.(CVE-2020-25625)

  - In libslirp 4.1.0, as used in QEMU 4.2.0, tcp_subr.c     misuses snprintf return values, leading to a buffer     overflow in later code.(CVE-2020-8608)

  - tcp_emu in tcp_subr.c in libslirp 4.1.0, as used in     QEMU 4.2.0, mismanages memory, as demonstrated by IRC     DCC commands in EMU_IRC. This can cause a heap-based     buffer overflow or other out-of-bounds access which can     lead to a DoS or potential execute arbitrary     code.(CVE-2020-7039)

  - ip_reass in ip_input.c in libslirp 4.0.0 has a     heap-based buffer overflow via a large packet because     it mishandles a case involving the first     fragment.(CVE-2019-14378)

  - A flaw was found in the memory management API of QEMU     during the initialization of a memory region cache.
    This issue could lead to an out-of-bounds write access     to the MSI-X table while performing MMIO operations. A     guest user may abuse this flaw to crash the QEMU     process on the host, resulting in a denial of service.
    This flaw affects QEMU versions prior to     5.2.0.(CVE-2020-27821)

  - QEMU: reachable assertion failure in     net_tx_pkt_add_raw_fragment() in hw/net/net_tx_pkt.c     (CVE-2020-16092)

  - hw/pci/pci.c in QEMU 4.2.0 allows guest OS users to     trigger an out-of-bounds access by providing an address     near the end of the PCI configuration     space(CVE-2020-13791)

  - qmp_guest_file_read in qga/commands-posix.c and     qga/commands-win32.c in qemu-ga (aka QEMU Guest Agent)     in QEMU 2.12.50 has an integer overflow causing a     g_malloc0() call to trigger a segmentation fault when     trying to allocate a large memory chunk. The     vulnerability can be exploited by sending a crafted QMP     command (including guest-file-read with a large count     value) to the agent via the listening     socket.(CVE-2018-12617)

  - sd_wp_addr in hw/sd/sd.c in QEMU 4.2.0 uses an     unvalidated address, which leads to an out-of-bounds     read during sdhci_write() operations. A guest OS user     can crash the QEMU process.(CVE-2020-13253)

  - QEMU 4.1.0 has a memory leak in zrle_compress_data in     ui/vnc-enc-zrle.c during a VNC disconnect operation     because libz is misused, resulting in a situation where     memory allocated in deflateInit2 is not freed in     deflateEnd.(CVE-2019-20382)

  - An integer overflow was found in QEMU 4.0.1 through     4.2.0 in the way it implemented ATI VGA emulation. This     flaw occurs in the ati_2d_blt() routine in     hw/display/ati-2d.c while handling MMIO write     operations through the ati_mm_write() callback. A     malicious guest could abuse this flaw to crash the QEMU     process, resulting in a denial of     service.(CVE-2020-11869)

  - This vulnerability has been modified since it was last     analyzed by the NVD. It is awaiting reanalysis which     may result in further changes to the information     provided.(CVE-2020-13659)

  - A flaw was found in QEMU in the implementation of the     Pointer Authentication (PAuth) support for ARM     introduced in version 4.0 and fixed in version 5.0.0. A     general failure of the signature generation process     caused every PAuth-enforced pointer to be signed with     the same signature. A local attacker could obtain the     signature of a protected pointer and abuse this flaw to     bypass PAuth protection for all programs running on     QEMU.(CVE-2020-10702)

  - hw/net/xgmac.c in the XGMAC Ethernet controller in QEMU     before 07-20-2020 has a buffer overflow. This occurs     during packet transmission and affects the highbank and     midway emulated machines. A guest user or process could     use this flaw to crash the QEMU process on the host,     resulting in a denial of service or potential     privileged code execution. This was fixed in commit     5519724a13664b43e225ca05351c60b4468e4555.(CVE-2020-1586     3)

  - In QEMU 5.0.0 and earlier, megasas_lookup_frame in     hw/scsi/megasas.c has an out-of-bounds read via a     crafted reply_queue_head field from a guest OS     user.(CVE-2020-13362)

  - ** DISPUTED ** An issue was discovered in ide_dma_cb()     in hw/ide/core.c in QEMU 2.4.0 through 4.2.0. The guest     system can crash the QEMU process in the host system     via a special SCSI_IOCTL_SEND_COMMAND. It hits an     assertion that implies that the size of successful DMA     transfers there must be a multiple of 512 (the size of     a sector). NOTE: a member of the QEMU security team     disputes the significance of this issue because a     'privileged guest user has many ways to cause similar     DoS effect, without triggering this     assert.'(CVE-2019-20175)

  - In QEMU 5.0.0 and earlier, es1370_transfer_audio in     hw/audio/es1370.c does not properly validate the frame     count, which allows guest OS users to trigger an     out-of-bounds access during an es1370_write()     operation.(CVE-2020-13361)

  - rom_copy() in hw/core/loader.c in QEMU 4.1.0 does not     validate the relationship between two addresses, which     allows attackers to trigger an invalid memory copy     operation.(CVE-2020-13765)

  - libslirp 4.0.0, as used in QEMU 4.1.0, has a     use-after-free in ip_reass in     ip_input.c.(CVE-2019-15890)

  - A use after free vulnerability in ip_reass() in     ip_input.c of libslirp 4.2.0 and prior releases allows     crafted packets to cause a denial of     service.(CVE-2020-1983)

  - ati-vga in hw/display/ati.c in QEMU 4.2.0 allows guest     OS users to trigger infinite recursion via a crafted     mm_index value during an ati_mm_read or ati_mm_write     call.(CVE-2020-13800)

  - An out-of-bounds heap buffer access flaw was found in     the way the iSCSI Block driver in QEMU versions 2.12.0     before 4.2.1 handled a response coming from an iSCSI     server while checking the status of a Logical Address     Block (LBA) in an iscsi_co_block_status() routine. A     remote user could use this flaw to crash the QEMU     process, resulting in a denial of service or potential     execution of arbitrary code with privileges of the QEMU     process on the host.(CVE-2020-1711)

  - tftp.c in libslirp 4.1.0, as used in QEMU 4.2.0, does     not prevent ..\ directory traversal on     Windows.(CVE-2020-7211)

  - An out-of-bounds read vulnerability was found in the     SLiRP networking implementation of the QEMU emulator.
    This flaw occurs in the icmp6_send_echoreply() routine     while replying to an ICMP echo request, also known as     ping. This flaw allows a malicious guest to leak the     contents of the host memory, resulting in possible     information disclosure. This flaw affects versions of     libslirp before 4.3.1.(CVE-2020-10756)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-1762 advisory.

    - Resolves: bz#1917451       (CVE-2020-29443 virt:rhel/qemu-kvm: QEMU: ide: atapi: OOB access while processing read commands     [rhel-8.4.0])
    - Resolves: bz#1919111       (CVE-2020-35517 virt:rhel/qemu-kvm: QEMU: virtiofsd: potential privileged host device access from guest     [rhel-8.4.0])
    - Resolves: bz#1912974       (CVE-2020-11947 virt:rhel/qemu-kvm: QEMU: heap buffer overflow in iscsi_aio_ioctl_cb() in block/iscsi.c     may lead to information disclosure [rhel-8])
    - Resolves: bz#1918054       (CVE-2020-10756 virt:rhel/qemu-kvm: QEMU: slirp: networking out-of-bounds read information disclosure     vulnerability [rhel-8.4.0])
    - Resolves: bz#1904393       (CVE-2020-27821 virt:rhel/qemu-kvm: QEMU: heap buffer overflow in msix_table_mmio_write() in     hw/pci/msix.c [rhel-8])
    - Resolves: bz#1898628       (CVE-2020-25723 virt:rhel/qemu-kvm: QEMU: assertion failure through usb_packet_unmap() in hw/usb/hcd-     ehci.c [rhel-8])
    - Resolves: bz#1903070       (CVE-2020-25707 CVE-2020-28916 virt:rhel/qemu-kvm: various flaws [rhel-8])
    - Resolves: bz#1902237       (CVE-2020-29129 CVE-2020-29130 virt:rhel/qemu-kvm: QEMU: slirp: out-of-bounds access while processing     ARP/NCSI packets [rhel-8])
    - Resolves: bz#1860994       (CVE-2020-16092 virt:rhel/qemu-kvm: QEMU: reachable assertion failure in net_tx_pkt_add_raw_fragment()     in hw/net/net_tx_pkt.c [rhel-8])

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the versions of the qemu package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - In QEMU through 5.0.0, an integer overflow was found in     the SM501 display driver implementation. This flaw     occurs in the COPY_AREA macro while handling MMIO write     operations through the sm501_2d_engine_write()     callback. A local attacker could abuse this flaw to     crash the QEMU process in sm501_2d_operation() in     hw/display/sm501.c on the host, resulting in a denial     of service.(CVE-2020-12829)

  - hw/usb/hcd-ohci.c in QEMU 5.0.0 has a stack-based     buffer over-read via values obtained from the host     controller driver.(CVE-2020-25624)

  - A reachable assertion issue was found in the USB EHCI     emulation code of QEMU. It could occur while processing     USB requests due to missing handling of DMA memory map     failure. A malicious privileged user within the guest     may abuse this flaw to send bogus USB requests and     crash the QEMU process on the host, resulting in a     denial of service.(CVE-2020-25723)

  - hw/usb/hcd-ohci.c in QEMU 5.0.0 has an infinite loop     when a TD list has a loop.(CVE-2020-25625)

  - hw/net/e1000e_core.c in QEMU 5.0.0 has an infinite loop     via an RX descriptor with a NULL buffer     address.(CVE-2020-28916)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the qemu-kvm packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - sd_wp_addr in hw/sd/sd.c in QEMU 4.2.0 uses an unvalidated address, which leads to an out-of-bounds read     during sdhci_write() operations. A guest OS user can crash the QEMU process. (CVE-2020-13253)

  - In QEMU 5.0.0 and earlier, es1370_transfer_audio in hw/audio/es1370.c does not properly validate the frame     count, which allows guest OS users to trigger an out-of-bounds access during an es1370_write() operation.
    (CVE-2020-13361)

  - In QEMU 5.0.0 and earlier, megasas_lookup_frame in hw/scsi/megasas.c has an out-of-bounds read via a     crafted reply_queue_head field from a guest OS user. (CVE-2020-13362)

  - address_space_map in exec.c in QEMU 4.2.0 can trigger a NULL pointer dereference related to BounceBuffer.
    (CVE-2020-13659)

  - hw/pci/msix.c in QEMU 4.2.0 allows guest OS users to trigger an out-of-bounds access via a crafted address     in an msi-x mmio operation. (CVE-2020-13754)

  - hw/pci/pci.c in QEMU 4.2.0 allows guest OS users to trigger an out-of-bounds access by providing an     address near the end of the PCI configuration space. (CVE-2020-13791)

  - In QEMU through 5.0.0, an assertion failure can occur in the network packet processing. This issue affects     the e1000e and vmxnet3 network devices. A malicious guest user/process could use this flaw to abort the     QEMU process on the host, resulting in a denial of service condition in net_tx_pkt_add_raw_fragment in     hw/net/net_tx_pkt.c. (CVE-2020-16092)

  - A heap-based buffer overflow was found in QEMU through 5.0.0 in the SDHCI device emulation support. It     could occur while doing a multi block SDMA transfer via the sdhci_sdma_transfer_multi_blocks() routine in     hw/sd/sdhci.c. A guest user or process could use this flaw to crash the QEMU process on the host,     resulting in a denial of service condition, or potentially execute arbitrary code with privileges of the     QEMU process on the host. (CVE-2020-17380)

  - QEMU 5.0.0 has a heap-based Buffer Overflow in flatview_read_continue in exec.c because hw/sd/sdhci.c     mishandles a write operation in the SDHC_BLKSIZE case. (CVE-2020-25085)

  - hw/usb/hcd-ohci.c in QEMU 5.0.0 has a stack-based buffer over-read via values obtained from the host     controller driver. (CVE-2020-25624)

  - hw/usb/hcd-ohci.c in QEMU 5.0.0 has an infinite loop when a TD list has a loop. (CVE-2020-25625)

  - eth_get_gso_type in net/eth.c in QEMU 4.2.1 allows guest OS users to trigger an assertion failure. A guest     can crash the QEMU process via packet data that lacks a valid Layer 3 protocol. (CVE-2020-27617)

  - hw/net/e1000e_core.c in QEMU 5.0.0 has an infinite loop via an RX descriptor with a NULL buffer address.
    (CVE-2020-28916)

  - The patch for CVE-2020-17380/CVE-2020-25085 was found to be ineffective, thus making QEMU vulnerable to     the out-of-bounds read/write access issues previously found in the SDHCI controller emulation code. This     flaw allows a malicious privileged guest to crash the QEMU process on the host, resulting in a denial of     service or potential code execution. QEMU up to (including) 5.2.0 is affected by this. (CVE-2021-3409)

  - A potential stack overflow via infinite loop issue was found in various NIC emulators of QEMU in versions     up to and including 5.2.0. The issue occurs in loopback mode of a NIC wherein reentrant DMA checks get     bypassed. A guest user/process may use this flaw to consume CPU cycles or crash the QEMU process on the     host resulting in DoS scenario. (CVE-2021-3416)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the qemu packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - hw/ide/pci.c in QEMU before 5.1.1 can trigger a NULL     pointer dereference because it lacks a pointer check     before an ide_cancel_dma_sync call.(CVE-2020-25743)

  - pci_change_irq_level in hw/pci/pci.c in QEMU before     5.1.1 has a NULL pointer dereference because     pci_get_bus() might not return a valid     pointer.(CVE-2020-25742)

  - eth_get_gso_type in net/eth.c in QEMU 4.2.1 allows     guest OS users to trigger an assertion failure. A guest     can crash the QEMU process via packet data that lacks a     valid Layer 3 protocol.(CVE-2020-27617)

  - address_space_map in exec.c in QEMU 4.2.0 can trigger a     NULL pointer dereference related to     BounceBuffer.(CVE-2020-13659)

  - A reachable assertion issue was found in the USB EHCI     emulation code of QEMU. It could occur while processing     USB requests due to missing handling of DMA memory map     failure. A malicious privileged user within the guest     may abuse this flaw to send bogus USB requests and     crash the QEMU process on the host, resulting in a     denial of service.(CVE-2020-25723)

  - hw/usb/hcd-ohci.c in QEMU 5.0.0 has an infinite loop     when a TD list has a loop.(CVE-2020-25625)

  - In QEMU through 5.0.0, an assertion failure can occur     in the network packet processing. This issue affects     the e1000e and vmxnet3 network devices. A malicious     guest user/process could use this flaw to abort the     QEMU process on the host, resulting in a denial of     service condition in net_tx_pkt_add_raw_fragment in     hw/net/net_tx_pkt.c.(CVE-2020-16092)

  - In QEMU 5.0.0 and earlier, megasas_lookup_frame in     hw/scsi/megasas.c has an out-of-bounds read via a     crafted reply_queue_head field from a guest OS     user.(CVE-2020-13362)

  - The (1) v9fs_create and (2) v9fs_lcreate functions in     hw/9pfs/9p.c in QEMU (aka Quick Emulator) allow local     guest OS privileged users to cause a denial of service     (file descriptor or memory consumption) via vectors     related to an already in-use fid.(CVE-2017-7377)

  - In QEMU 5.0.0 and earlier, es1370_transfer_audio in     hw/audio/es1370.c does not properly validate the frame     count, which allows guest OS users to trigger an     out-of-bounds access during an es1370_write()     operation.(CVE-2020-13361)

  - hw/net/xgmac.c in the XGMAC Ethernet controller in QEMU     before 07-20-2020 has a buffer overflow. This occurs     during packet transmission and affects the highbank and     midway emulated machines. A guest user or process could     use this flaw to crash the QEMU process on the host,     resulting in a denial of service or potential     privileged code execution. This was fixed in commit     5519724a13664b43e225ca05351c60b4468e4555.(CVE-2020-1586     3)

  - hw/usb/hcd-ohci.c in QEMU 5.0.0 has a stack-based     buffer over-read via values obtained from the host     controller driver.(CVE-2020-25624)

  - rom_copy() in hw/core/loader.c in QEMU 4.1.0 does not     validate the relationship between two addresses, which     allows attackers to trigger an invalid memory copy     operation.(CVE-2020-13765)

  - An out-of-bounds read/write access flaw was found in     the USB emulator of the QEMU in versions before 5.2.0.
    This issue occurs while processing USB packets from a     guest when USBDevice 'setup_len' exceeds its     'data_buf[4096]' in the do_token_in, do_token_out     routines. This flaw allows a guest user to crash the     QEMU process, resulting in a denial of service, or the     potential execution of arbitrary code with the     privileges of the QEMU process on the     host.(CVE-2020-14364)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3099 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-3099-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                          Abhijith PA     September 05, 2022                            https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : qemu     Version        : 1:3.1+dfsg-8+deb10u9     CVE ID         : CVE-2020-13253 CVE-2020-15469 CVE-2020-15859 CVE-2020-25084                      CVE-2020-25085 CVE-2020-25624 CVE-2020-25625 CVE-2020-25723                      CVE-2020-27617 CVE-2020-27821 CVE-2020-28916 CVE-2020-29129                      CVE-2020-29443 CVE-2020-35504 CVE-2020-35505 CVE-2021-3392                      CVE-2021-3416 CVE-2021-3507 CVE-2021-3527 CVE-2021-3582                      CVE-2021-3607 CVE-2021-3608 CVE-2021-3682 CVE-2021-3713                      CVE-2021-3748 CVE-2021-3930 CVE-2021-4206 CVE-2021-4207                      CVE-2021-20181 CVE-2021-20196 CVE-2021-20203 CVE-2021-20221                      CVE-2021-20257 CVE-2022-26354 CVE-2022-35414

    Multiple security issues were discovered in QEMU, a fast processor     emulator, which could result in denial of service or the the execution     of arbitrary code.

    For Debian 10 buster, these problems have been fixed in version     1:3.1+dfsg-8+deb10u9.

    We recommend that you upgrade your qemu packages.

    For the detailed security status of qemu please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/qemu

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

This update for qemu fixes the following issues :

Fix OOB access in sm501 device emulation (CVE-2020-12829, bsc#1172385)

Fix OOB access possibility in MegaRAID SAS 8708EM2 emulation (CVE-2020-13362 bsc#1172383)

Fix use-after-free in usb xhci packet handling (CVE-2020-25723, bsc#1178934)

Fix use-after-free in usb iehci packet handling (CVE-2020-25084, bsc#1176673)

Fix infinite loop (DoS) in usb hcd-ohci emulation (CVE-2020-25625, bsc#1176684)

Fix OOB access in usb hcd-ohci emulation (CVE-2020-25624, bsc#1176682)

Fix guest triggerable assert in shared network handling code (CVE-2020-27617, bsc#1178174)

Fix infinite loop (DoS) in e1000e device emulation (CVE-2020-28916, bsc#1179468)

Fix OOB access in atapi emulation (CVE-2020-29443, bsc#1181108)

Fix heap overflow in MSIx emulation (CVE-2020-27821, bsc#1179686)

Fix NULL pointer deref. (DoS) in mmio ops (CVE-2020-15469, bsc#1173612)

Fix infinite loop (DoS) in e1000 device emulation (CVE-2021-20257, bsc#1182577)

Fix OOB access (stack overflow) in rtl8139 NIC emulation (CVE-2021-3416, bsc#1182968)

Fix OOB access (stack overflow) in other NIC emulations (CVE-2021-3416)

Fix OOB access in SLIRP ARP/NCSI packet processing (CVE-2020-29129, bsc#1179466, CVE-2020-29130, bsc#1179467)

Fix NULL pointer dereference possibility (DoS) in MegaRAID SAS 8708EM2 emulation (CVE-2020-13659 bsc#1172386)

Fix issue where s390 guest fails to find zipl boot menu index (bsc#1183979)

Fix OOB access in iscsi (CVE-2020-11947 bsc#1180523)

Fix OOB access in vmxnet3 emulation (CVE-2021-20203 bsc#1181639)

Fix package scripts to not use hard-coded paths for temporary working directories and log files (bsc#1182425)

Fix potential privilege escalation in virtfs (CVE-2021-20181 bsc#1182137)

Apply fixes to qemu scsi passthrough with respect to timeout and error conditions, including using more correct status codes. (bsc#1178049)

Fix OOB access in ARM interrupt handling (CVE-2021-20221 bsc#1181933)

Make note that this patch previously included addresses (CVE-2020-13765 bsc#1172478)

Tweaks to spec file for better formatting, and remove not needed BuildRequires for e2fsprogs-devel and libpcap-devel

Fix vfio-pci device on s390 enters error state (bsc#1179725)

Fix PCI devices are unavailable after a subsystem reset. (bsc#1179726)

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for qemu fixes the following issues :

CVE-2020-12829: Fix OOB access in sm501 device emulation (bsc#1172385)

CVE-2020-25723: Fix use-after-free in usb xhci packet handling (bsc#1178934)

CVE-2020-25084: Fix use-after-free in usb ehci packet handling (bsc#1176673)

CVE-2020-25625: Fix infinite loop (DoS) in usb hcd-ohci emulation (bsc#1176684)

CVE-2020-25624: Fix OOB access in usb hcd-ohci emulation (bsc#1176682)

CVE-2020-27617: Fix guest triggerable assert in shared network handling code (bsc#1178174)

CVE-2020-28916: Fix infinite loop (DoS) in e1000e device emulation (bsc#1179468)

CVE-2020-29443: Fix OOB access in atapi emulation (bsc#1181108)

CVE-2020-27821: Fix heap overflow in MSIx emulation (bsc#1179686)

CVE-2020-15469: Fix NULL pointer deref. (DoS) in mmio ops (bsc#1173612)

CVE-2021-20257: Fix infinite loop (DoS) in e1000 device emulation (bsc#1182577)

CVE-2021-3416: Fix OOB access (stack overflow) in rtl8139 NIC emulation (bsc#1182968)

CVE-2021-3416: Fix OOB access (stack overflow) in other NIC emulations (bsc#1182968)

CVE-2020-27616: Fix OOB access in ati-vga emulation (bsc#1178400)

CVE-2020-29129: Fix OOB access in SLIRP ARP/NCSI packet processing (bsc#1179466, CVE-2020-29130, bsc#1179467)

Fix package scripts to not use hard-coded paths for temporary working directories and log files (bsc#1182425)

Add split-provides through forsplits/13 to cover updates of SLE15-SP2 to SLE15-SP3, and openSUSE equivalents (bsc#1184064)

Added a few more usability improvements for our git packaging workflow

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
143479	QEMU < 5.2.0-rc3 堆释放后使用 DoS (CVE-2020-28916)	Nessus	Windows	2020/12/4	2024/2/7	medium
146269	Oracle Linux 7：qemu (ELSA-2021-9034)	Nessus	Oracle Linux Local Security Checks	2021/2/5	2024/11/2	medium
157696	AlmaLinux 8virt:rhel 和 virt-devel:rhel (ALSA-2021:1762)	Nessus	Alma Linux Local Security Checks	2022/2/9	2025/1/13	medium
146303	Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS：QEMU 漏洞 (USN-4725-1)	Nessus	Ubuntu Local Security Checks	2021/2/8	2025/9/3	high
149772	CentOS 8 : virt:rhel and virt-devel:rhel (CESA-2021:1762)	Nessus	CentOS Local Security Checks	2021/5/19	2023/12/29	medium
146609	Debian DLA-2560-1 : qemu security update	Nessus	Debian Local Security Checks	2021/2/19	2024/1/22	high
148757	SUSE SLES15 Security Update : qemu (SUSE-SU-2021:1244-1)	Nessus	SuSE Local Security Checks	2021/4/19	2024/1/3	high
149640	openSUSE Security Update : qemu (openSUSE-2021-600)	Nessus	SuSE Local Security Checks	2021/5/18	2024/1/1	medium
147523	EulerOS Virtualization 2.9.1 : qemu (EulerOS-SA-2021-1632)	Nessus	Huawei Local Security Checks	2021/3/10	2022/5/10	high
155325	Oracle Linux 8 : virt:ol / and / virt-devel:rhel (ELSA-2021-1762)	Nessus	Oracle Linux Local Security Checks	2021/11/12	2024/11/1	medium
146222	EulerOS 2.0 SP9 : qemu (EulerOS-SA-2021-1256)	Nessus	Huawei Local Security Checks	2021/2/5	2024/1/23	medium
146243	EulerOS 2.0 SP9 : qemu (EulerOS-SA-2021-1275)	Nessus	Huawei Local Security Checks	2021/2/5	2024/1/23	medium
156489	EulerOS Virtualization 3.0.2.6 : qemu-kvm (EulerOS-SA-2021-2855)	Nessus	Huawei Local Security Checks	2022/1/6	2023/11/21	medium
147490	EulerOS Virtualization 3.0.6.6 : qemu (EulerOS-SA-2021-1455)	Nessus	Huawei Local Security Checks	2021/3/10	2024/1/11	medium
164678	Debian dla-3099 : qemu - security update	Nessus	Debian Local Security Checks	2022/9/5	2025/1/22	high
148751	SUSE SLES12 Security Update : qemu (SUSE-SU-2021:1242-1)	Nessus	SuSE Local Security Checks	2021/4/19	2024/1/4	high
148755	SUSE SLED15 / SLES15 Security Update : qemu (SUSE-SU-2021:1243-1)	Nessus	SuSE Local Security Checks	2021/4/19	2024/1/3	medium

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