The remote Ubuntu 14.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-2692-1 advisory.

    Matt Tait discovered that QEMU incorrectly handled PIT emulation. In a non-default configuration, a     malicious guest could use this issue to cause a denial of service, or possibly execute arbitrary code on     the host as the user running the QEMU process. In the default installation, when QEMU is used with     libvirt, attackers would be isolated by the libvirt AppArmor profile. (CVE-2015-3214)

    Kevin Wolf discovered that QEMU incorrectly handled processing ATAPI commands. A malicious guest could use     this issue to cause a denial of service, or possibly execute arbitrary code on the host as the user     running the QEMU process. In the default installation, when QEMU is used with libvirt, attackers would be     isolated by the libvirt AppArmor profile. (CVE-2015-5154)

    Zhu Donghai discovered that QEMU incorrectly handled the SCSI driver. A malicious guest could use this     issue to cause a denial of service, or possibly execute arbitrary code on the host as the user running the     QEMU process. In the default installation, when QEMU is used with libvirt, attackers would be isolated by     the libvirt AppArmor profile. This issue only affected Ubuntu 15.04. (CVE-2015-5158)

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

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

kvm was updated to fix 33 security issues.

These security issues were fixed :

  - CVE-2016-4439: Avoid OOB access in 53C9X emulation     (bsc#980711)

  - CVE-2016-4441: Avoid OOB access in 53C9X emulation     (bsc#980723)

  - CVE-2016-3710: Fixed VGA emulation based OOB access with     potential for guest escape (bsc#978158)

  - CVE-2016-3712: Fixed VGa emulation based DOS and OOB     read access exploit (bsc#978160)

  - CVE-2016-4037: Fixed USB ehci based DOS (bsc#976109)

  - CVE-2016-2538: Fixed potential OOB access in USB net     device emulation (bsc#967969)

  - CVE-2016-2841: Fixed OOB access / hang in ne2000     emulation (bsc#969350)

  - CVE-2016-2858: Avoid potential DOS when using QEMU     pseudo random number generator (bsc#970036)

  - CVE-2016-2857: Fixed OOB access when processing IP     checksums (bsc#970037)

  - CVE-2016-4001: Fixed OOB access in Stellaris enet     emulated nic (bsc#975128)

  - CVE-2016-4002: Fixed OOB access in MIPSnet emulated     controller (bsc#975136)

  - CVE-2016-4020: Fixed possible host data leakage to guest     from TPR access (bsc#975700)

  - CVE-2015-3214: Fixed OOB read in i8254 PIC (bsc#934069)

  - CVE-2014-9718: Fixed the handling of malformed or short     ide PRDTs to avoid any opportunity for guest to cause     DoS by abusing that interface (bsc#928393)

  - CVE-2014-3689: Fixed insufficient parameter validation     in rectangle functions (bsc#901508)

  - CVE-2014-3615: The VGA emulator in QEMU allowed local     guest users to read host memory by setting the display     to a high resolution (bsc#895528).

  - CVE-2015-5239: Integer overflow in vnc_client_read() and     protocol_client_msg() (bsc#944463).

  - CVE-2015-5278: Infinite loop in ne2000_receive()     function (bsc#945989).

  - CVE-2015-5279: Heap-based buffer overflow in the     ne2000_receive function in hw/net/ne2000.c in QEMU     allowed guest OS users to cause a denial of service     (instance crash) or possibly execute arbitrary code via     vectors related to receiving packets (bsc#945987).

  - CVE-2015-5745: Buffer overflow in virtio-serial     (bsc#940929).

  - CVE-2015-6855: hw/ide/core.c in QEMU did not properly     restrict the commands accepted by an ATAPI device, which     allowed guest users to cause a denial of service or     possibly have unspecified other impact via certain IDE     commands, as demonstrated by a WIN_READ_NATIVE_MAX     command to an empty drive, which triggers a     divide-by-zero error and instance crash (bsc#945404).

  - CVE-2015-7295: hw/virtio/virtio.c in the Virtual Network     Device (virtio-net) support in QEMU, when big or     mergeable receive buffers are not supported, allowed     remote attackers to cause a denial of service (guest     network consumption) via a flood of jumbo frames on the     (1) tuntap or (2) macvtap interface (bsc#947159).

  - CVE-2015-7549: PCI NULL pointer dereferences     (bsc#958917).

  - CVE-2015-8504: VNC floating point exception     (bsc#958491).

  - CVE-2015-8558: Infinite loop in ehci_advance_state     resulting in DoS (bsc#959005).

  - CVE-2015-8613: Wrong sized memset in megasas command     handler (bsc#961358).

  - CVE-2015-8619: Potential DoS for long HMP sendkey     command argument (bsc#960334).

  - CVE-2015-8743: OOB memory access in ne2000 ioport r/w     functions (bsc#960725).

  - CVE-2016-1568: AHCI use-after-free in aio port commands     (bsc#961332).

  - CVE-2016-1714: Potential OOB memory access in processing     firmware configuration (bsc#961691).

  - CVE-2016-1922: NULL pointer dereference when processing     hmp i/o command (bsc#962320).

  - CVE-2016-1981: Potential DoS (infinite loop) in e1000     device emulation by malicious privileged user within     guest (bsc#963782).

  - CVE-2016-2198: Malicious privileged guest user were able     to cause DoS by writing to read-only EHCI capabilities     registers (bsc#964413).

The update package also includes non-security fixes. See advisory for details.

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.

- Rebased to version 2.4.0 * Support for virtio-gpu, 2D     only * Support for virtio-based keyboard/mouse/tablet     emulation * x86 support for memory hot-unplug

  - ACPI v5.1 table support for 'virt' board *     CVE-2015-3209: pcnet: multi-tmd buffer overflow in the     tx path (bz #1230536) * CVE-2015-3214: i8254: out-of-     bounds memory access (bz #1243728) * CVE-2015-5158: scsi     stack-based buffer overflow (bz #1246025) *     CVE-2015-5154: ide: atapi: heap overflow during I/O     buffer memory access (bz #1247141) * CVE-2015-5165:
    rtl8139 uninitialized heap memory information leakage to     guest (bz #1249755) * CVE-2015-5166: BlockBackend object     use after free issue (bz #1249758) * CVE-2015-5745:
    buffer overflow in virtio- serial (bz #1251160)

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

Petr Matousek of Red Hat Inc. reports :

Due converting PIO to the new memory read/write api we no longer provide separate I/O region lenghts for read and write operations. As a result, reading from PIT Mode/Command register will end with accessing pit->channels with invalid index and potentially cause memory corruption and/or minor information leak.

A privileged guest user in a guest with QEMU PIT emulation enabled could potentially (tough unlikely) use this flaw to execute arbitrary code on the host with the privileges of the hosting QEMU process.

Please note that by default QEMU/KVM guests use in-kernel (KVM) PIT emulation and are thus not vulnerable to this issue.

Updated qemu-kvm packages that fix two security issues and one bug are now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. The qemu-kvm package provides the user-space component for running virtual machines using KVM.

A heap buffer overflow flaw was found in the way QEMU's IDE subsystem handled I/O buffer access while processing certain ATAPI commands. A privileged guest user in a guest with the CDROM drive enabled could potentially use this flaw to execute arbitrary code on the host with the privileges of the host's QEMU process corresponding to the guest.
(CVE-2015-5154)

An out-of-bounds memory access flaw, leading to memory corruption or possibly an information leak, was found in QEMU's pit_ioport_read() function. A privileged guest user in a QEMU guest, which had QEMU PIT emulation enabled, could potentially, in rare cases, use this flaw to execute arbitrary code on the host with the privileges of the hosting QEMU process. (CVE-2015-3214)

Red Hat would like to thank Matt Tait of Google's Project Zero security team for reporting the CVE-2015-3214 issue. The CVE-2015-5154 issue was discovered by Kevin Wolf of Red Hat.

This update also fixes the following bug :

* Due to an incorrect implementation of portable memory barriers, the QEMU emulator in some cases terminated unexpectedly when a virtual disk was under heavy I/O load. This update fixes the implementation in order to achieve correct synchronization between QEMU's threads. As a result, the described crash no longer occurs. (BZ#1233643)

All qemu-kvm users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. After installing this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again for this update to take effect.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2015:1507 advisory.

    KVM (Kernel-based Virtual Machine) is a full virtualization solution for     Linux on AMD64 and Intel 64 systems. The qemu-kvm package provides the     user-space component for running virtual machines using KVM.

    A heap buffer overflow flaw was found in the way QEMU's IDE subsystem     handled I/O buffer access while processing certain ATAPI commands.
    A privileged guest user in a guest with the CDROM drive enabled could     potentially use this flaw to execute arbitrary code on the host with the     privileges of the host's QEMU process corresponding to the guest.
    (CVE-2015-5154)

    An out-of-bounds memory access flaw, leading to memory corruption or     possibly an information leak, was found in QEMU's pit_ioport_read()     function. A privileged guest user in a QEMU guest, which had QEMU PIT     emulation enabled, could potentially, in rare cases, use this flaw to     execute arbitrary code on the host with the privileges of the hosting QEMU     process. (CVE-2015-3214)

    Red Hat would like to thank Matt Tait of Google's Project Zero security     team for reporting the CVE-2015-3214 issue. The CVE-2015-5154 issue was     discovered by Kevin Wolf of Red Hat.

    This update also fixes the following bug:

    * Due to an incorrect implementation of portable memory barriers, the QEMU     emulator in some cases terminated unexpectedly when a virtual disk was     under heavy I/O load. This update fixes the implementation in order to     achieve correct synchronization between QEMU's threads. As a result, the     described crash no longer occurs. (BZ#1233643)

    All qemu-kvm users are advised to upgrade to these updated packages, which     contain backported patches to correct these issues. After installing this     update, shut down all running virtual machines. Once all virtual machines     have shut down, start them again for this update to take effect.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise 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.

- Fix crash in qemu_spice_create_display (bz #1163047) *     CVE-2015-3209: pcnet: multi-tmd buffer overflow in the     tx path (bz #1230536) * CVE-2015-3214: i8254:
    out-of-bounds memory access (bz #1243728) *     CVE-2015-5154: ide: atapi: heap overflow during I/O     buffer memory access (bz #1247141) * CVE-2015-5745:
    buffer overflow in virtio-serial (bz #1251160) *     CVE-2015-5165: rtl8139 uninitialized heap memory     information leakage to guest (bz #1249755)

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

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2015-1507 advisory.

    - Resolves: bz#1243726       (CVE-2015-3214 qemu-kvm: qemu: i8254: out-of-bounds memory access in pit_ioport_read function     [rhel-7.1.z])
    - Resolves: bz#1243689       (EMBARGOED CVE-2015-5154 qemu-kvm: qemu: ide: atapi: heap overflow during I/O buffer memory access     [rhel-7.1.z])

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.

- Rebased to version 2.3.1

    - Fix crash in qemu_spice_create_display (bz #1163047)

    - Fix qemu-img map crash for unaligned image (bz       #1229394)

    - CVE-2015-3209: pcnet: multi-tmd buffer overflow in the       tx path (bz #1230536)

    - CVE-2015-3214: i8254: out-of-bounds memory access (bz       #1243728)

    - CVE-2015-5158: scsi stack-based buffer overflow (bz       #1246025)

    - CVE-2015-5154: ide: atapi: heap overflow during I/O       buffer memory access (bz #1247141)

    - CVE-2015-5166: BlockBackend object use after free       issue (bz #1249758)

    - CVE-2015-5745: buffer overflow in virtio-serial (bz       #1251160)

    - CVE-2015-5165: rtl8139 uninitialized heap memory       information leakage to guest (bz #1249755)

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

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - The pit_ioport_read in i8254.c in the Linux kernel before 2.6.33 and QEMU before 2.3.1 does not     distinguish between read lengths and write lengths, which might allow guest OS users to execute arbitrary     code on the host OS by triggering use of an invalid index. (CVE-2015-3214)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2015:1508 advisory.

    KVM (Kernel-based Virtual Machine) is a full virtualization solution for     Linux on AMD64 and Intel 64 systems. The qemu-kvm-rhev package provides the     user-space component for running virtual machines using KVM.

    A heap buffer overflow flaw was found in the way QEMU's IDE subsystem     handled I/O buffer access while processing certain ATAPI commands.
    A privileged guest user in a guest with the CDROM drive enabled could     potentially use this flaw to execute arbitrary code on the host with the     privileges of the host's QEMU process corresponding to the guest.
    (CVE-2015-5154)

    An out-of-bounds memory access flaw, leading to memory corruption or     possibly an information leak, was found in QEMU's pit_ioport_read()     function. A privileged guest user in a QEMU guest, which had QEMU PIT     emulation enabled, could potentially, in rare cases, use this flaw to     execute arbitrary code on the host with the privileges of the hosting QEMU     process. (CVE-2015-3214)

    Red Hat would like to thank Matt Tait of Google's Project Zero security     team for reporting the CVE-2015-3214 issue. The CVE-2015-5154 issue was     discovered by Kevin Wolf of Red Hat.

    All qemu-kvm-rhev users are advised to upgrade to these updated packages,     which contain a backported patch to correct this issue. After installing     this update, shut down all running virtual machines. Once all virtual     machines have shut down, start them again for this update to take effect.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise 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.

qemu was updated to fix 37 security issues.

These security issues were fixed :

  - CVE-2016-4439: Avoid OOB access in 53C9X emulation     (bsc#980711)

  - CVE-2016-4441: Avoid OOB access in 53C9X emulation     (bsc#980723)

  - CVE-2016-4952: Avoid OOB access in Vmware PV SCSI     emulation (bsc#981266)

  - CVE-2015-8817: Avoid OOB access in PCI DMA I/O     (bsc#969121)

  - CVE-2015-8818: Avoid OOB access in PCI DMA I/O     (bsc#969122)

  - CVE-2016-3710: Fixed VGA emulation based OOB access with     potential for guest escape (bsc#978158)

  - CVE-2016-3712: Fixed VGa emulation based DOS and OOB     read access exploit (bsc#978160)

  - CVE-2016-4037: Fixed USB ehci based DOS (bsc#976109)

  - CVE-2016-2538: Fixed potential OOB access in USB net     device emulation (bsc#967969)

  - CVE-2016-2841: Fixed OOB access / hang in ne2000     emulation (bsc#969350)

  - CVE-2016-2858: Avoid potential DOS when using QEMU     pseudo random number generator (bsc#970036)

  - CVE-2016-2857: Fixed OOB access when processing IP     checksums (bsc#970037)

  - CVE-2016-4001: Fixed OOB access in Stellaris enet     emulated nic (bsc#975128)

  - CVE-2016-4002: Fixed OOB access in MIPSnet emulated     controller (bsc#975136)

  - CVE-2016-4020: Fixed possible host data leakage to guest     from TPR access (bsc#975700)

  - CVE-2015-3214: Fixed OOB read in i8254 PIC (bsc#934069)

  - CVE-2014-9718: Fixed the handling of malformed or short     ide PRDTs to avoid any opportunity for guest to cause     DoS by abusing that interface (bsc#928393)

  - CVE-2014-3689: Fixed insufficient parameter validation     in rectangle functions (bsc#901508)

  - CVE-2014-3615: The VGA emulator in QEMU allowed local     guest users to read host memory by setting the display     to a high resolution (bsc#895528).

  - CVE-2015-5239: Integer overflow in vnc_client_read() and     protocol_client_msg() (bsc#944463).

  - CVE-2015-5745: Buffer overflow in virtio-serial     (bsc#940929).

  - CVE-2015-7295: hw/virtio/virtio.c in the Virtual Network     Device (virtio-net) support in QEMU, when big or     mergeable receive buffers are not supported, allowed     remote attackers to cause a denial of service (guest     network consumption) via a flood of jumbo frames on the     (1) tuntap or (2) macvtap interface (bsc#947159).

  - CVE-2015-7549: PCI NULL pointer dereferences     (bsc#958917).

  - CVE-2015-8504: VNC floating point exception     (bsc#958491).

  - CVE-2015-8558: Infinite loop in ehci_advance_state     resulting in DoS (bsc#959005).

  - CVE-2015-8567: A guest repeatedly activating a vmxnet3     device can leak host memory (bsc#959386).

  - CVE-2015-8568: A guest repeatedly activating a vmxnet3     device can leak host memory (bsc#959386).

  - CVE-2015-8613: Wrong sized memset in megasas command     handler (bsc#961358).

  - CVE-2015-8619: Potential DoS for long HMP sendkey     command argument (bsc#960334).

  - CVE-2015-8743: OOB memory access in ne2000 ioport r/w     functions (bsc#960725).

  - CVE-2015-8744: Incorrect l2 header validation could have     lead to a crash via assert(2) call (bsc#960835).

  - CVE-2015-8745: Reading IMR registers could have lead to     a crash via assert(2) call (bsc#960708).

  - CVE-2016-1568: AHCI use-after-free in aio port commands     (bsc#961332).

  - CVE-2016-1714: Potential OOB memory access in processing     firmware configuration (bsc#961691).

  - CVE-2016-1922: NULL pointer dereference when processing     hmp i/o command (bsc#962320).

  - CVE-2016-1981: Potential DoS (infinite loop) in e1000     device emulation by malicious privileged user within     guest (bsc#963782).

  - CVE-2016-2198: Malicious privileged guest user were able     to cause DoS by writing to read-only EHCI capabilities     registers (bsc#964413).

This non-security issue was fixed

  - bsc#886378: qemu truncates vhd images in virt-rescue

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.

The remote host is affected by the vulnerability described in GLSA-201510-02 (QEMU: Arbitrary code execution)

    Heap-based buffer overflow has been found in QEMU&rsquo;s PCNET controller.
  Impact :

    A remote attacker could execute arbitrary code via a specially crafted       packets.
  Workaround :

    There is no known workaround at this time.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
85080	Ubuntu 14.04 LTS : QEMU vulnerabilities (USN-2692-1)	Nessus	Ubuntu Local Security Checks	2015/7/29	2025/9/3	medium
93169	SUSE SLES11 Security Update : kvm (SUSE-SU-2016:1698-1)	Nessus	SuSE Local Security Checks	2016/8/29	2026/1/27	critical
85592	Fedora 23 : qemu-2.4.0-1.fc23 (2015-13358)	Nessus	Fedora Local Security Checks	2015/8/24	2021/1/11	medium
87702	FreeBSD : qemu -- code execution on host machine (aea8d90e-b0c1-11e5-8d13-bc5ff45d0f28)	Nessus	FreeBSD Local Security Checks	2016/1/4	2021/1/4	medium
85030	CentOS 7 : qemu-kvm (CESA-2015:1507)	Nessus	CentOS Local Security Checks	2015/7/28	2021/1/4	high
85040	RHEL 7 : qemu-kvm (RHSA-2015:1507)	Nessus	Red Hat Local Security Checks	2015/7/28	2025/4/15	high
93180	SUSE SLES11 Security Update : kvm (SUSE-SU-2016:1785-1)	Nessus	SuSE Local Security Checks	2016/8/29	2026/1/27	critical
85727	Fedora 21 : qemu-2.1.3-9.fc21 (2015-13404)	Nessus	Fedora Local Security Checks	2015/9/2	2021/1/11	high
85035	Oracle Linux 7 : qemu-kvm (ELSA-2015-1507)	Nessus	Oracle Linux Local Security Checks	2015/7/28	2024/11/1	critical
85480	Fedora 22 : qemu-2.3.1-1.fc22 (2015-13402)	Nessus	Fedora Local Security Checks	2015/8/18	2021/1/11	medium
218916	Linux Distros Unpatched Vulnerability : CVE-2015-3214	Nessus	Misc.	2025/3/4	2026/7/17	critical
117306	RHEL 7 : qemu-kvm-rhev (RHSA-2015:1508)	Nessus	Red Hat Local Security Checks	2018/9/6	2024/11/4	critical
91660	SUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2016:1560-1)	Nessus	SuSE Local Security Checks	2016/6/17	2021/1/6	critical
86687	GLSA-201510-02 : QEMU: Arbitrary code execution	Nessus	Gentoo Local Security Checks	2015/11/2	2021/1/11	medium

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