检测

Rocky Linux 8virt:rhel 和 virt-devel:rhel (RLSA-2021:4191)

medium Nessus 插件 ID 185037

语言：

简介

远程 Rocky Linux 主机缺少一个或多个安全更新。

描述

远程 Rocky Linux 8 主机上存在安装的程序包该程序包受到公告 RLSA-2021:4191 中提及的多个漏洞的影响。

 - 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 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)

 - 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)

 - 当 libvirt 为 VM 的动态标签生成 SELinux MCS 类别对时，在 libvirt 发现一个缺陷。此缺陷允许遭到利用的客户机访问为另一个客户机标记的文件，从而导致突破 sVirt 限制。此漏洞最主要的威胁对象是机密性和完整性。
 (CVE-2021-3631)

 - 在 libvirt 的 virStoragePoolLookupByTargetPath API 中发现不当锁定问题。此问题存在于 storagePoolLookupByTargetPath 函数中，其中锁定的 virStoragePoolObj 对象无法在 ACL 权限失败时正确释放。使用有限 ACL 权限连接到读写套接字的客户端可利用此缺陷获取锁定并阻止其他用户访问存储池/卷 API，从而导致拒绝服务情形。此漏洞最大的威胁在于系统可用性。(CVE-2021-3667)

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。

解决方案

更新受影响的程序包。

另见

https://errata.rockylinux.org/RLSA-2021:4191

https://bugzilla.redhat.com/show_bug.cgi?id=1855250

https://bugzilla.redhat.com/show_bug.cgi?id=1859168

https://bugzilla.redhat.com/show_bug.cgi?id=1929357

https://bugzilla.redhat.com/show_bug.cgi?id=1932823

https://bugzilla.redhat.com/show_bug.cgi?id=1933640

https://bugzilla.redhat.com/show_bug.cgi?id=1934509

https://bugzilla.redhat.com/show_bug.cgi?id=1939418

https://bugzilla.redhat.com/show_bug.cgi?id=1942805

https://bugzilla.redhat.com/show_bug.cgi?id=1961562

https://bugzilla.redhat.com/show_bug.cgi?id=1967329

https://bugzilla.redhat.com/show_bug.cgi?id=1967496

https://bugzilla.redhat.com/show_bug.cgi?id=1967716

https://bugzilla.redhat.com/show_bug.cgi?id=1967914

https://bugzilla.redhat.com/show_bug.cgi?id=1969848

https://bugzilla.redhat.com/show_bug.cgi?id=1970484

https://bugzilla.redhat.com/show_bug.cgi?id=1970487

https://bugzilla.redhat.com/show_bug.cgi?id=1970489

https://bugzilla.redhat.com/show_bug.cgi?id=1970491

https://bugzilla.redhat.com/show_bug.cgi?id=1977726

https://bugzilla.redhat.com/show_bug.cgi?id=1982134

https://bugzilla.redhat.com/show_bug.cgi?id=1986094

https://bugzilla.redhat.com/show_bug.cgi?id=1994041

插件详情

严重性: Medium

ID: 185037

文件名: rocky_linux_RLSA-2021-4191.nasl

版本: 1.0

类型: local

发布时间: 2023/11/7

最近更新时间: 2023/11/7

支持的传感器: Continuous Assessment, 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: p-cpe:/a:rocky:linux:libvirt-dbus-debuginfo, p-cpe:/a:rocky:linux:libvirt-daemon-driver-storage-gluster, p-cpe:/a:rocky:linux:nbdkit-python-plugin, p-cpe:/a:rocky:linux:libvirt-daemon-driver-network, p-cpe:/a:rocky:linux:nbdkit-server, p-cpe:/a:rocky:linux:libvirt-daemon-driver-secret, p-cpe:/a:rocky:linux:libvirt-nss, p-cpe:/a:rocky:linux:libvirt-docs, p-cpe:/a:rocky:linux:qemu-kvm-block-curl, p-cpe:/a:rocky:linux:qemu-kvm-block-rbd, p-cpe:/a:rocky:linux:ocaml-libnbd-debuginfo, p-cpe:/a:rocky:linux:qemu-kvm-block-iscsi-debuginfo, p-cpe:/a:rocky:linux:libguestfs-tools-c-debuginfo, p-cpe:/a:rocky:linux:libvirt-daemon-config-nwfilter, p-cpe:/a:rocky:linux:libvirt-python-debugsource, p-cpe:/a:rocky:linux:nbdkit-xz-filter, p-cpe:/a:rocky:linux:seabios, p-cpe:/a:rocky:linux:qemu-img-debuginfo, p-cpe:/a:rocky:linux:qemu-kvm-block-ssh-debuginfo, p-cpe:/a:rocky:linux:nbdkit-example-plugins-debuginfo, p-cpe:/a:rocky:linux:perl-sys-virt-debuginfo, p-cpe:/a:rocky:linux:libguestfs-man-pages-ja, p-cpe:/a:rocky:linux:ocaml-hivex, p-cpe:/a:rocky:linux:libguestfs-rsync, p-cpe:/a:rocky:linux:libvirt-client-debuginfo, p-cpe:/a:rocky:linux:qemu-kvm-block-iscsi, p-cpe:/a:rocky:linux:nbdkit-bash-completion, p-cpe:/a:rocky:linux:libvirt, p-cpe:/a:rocky:linux:libvirt-daemon-driver-storage-mpath-debuginfo, p-cpe:/a:rocky:linux:nbdkit-basic-filters, p-cpe:/a:rocky:linux:netcf-libs, p-cpe:/a:rocky:linux:ruby-libguestfs-debuginfo, p-cpe:/a:rocky:linux:supermin, p-cpe:/a:rocky:linux:libvirt-daemon, p-cpe:/a:rocky:linux:libvirt-admin-debuginfo, p-cpe:/a:rocky:linux:libvirt-lock-sanlock-debuginfo, p-cpe:/a:rocky:linux:ocaml-hivex-devel, p-cpe:/a:rocky:linux:libvirt-daemon-driver-storage-logical-debuginfo, p-cpe:/a:rocky:linux:libvirt-daemon-driver-storage-iscsi, p-cpe:/a:rocky:linux:nbdkit-vddk-plugin-debuginfo, p-cpe:/a:rocky:linux:virt-v2v, p-cpe:/a:rocky:linux:hivex-debugsource, p-cpe:/a:rocky:linux:virt-v2v-debuginfo, p-cpe:/a:rocky:linux:libvirt-daemon-driver-nwfilter, p-cpe:/a:rocky:linux:ocaml-libguestfs-debuginfo, p-cpe:/a:rocky:linux:libvirt-daemon-driver-interface, p-cpe:/a:rocky:linux:qemu-img, p-cpe:/a:rocky:linux:qemu-kvm-core, p-cpe:/a:rocky:linux:nbdkit-gzip-plugin-debuginfo, p-cpe:/a:rocky:linux:libvirt-daemon-driver-network-debuginfo, p-cpe:/a:rocky:linux:nbdkit-vddk-plugin, p-cpe:/a:rocky:linux:qemu-kvm, p-cpe:/a:rocky:linux:qemu-kvm-block-ssh, p-cpe:/a:rocky:linux:ruby-hivex, p-cpe:/a:rocky:linux:libguestfs-benchmarking, p-cpe:/a:rocky:linux:virt-dib-debuginfo, p-cpe:/a:rocky:linux:perl-hivex-debuginfo, p-cpe:/a:rocky:linux:libiscsi-devel, p-cpe:/a:rocky:linux:sgabios-bin, p-cpe:/a:rocky:linux:libvirt-daemon-driver-storage-disk, p-cpe:/a:rocky:linux:nbdkit-linuxdisk-plugin, p-cpe:/a:rocky:linux:libguestfs-benchmarking-debuginfo, p-cpe:/a:rocky:linux:seavgabios-bin, p-cpe:/a:rocky:linux:libvirt-daemon-driver-nodedev, p-cpe:/a:rocky:linux:ocaml-libguestfs, p-cpe:/a:rocky:linux:nbdkit-python-plugin-debuginfo, p-cpe:/a:rocky:linux:libnbd-debugsource, p-cpe:/a:rocky:linux:libvirt-daemon-driver-storage-gluster-debuginfo, p-cpe:/a:rocky:linux:supermin-debuginfo, p-cpe:/a:rocky:linux:libvirt-debugsource, p-cpe:/a:rocky:linux:libvirt-daemon-driver-storage-iscsi-direct-debuginfo, p-cpe:/a:rocky:linux:libguestfs-tools, p-cpe:/a:rocky:linux:libvirt-daemon-driver-storage, p-cpe:/a:rocky:linux:nbdkit-ssh-plugin, p-cpe:/a:rocky:linux:nbdkit-basic-filters-debuginfo, p-cpe:/a:rocky:linux:ruby-libguestfs, p-cpe:/a:rocky:linux:nbdkit-debuginfo, p-cpe:/a:rocky:linux:ocaml-libguestfs-devel, p-cpe:/a:rocky:linux:qemu-kvm-debugsource, p-cpe:/a:rocky:linux:hivex, p-cpe:/a:rocky:linux:nbdkit-basic-plugins-debuginfo, p-cpe:/a:rocky:linux:seabios-bin, p-cpe:/a:rocky:linux:nbdkit-xz-filter-debuginfo, p-cpe:/a:rocky:linux:libvirt-daemon-kvm, p-cpe:/a:rocky:linux:qemu-kvm-tests, p-cpe:/a:rocky:linux:libvirt-daemon-driver-qemu-debuginfo, p-cpe:/a:rocky:linux:ruby-hivex-debuginfo, p-cpe:/a:rocky:linux:libvirt-daemon-driver-storage-logical, p-cpe:/a:rocky:linux:qemu-kvm-tests-debuginfo, p-cpe:/a:rocky:linux:libguestfs-inspect-icons, p-cpe:/a:rocky:linux:libiscsi, p-cpe:/a:rocky:linux:libvirt-admin, p-cpe:/a:rocky:linux:netcf, p-cpe:/a:rocky:linux:libvirt-daemon-driver-storage-disk-debuginfo, p-cpe:/a:rocky:linux:libvirt-libs, p-cpe:/a:rocky:linux:qemu-kvm-core-debuginfo, p-cpe:/a:rocky:linux:python3-hivex-debuginfo, p-cpe:/a:rocky:linux:libvirt-daemon-driver-nodedev-debuginfo, p-cpe:/a:rocky:linux:qemu-kvm-block-rbd-debuginfo, p-cpe:/a:rocky:linux:libguestfs-tools-c, p-cpe:/a:rocky:linux:supermin-debugsource, p-cpe:/a:rocky:linux:nbdfuse-debuginfo, p-cpe:/a:rocky:linux:nbdkit-server-debuginfo, p-cpe:/a:rocky:linux:libvirt-debuginfo, p-cpe:/a:rocky:linux:libnbd-devel, p-cpe:/a:rocky:linux:libguestfs-gobject-debuginfo, p-cpe:/a:rocky:linux:libguestfs-rescue, p-cpe:/a:rocky:linux:libvirt-devel, p-cpe:/a:rocky:linux:nbdfuse, p-cpe:/a:rocky:linux:libguestfs-javadoc, p-cpe:/a:rocky:linux:nbdkit-example-plugins, p-cpe:/a:rocky:linux:nbdkit-curl-plugin-debuginfo, p-cpe:/a:rocky:linux:libguestfs-debugsource, p-cpe:/a:rocky:linux:libvirt-daemon-driver-secret-debuginfo, p-cpe:/a:rocky:linux:libvirt-daemon-config-network, p-cpe:/a:rocky:linux:nbdkit-devel, p-cpe:/a:rocky:linux:libvirt-dbus-debugsource, p-cpe:/a:rocky:linux:libguestfs-gobject-devel, p-cpe:/a:rocky:linux:lua-guestfs, p-cpe:/a:rocky:linux:perl-sys-guestfs-debuginfo, p-cpe:/a:rocky:linux:libguestfs-java-devel, p-cpe:/a:rocky:linux:python3-hivex, p-cpe:/a:rocky:linux:libguestfs-devel, p-cpe:/a:rocky:linux:python3-libvirt, p-cpe:/a:rocky:linux:nbdkit-debugsource, p-cpe:/a:rocky:linux:libvirt-daemon-driver-storage-scsi, p-cpe:/a:rocky:linux:libvirt-daemon-driver-qemu, p-cpe:/a:rocky:linux:ocaml-hivex-debuginfo, p-cpe:/a:rocky:linux:netcf-devel, p-cpe:/a:rocky:linux:python3-libvirt-debuginfo, p-cpe:/a:rocky:linux:python3-libguestfs-debuginfo, p-cpe:/a:rocky:linux:libvirt-daemon-driver-storage-scsi-debuginfo, p-cpe:/a:rocky:linux:libguestfs-winsupport, p-cpe:/a:rocky:linux:libguestfs-debuginfo, p-cpe:/a:rocky:linux:ocaml-libnbd, p-cpe:/a:rocky:linux:qemu-kvm-block-curl-debuginfo, p-cpe:/a:rocky:linux:libvirt-daemon-driver-nwfilter-debuginfo, p-cpe:/a:rocky:linux:qemu-guest-agent-debuginfo, p-cpe:/a:rocky:linux:libguestfs-bash-completion, p-cpe:/a:rocky:linux:libvirt-daemon-driver-storage-core-debuginfo, p-cpe:/a:rocky:linux:libvirt-daemon-driver-interface-debuginfo, p-cpe:/a:rocky:linux:libvirt-dbus, p-cpe:/a:rocky:linux:libnbd, p-cpe:/a:rocky:linux:python3-libnbd-debuginfo, p-cpe:/a:rocky:linux:qemu-kvm-block-gluster-debuginfo, p-cpe:/a:rocky:linux:libvirt-lock-sanlock, p-cpe:/a:rocky:linux:libvirt-daemon-driver-storage-core, p-cpe:/a:rocky:linux:libvirt-daemon-debuginfo, p-cpe:/a:rocky:linux:libguestfs-man-pages-uk, p-cpe:/a:rocky:linux:libguestfs-gobject, p-cpe:/a:rocky:linux:libvirt-daemon-driver-storage-mpath, p-cpe:/a:rocky:linux:sgabios, p-cpe:/a:rocky:linux:libguestfs-gfs2, p-cpe:/a:rocky:linux:nbdkit-gzip-plugin, p-cpe:/a:rocky:linux:hivex-debuginfo, p-cpe:/a:rocky:linux:ocaml-libnbd-devel, p-cpe:/a:rocky:linux:netcf-libs-debuginfo, p-cpe:/a:rocky:linux:hivex-devel, p-cpe:/a:rocky:linux:qemu-kvm-debuginfo, p-cpe:/a:rocky:linux:supermin-devel, p-cpe:/a:rocky:linux:virt-dib, p-cpe:/a:rocky:linux:nbdkit, p-cpe:/a:rocky:linux:qemu-kvm-block-gluster, cpe:/o:rocky:linux:8, p-cpe:/a:rocky:linux:perl-hivex, p-cpe:/a:rocky:linux:perl-sys-virt-debugsource, p-cpe:/a:rocky:linux:python3-libnbd, p-cpe:/a:rocky:linux:libguestfs-xfs, p-cpe:/a:rocky:linux:libvirt-nss-debuginfo, p-cpe:/a:rocky:linux:libguestfs, p-cpe:/a:rocky:linux:libiscsi-debuginfo, p-cpe:/a:rocky:linux:libiscsi-debugsource, p-cpe:/a:rocky:linux:libvirt-daemon-driver-storage-iscsi-debuginfo, p-cpe:/a:rocky:linux:libvirt-daemon-driver-storage-iscsi-direct, p-cpe:/a:rocky:linux:qemu-kvm-common-debuginfo, p-cpe:/a:rocky:linux:netcf-debugsource, p-cpe:/a:rocky:linux:libvirt-bash-completion, p-cpe:/a:rocky:linux:libvirt-libs-debuginfo, p-cpe:/a:rocky:linux:nbdkit-basic-plugins, p-cpe:/a:rocky:linux:libnbd-debuginfo, p-cpe:/a:rocky:linux:libiscsi-utils, p-cpe:/a:rocky:linux:libvirt-daemon-driver-storage-rbd, p-cpe:/a:rocky:linux:nbdkit-ssh-plugin-debuginfo, p-cpe:/a:rocky:linux:qemu-guest-agent, p-cpe:/a:rocky:linux:libvirt-client, p-cpe:/a:rocky:linux:libguestfs-java, p-cpe:/a:rocky:linux:libguestfs-java-debuginfo, p-cpe:/a:rocky:linux:libiscsi-utils-debuginfo, p-cpe:/a:rocky:linux:perl-sys-virt, p-cpe:/a:rocky:linux:qemu-kvm-common, p-cpe:/a:rocky:linux:nbdkit-curl-plugin, p-cpe:/a:rocky:linux:nbdkit-linuxdisk-plugin-debuginfo, p-cpe:/a:rocky:linux:libvirt-daemon-driver-storage-rbd-debuginfo, p-cpe:/a:rocky:linux:lua-guestfs-debuginfo, p-cpe:/a:rocky:linux:perl-sys-guestfs, p-cpe:/a:rocky:linux:netcf-debuginfo, p-cpe:/a:rocky:linux:python3-libguestfs

必需的 KB 项: Host/local_checks_enabled, Host/cpu, Host/RockyLinux/release, Host/RockyLinux/rpm-list

可利用: true

易利用性: Exploits are available

补丁发布日期: 2021/11/9

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