Oracle Linux 8：virt：ol / 和 / virt-devel: ol (ELSA-2022-7472)

medium Nessus Plugin ID 167524

語系：

概要

遠端 Oracle Linux 主機缺少一個或多個安全性更新。

說明

遠端 Oracle Linux 8 主機中安裝的套件受到 ELSA-2022-7472 公告中提及的多個弱點影響。

- swtpm 是具有通訊端、字元裝置和 Linux CUSE 介面的 libtpms 型 TPM 模擬器。 0.5.3、 0.6.2 和 0.7.1 之前的版本容易發生越界讀取問題。當存取代表 TPM 狀態的位元組陣列時，swtpm 狀態的特製標頭 (其中 blobheader 的 hdrsize 指標具有無效值) 可能會造成超出邊界存取問題。這可能會使 swtpm 當機或阻止其啟動，原因是無法了解當前狀態。使用者應升級至 swtpm v0.5.3、v0.6.2 或 v0.7.1 以接收修補程式。目前尚無已知的因應措施。(CVE-2022-23645)

- 在 QEMU 6.0.0 (含) 以下版本的軟碟機模擬器中發現堆積緩衝區溢位。處理從磁碟機到來賓系統的 DMA 讀取資料傳輸時，可能會在 hw/block/fdc.c 的 fdctrl_transfer_handler() 中發生此問題。有權限的來賓使用者可利用此缺陷損毀主機上的 QEMU 處理程序，進而導致出現 DoS 或可能從主機記憶體洩漏資訊的狀況。(CVE-2021-3507)

- 在 libguestfs 中發現一個弱點。在 get_keys() 函式中計算可能的相符金鑰數最大值時，會發生此問題。不管是由於錯誤或是惡意執行者的行爲，此問題可導致拒絕服務。(CVE-2022-2211)

- 在 libvirt nwfilter 驅動程式中發現一個缺陷。virNWFilterObjListNumOfNWFilters 方法在反覆使用 virNWFilterObj 執行個體之前，無法取得「driver->nwfilters mutex」。沒有任何保護措施可阻止其他執行緒並行修改 driver->nwfilters 物件。此缺陷讓惡意的無權限使用者可透過 libvirt 的 API virConnectNumOfNWFilters 惡意利用此問題，以損毀網路篩選器管理程序 (libvirtd/virtnwfilterd)。(CVE-2022-0897)

請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼。

解決方案

更新受影響的套件。

另請參閱

https://linux.oracle.com/errata/ELSA-2022-7472.html

Plugin 詳細資訊

嚴重性: Medium

ID: 167524

檔案名稱: oraclelinux_ELSA-2022-7472.nasl

版本: 1.3

類型: local

代理程式: unix

系列: Oracle Linux Local Security Checks

已發布: 2022/11/15

已更新: 2023/10/3

支援的感應器: Frictionless Assessment Agent, Nessus Agent, Nessus

風險資訊

VPR

風險因素: Medium

分數: 5.0

CVSS v2

風險因素: Low

基本分數: 3.6

時間分數: 2.8

媒介: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:P

CVSS 評分資料來源: CVE-2021-3507

CVSS v3

風險因素: Medium

基本分數: 6.1

時間分數: 5.5

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

時間媒介: CVSS:3.0/E:P/RL:O/RC:C

弱點資訊

CPE: 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-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:libvirt-wireshark, 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-filter, p-cpe:/a:oracle:linux:nbdkit-gzip-plugin, p-cpe:/a:oracle:linux:nbdkit-linuxdisk-plugin, p-cpe:/a:oracle:linux:nbdkit-nbd-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-tar-filter, p-cpe:/a:oracle:linux:nbdkit-tar-plugin, p-cpe:/a:oracle:linux:nbdkit-tmpdisk-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, 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-appliance, p-cpe:/a:oracle:linux:libguestfs-bash-completion, 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-bash-completion, p-cpe:/a:oracle:linux:libnbd-devel, p-cpe:/a:oracle:linux:libtpms, p-cpe:/a:oracle:linux:libtpms-devel, p-cpe:/a:oracle:linux:libvirt, p-cpe:/a:oracle:linux:libvirt-client, p-cpe:/a:oracle:linux:libvirt-daemon-driver-storage-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-docs, p-cpe:/a:oracle:linux:qemu-kvm-hw-usbredir, p-cpe:/a:oracle:linux:qemu-kvm-tests, p-cpe:/a:oracle:linux:qemu-kvm-ui-opengl, p-cpe:/a:oracle:linux:qemu-kvm-ui-spice, 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:swtpm, p-cpe:/a:oracle:linux:swtpm-devel, p-cpe:/a:oracle:linux:swtpm-libs, p-cpe:/a:oracle:linux:swtpm-tools, p-cpe:/a:oracle:linux:swtpm-tools-pkcs11, p-cpe:/a:oracle:linux:virt-dib, p-cpe:/a:oracle:linux:virt-v2v, p-cpe:/a:oracle:linux:virt-v2v-bash-completion, p-cpe:/a:oracle:linux:virt-v2v-man-pages-ja, p-cpe:/a:oracle:linux:virt-v2v-man-pages-uk

必要的 KB 項目: Host/OracleLinux, Host/RedHat/release, Host/RedHat/rpm-list, Host/local_checks_enabled

可被惡意程式利用: true

可輕鬆利用: Exploits are available

修補程式發佈日期: 2022/11/15

弱點發布日期: 2021/5/6

參考資訊

CVE: CVE-2021-3507, CVE-2022-0897, CVE-2022-2211, CVE-2022-23645