Oracle Linux 8:kvm_utils (ELSA-2022-9460)

high Nessus 插件 ID 161895

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 主机上安装的多个程序包受到 ELSA-2022-9460 公告中提及的多个漏洞影响。

- 在 QEMU 的 virtio-net 设备中发现一个释放后使用漏洞。当描述符的地址属于非直接访问区域时即会发生这种情况,原因是在取消映射 virtqueue elem 后设置了 num_buffers。恶意来宾用户可利用此缺陷造成 QEMU 崩溃,从而导致拒绝服务情形或可能使用 QEMU 进程的权限在主机上执行代码。(CVE-2021-3748)

- 在 QEMU 的 virtio-net 设备中发现一个缺陷。修复 CVE-2021-3748时无意间引入了此缺陷,该缺陷在出错时忘记取消映射缓存的 virtqueue 元素,从而导致内存泄漏和其他意外结果。受影响的 QEMU 版本:6.2.0. (CVE-2022-26353)

- 在 QEMU 的 vhost-vsock 设备中发现一个缺陷。如果出错,无效元素无法在释放内存前从 virtqueue 分离,从而导致内存泄漏和其他意外结果。
QEMU 6.2.0 及更低版本会受到影响。(CVE-2022-26354)

- 在 libvirt nwfilter 驱动程序中发现一个缺陷。在迭代 virNWFilterObj 实例之前,virNWFilterObjListNumOfNWFilters 方法无法获取 `driver->nwfilters` 互斥体。没有保护机制可以阻止其他线程并行修改 `driver->nwfilters` 对象。此缺陷允许恶意的无特权用户通过 libvirt 的 API virConnectNumOfNWFilters 利用此问题,从而使网络过滤器管理后台程序 (libvirtd/virtnwfilterd) 崩溃。(CVE-2022-0897)

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来判断。

解决方案

更新受影响的程序包。

另见

https://linux.oracle.com/errata/ELSA-2022-9460.html

插件详情

严重性: High

ID: 161895

文件名: oraclelinux_ELSA-2022-9460.nasl

版本: 1.3

类型: local

代理: unix

发布时间: 2022/6/6

最近更新时间: 2023/1/9

支持的传感器: Frictionless Assessment Agent, Nessus Agent, Nessus

风险信息

VPR

风险因素: High

分数: 7.3

CVSS v2

风险因素: Medium

基本分数: 6.9

时间分数: 5.1

矢量: CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C

CVSS 分数来源: CVE-2021-3748

CVSS v3

风险因素: High

基本分数: 7.5

时间分数: 6.5

矢量: CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

时间矢量: CVSS:3.0/E:U/RL:O/RC:C

漏洞信息

CPE: 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: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: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, 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

必需的 KB 项: Host/OracleLinux, Host/RedHat/release, Host/RedHat/rpm-list, Host/local_checks_enabled

易利用性: No known exploits are available

补丁发布日期: 2022/6/6

漏洞发布日期: 2022/3/16

参考资料信息

CVE: CVE-2021-3748, CVE-2022-0897, CVE-2022-26353, CVE-2022-26354