Oracle Linux 8：virt: ol / 和 / virt-devel: ol (ELSA-2021-4191)
medium Nessus 插件 ID 155984
语言：
简介
远程 Oracle Linux 主机缺少一个或多个安全更新。描述
远程 Oracle Linux 8 主机上安装的程序包受到 ELSA-2021-4191 公告中提及的多个漏洞的影响。- 在 QEMU 的 SLiRP 网络实现中发现无效指针初始化问题。该缺陷存在于 udp_input() 函数中，可能在处理小于“udphdr”结构大小的 udp 数据包时发生。此问题可能导致越界读取访问或主机内存间接泄露给客户机。此漏洞对数据机密性威胁最大。此缺陷影响 libslirp 4.6.0 之前的版本。(CVE-2021-3594)
- libvirt：ACL 失败时，virStoragePoolLookupByTargetPath API 存在锁定不当 (CVE-2021-3667)
- 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 QEMU 的 SLiRP 网络实现中发现无效指针初始化问题。该缺陷存在于 bootp_input() 函数中，可能在处理小于“bootp_t”结构大小的 udp 数据包时发生。恶意客户机可利用此缺陷从主机泄漏 10 字节未初始化的堆内存。此漏洞对数据机密性威胁最大。此缺陷影响 libslirp 4.6.0 之前的版本。(CVE-2021-3592)
- 在 QEMU 的 SLiRP 网络实现中发现无效指针初始化问题。该缺陷存在于 udp6_input() 函数中，可能在处理小于“udphdr”结构大小的 udp 数据包时发生。此问题可能导致越界读取访问或主机内存间接泄露给客户机。此漏洞对数据机密性威胁最大。此缺陷影响 libslirp 4.6.0 之前的版本。(CVE-2021-3593)
- 在 QEMU 的 SLiRP 网络实现中发现无效指针初始化问题。该缺陷存在于 tftp_input() 函数中，可能在处理小于“tftp_t”结构大小的 udp 数据包时发生。此问题可能导致越界读取访问或主机内存间接泄露给客户机。此漏洞对数据机密性威胁最大。此缺陷影响 libslirp 4.6.0 之前的版本。(CVE-2021-3595)
- libvirt：生成不安全的 sVirt 标签 (CVE-2021-3631)
请注意，Nessus 尚未测试此问题，而是只依靠应用程序自我报告的版本号来判断。
解决方案
更新受影响的程序包。另见
插件详情
严重性: Medium
ID: 155984
文件名: oraclelinux_ELSA-2021-4191.nasl
版本: 1.4
类型: local
代理: unix
发布时间: 2021/12/10
最近更新时间: 2023/11/22
支持的传感器: Frictionless Assessment Agent, Nessus Agent, Nessus
风险信息
VPR
风险因素: Medium
分数: 6.0
CVSS v2
风险因素: Low
基本分数: 3.3
时间分数: 2.6
矢量: CVSS2#AV:L/AC:M/Au:N/C:P/I:P/A:N
CVSS 分数来源: CVE-2021-3631
CVSS v3
风险因素: Medium
基本分数: 6.3
时间分数: 5.7
矢量: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
时间矢量: CVSS:3.0/E:P/RL:O/RC:C
漏洞信息
CPE: cpe:/o:oracle:linux:8, p-cpe:/a:oracle:linux:hivex, p-cpe:/a:oracle:linux:hivex-devel, p-cpe:/a:oracle:linux:libguestfs, p-cpe:/a:oracle:linux:libguestfs-bash-completion, p-cpe:/a:oracle:linux:libguestfs-benchmarking, p-cpe:/a:oracle:linux:libguestfs-devel, p-cpe:/a:oracle:linux:libguestfs-gfs2, p-cpe:/a:oracle:linux:libguestfs-gobject, p-cpe:/a:oracle:linux:libguestfs-gobject-devel, p-cpe:/a:oracle:linux:libguestfs-inspect-icons, p-cpe:/a:oracle:linux:libguestfs-java, p-cpe:/a:oracle:linux:libguestfs-java-devel, p-cpe:/a:oracle:linux:libguestfs-javadoc, p-cpe:/a:oracle:linux:libguestfs-man-pages-ja, p-cpe:/a:oracle:linux:libguestfs-man-pages-uk, p-cpe:/a:oracle:linux:libguestfs-rescue, p-cpe:/a:oracle:linux:libguestfs-rsync, p-cpe:/a:oracle:linux:libguestfs-tools, p-cpe:/a:oracle:linux:libguestfs-tools-c, p-cpe:/a:oracle:linux:libguestfs-winsupport, p-cpe:/a:oracle:linux:libguestfs-xfs, p-cpe:/a:oracle:linux:libiscsi, p-cpe:/a:oracle:linux:libiscsi-devel, p-cpe:/a:oracle:linux:libiscsi-utils, p-cpe:/a:oracle:linux:libnbd, p-cpe:/a:oracle:linux:libnbd-devel, p-cpe:/a:oracle:linux:libvirt, p-cpe:/a:oracle:linux:libvirt-admin, p-cpe:/a:oracle:linux:libvirt-bash-completion, p-cpe:/a:oracle:linux:libvirt-client, p-cpe:/a:oracle:linux:libvirt-daemon, p-cpe:/a:oracle:linux:libvirt-daemon-config-network, p-cpe:/a:oracle:linux:libvirt-daemon-config-nwfilter, p-cpe:/a:oracle:linux:libvirt-daemon-driver-interface, p-cpe:/a:oracle:linux:libvirt-daemon-driver-network, p-cpe:/a:oracle:linux:libvirt-daemon-driver-nodedev, p-cpe:/a:oracle:linux:libvirt-daemon-driver-nwfilter, p-cpe:/a:oracle:linux:libvirt-daemon-driver-qemu, p-cpe:/a:oracle:linux:libvirt-daemon-driver-secret, p-cpe:/a:oracle:linux:libvirt-daemon-driver-storage, p-cpe:/a:oracle:linux:libvirt-daemon-driver-storage-core, p-cpe:/a:oracle:linux:libvirt-daemon-driver-storage-disk, p-cpe:/a:oracle:linux:libvirt-daemon-driver-storage-gluster, p-cpe:/a:oracle:linux:libvirt-daemon-driver-storage-iscsi, p-cpe:/a:oracle:linux:libvirt-daemon-driver-storage-iscsi-direct, p-cpe:/a:oracle:linux:libvirt-daemon-driver-storage-logical, p-cpe:/a:oracle:linux:libvirt-daemon-driver-storage-mpath, p-cpe:/a:oracle:linux:libvirt-daemon-driver-storage-rbd, p-cpe:/a:oracle:linux:libvirt-daemon-driver-storage-scsi, p-cpe:/a:oracle:linux:libvirt-daemon-kvm, p-cpe:/a:oracle:linux:libvirt-dbus, p-cpe:/a:oracle:linux:libvirt-devel, p-cpe:/a:oracle:linux:libvirt-docs, p-cpe:/a:oracle:linux:libvirt-libs, p-cpe:/a:oracle:linux:libvirt-lock-sanlock, p-cpe:/a:oracle:linux:libvirt-nss, p-cpe:/a:oracle:linux:lua-guestfs, p-cpe:/a:oracle:linux:nbdfuse, p-cpe:/a:oracle:linux:nbdkit, p-cpe:/a:oracle:linux:nbdkit-bash-completion, p-cpe:/a:oracle:linux:nbdkit-basic-filters, p-cpe:/a:oracle:linux:nbdkit-basic-plugins, p-cpe:/a:oracle:linux:nbdkit-curl-plugin, p-cpe:/a:oracle:linux:nbdkit-devel, p-cpe:/a:oracle:linux:nbdkit-example-plugins, p-cpe:/a:oracle:linux:nbdkit-gzip-plugin, p-cpe:/a:oracle:linux:nbdkit-linuxdisk-plugin, p-cpe:/a:oracle:linux:nbdkit-python-plugin, p-cpe:/a:oracle:linux:nbdkit-server, p-cpe:/a:oracle:linux:nbdkit-ssh-plugin, p-cpe:/a:oracle:linux:nbdkit-vddk-plugin, p-cpe:/a:oracle:linux:nbdkit-xz-filter, p-cpe:/a:oracle:linux:netcf, p-cpe:/a:oracle:linux:netcf-devel, p-cpe:/a:oracle:linux:netcf-libs, p-cpe:/a:oracle:linux:ocaml-hivex, p-cpe:/a:oracle:linux:ocaml-hivex-devel, p-cpe:/a:oracle:linux:ocaml-libguestfs, p-cpe:/a:oracle:linux:ocaml-libguestfs-devel, p-cpe:/a:oracle:linux:ocaml-libnbd, p-cpe:/a:oracle:linux:ocaml-libnbd-devel, p-cpe:/a:oracle:linux:perl-sys-guestfs, p-cpe:/a:oracle:linux:perl-sys-virt, p-cpe:/a:oracle:linux:perl-hivex, p-cpe:/a:oracle:linux:python3-hivex, p-cpe:/a:oracle:linux:python3-libguestfs, p-cpe:/a:oracle:linux:python3-libnbd, p-cpe:/a:oracle:linux:python3-libvirt, p-cpe:/a:oracle:linux:qemu-guest-agent, p-cpe:/a:oracle:linux:qemu-img, p-cpe:/a:oracle:linux:qemu-kvm, p-cpe:/a:oracle:linux:qemu-kvm-block-curl, p-cpe:/a:oracle:linux:qemu-kvm-block-gluster, p-cpe:/a:oracle:linux:qemu-kvm-block-iscsi, p-cpe:/a:oracle:linux:qemu-kvm-block-rbd, p-cpe:/a:oracle:linux:qemu-kvm-block-ssh, p-cpe:/a:oracle:linux:qemu-kvm-common, p-cpe:/a:oracle:linux:qemu-kvm-core, p-cpe:/a:oracle:linux:qemu-kvm-tests, p-cpe:/a:oracle:linux:ruby-hivex, p-cpe:/a:oracle:linux:ruby-libguestfs, p-cpe:/a:oracle:linux:seabios, p-cpe:/a:oracle:linux:seabios-bin, p-cpe:/a:oracle:linux:seavgabios-bin, p-cpe:/a:oracle:linux:sgabios, p-cpe:/a:oracle:linux:sgabios-bin, p-cpe:/a:oracle:linux:supermin, p-cpe:/a:oracle:linux:supermin-devel, p-cpe:/a:oracle:linux:virt-dib, p-cpe:/a:oracle:linux:virt-v2v
必需的 KB 项: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/OracleLinux
可利用: true
易利用性: Exploits are available
补丁发布日期: 2021/11/16
漏洞发布日期: 2020/7/21
参考资料信息
CVE: CVE-2020-15859, CVE-2021-3592, CVE-2021-3593, CVE-2021-3594, CVE-2021-3595, CVE-2021-3631, CVE-2021-3667
IAVB: 2020-B-0041-S