Oracle Linux 8：kvm_utils3 (ELSA-2023-12855)

high Nessus Plugin ID 182741

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-2023-12855 公告中提及的多個弱點影響。

- 在 QEMU 中發現一個缺陷。熱拔出的非同步特性會造成爭用情形，系統會在 virtio-net pci 前端拔除之前清除網路裝置後端。惡意來賓可利用此時間窗口觸發宣告並造成拒絕服務。(CVE-2023-3301)

- 處理 ClientCutText 訊息時，在 QEMU 內建的 VNC 伺服器中發現一個瑕疵。在「inflate_buffer」函式中，對攻擊者控制的 zlib 緩衝區進行擴充時，錯誤的結束條件可能會導致無限迴圈。這可允許能夠傳送剪貼簿至 VNC 伺服器的經驗證遠端用戶端觸發拒絕服務。(CVE-2023-3255)

- 在 libvirt 中發現一個弱點。此安全性缺陷是因為重複查詢 SR-IOV PCI 裝置的功能所導致，該行為會暴露因無法在父項結構的 g_autoptr 清理中釋放 virPCIVirtualFunction 陣列而造成的記憶體洩漏。(CVE-2023-2700)

- 在 QEMU 內建 VNC 伺服器中發現一個瑕疵。當用戶端連線至 VNC 伺服器時，QEMU 會檢查目前的連線數是否超過特定閾值；如果超過特定閾值，QEMU 會清理先前的連線。如果之前的連線剛好處於交握階段並失敗，QEMU 會再次清理連線，進而導致 NULL 指標解除參照問題。利用此問題，未經驗證的遠端用戶端可造成拒絕服務。(CVE-2023-3354)

- 在 libvirt 中發現一個缺陷。virStoragePoolObjListSearch 函式未如預期傳回鎖定的集區，從而在嘗試從其他執行緒鎖定相同物件時，導致發生爭用情形和拒絕服務。此問題讓連線至唯讀通訊端的用戶端可以導致 libvirt 程序損毀。(CVE-2023-3750)

- lsi53c895a 裝置中有一個弱點會影響最新版本的 qemu。DMA-MMIO 重新進入問題可能導致記憶體損毀錯誤，例如堆疊溢位或釋放後使用。(CVE-2023-0330)

- 發現 QEMU 虛擬 crypto 裝置在處理 virtio_crypto_handle_sym_req 中的資料加密/解密要求時存在瑕疵。程式未檢查 virtio_crypto_sym_op_helper 中 `src_len` 和 `dst_len` 的值，而當這兩個值不同時，可能發生堆積緩衝區溢位。
(CVE-2023-3180)

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作出判斷。

解決方案

更新受影響的套件。

另請參閱

https://linux.oracle.com/errata/ELSA-2023-12855.html

Plugin 詳細資訊

嚴重性: High

ID: 182741

檔案名稱: oraclelinux_ELSA-2023-12855.nasl

版本: 1.1

類型: local

代理程式: unix

系列: Oracle Linux Local Security Checks

已發布: 2023/10/7

已更新: 2023/12/18

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

風險資訊

VPR

風險因素: Medium

分數: 4.4

CVSS v2

風險因素: High

基本分數: 7.8

時間分數: 5.8

媒介: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS 評分資料來源: CVE-2023-3354

CVSS v3

風險因素: High

基本分數: 7.5

時間分數: 6.5

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

時間媒介: CVSS:3.0/E:U/RL:O/RC:C

弱點資訊

CPE: p-cpe:/a:oracle:linux:libvirt-daemon-config-nwfilter, p-cpe:/a:oracle:linux:nbdkit-linuxdisk-plugin, p-cpe:/a:oracle:linux:libguestfs-gfs2, p-cpe:/a:oracle:linux:libiscsi-devel, p-cpe:/a:oracle:linux:sgabios-bin, p-cpe:/a:oracle:linux:libguestfs-bash-completion, p-cpe:/a:oracle:linux:qemu-kvm-block-gluster, p-cpe:/a:oracle:linux:ruby-libguestfs, p-cpe:/a:oracle:linux:netcf, p-cpe:/a:oracle:linux:libvirt-lock-sanlock, p-cpe:/a:oracle:linux:libguestfs-rsync, p-cpe:/a:oracle:linux:libguestfs-javadoc, p-cpe:/a:oracle:linux:nbdkit-tar-filter, p-cpe:/a:oracle:linux:virt-dib, p-cpe:/a:oracle:linux:libvirt-nss, p-cpe:/a:oracle:linux:libguestfs-tools-c, p-cpe:/a:oracle:linux:perl-sys-guestfs, cpe:/a:oracle:linux:8::kvm_appstream, p-cpe:/a:oracle:linux:nbdkit-gzip-plugin, p-cpe:/a:oracle:linux:libvirt, p-cpe:/a:oracle:linux:virt-v2v-man-pages-uk, p-cpe:/a:oracle:linux:nbdkit, p-cpe:/a:oracle:linux:qemu-kvm-block-ssh, p-cpe:/a:oracle:linux:libvirt-daemon-driver-storage-rbd, p-cpe:/a:oracle:linux:libvirt-daemon-driver-storage-gluster, p-cpe:/a:oracle:linux:libvirt-libs, p-cpe:/a:oracle:linux:nbdkit-tmpdisk-plugin, p-cpe:/a:oracle:linux:libvirt-daemon-config-network, p-cpe:/a:oracle:linux:libvirt-daemon-driver-qemu, p-cpe:/a:oracle:linux:nbdkit-vddk-plugin, p-cpe:/a:oracle:linux:swtpm-tools-pkcs11, p-cpe:/a:oracle:linux:libiscsi, p-cpe:/a:oracle:linux:libvirt-dbus, p-cpe:/a:oracle:linux:qemu-kvm, p-cpe:/a:oracle:linux:swtpm-devel, p-cpe:/a:oracle:linux:libguestfs-gobject-devel, p-cpe:/a:oracle:linux:hivex-devel, p-cpe:/a:oracle:linux:libguestfs-tools, p-cpe:/a:oracle:linux:qemu-kvm-block-rbd, p-cpe:/a:oracle:linux:libguestfs-devel, p-cpe:/a:oracle:linux:nbdkit-basic-plugins, p-cpe:/a:oracle:linux:python3-libguestfs, p-cpe:/a:oracle:linux:libguestfs-inspect-icons, p-cpe:/a:oracle:linux:libvirt-daemon-driver-storage-disk, p-cpe:/a:oracle:linux:libguestfs-man-pages-uk, p-cpe:/a:oracle:linux:perl-sys-virt, p-cpe:/a:oracle:linux:libvirt-daemon-driver-storage-scsi, p-cpe:/a:oracle:linux:python3-libvirt, p-cpe:/a:oracle:linux:sgabios, p-cpe:/a:oracle:linux:libvirt-daemon-driver-storage-core, p-cpe:/a:oracle:linux:nbdkit-server, p-cpe:/a:oracle:linux:nbdkit-example-plugins, p-cpe:/a:oracle:linux:libvirt-daemon-driver-storage, p-cpe:/a:oracle:linux:qemu-kvm-common, p-cpe:/a:oracle:linux:lua-guestfs, p-cpe:/a:oracle:linux:libvirt-wireshark, p-cpe:/a:oracle:linux:libvirt-daemon-driver-secret, p-cpe:/a:oracle:linux:libvirt-daemon-driver-storage-iscsi, p-cpe:/a:oracle:linux:netcf-libs, p-cpe:/a:oracle:linux:libtpms, p-cpe:/a:oracle:linux:nbdkit-devel, p-cpe:/a:oracle:linux:libvirt-daemon-driver-storage-logical, p-cpe:/a:oracle:linux:libvirt-daemon-driver-storage-iscsi-direct, p-cpe:/a:oracle:linux:qemu-img, p-cpe:/a:oracle:linux:swtpm, p-cpe:/a:oracle:linux:qemu-kvm-block-curl, p-cpe:/a:oracle:linux:qemu-kvm-core, cpe:/o:oracle:linux:8, p-cpe:/a:oracle:linux:perl-hivex, p-cpe:/a:oracle:linux:nbdkit-nbd-plugin, p-cpe:/a:oracle:linux:libvirt-daemon-kvm, p-cpe:/a:oracle:linux:nbdkit-xz-filter, p-cpe:/a:oracle:linux:qemu-guest-agent, p-cpe:/a:oracle:linux:libguestfs-man-pages-ja, p-cpe:/a:oracle:linux:nbdkit-tar-plugin, p-cpe:/a:oracle:linux:nbdkit-bash-completion, p-cpe:/a:oracle:linux:libguestfs-java-devel, p-cpe:/a:oracle:linux:libvirt-daemon-driver-nwfilter, p-cpe:/a:oracle:linux:nbdkit-ssh-plugin, p-cpe:/a:oracle:linux:virt-v2v-bash-completion, p-cpe:/a:oracle:linux:libvirt-docs, p-cpe:/a:oracle:linux:nbdfuse, p-cpe:/a:oracle:linux:virt-v2v-man-pages-ja, p-cpe:/a:oracle:linux:libvirt-daemon-driver-interface, p-cpe:/a:oracle:linux:supermin, p-cpe:/a:oracle:linux:libvirt-client, p-cpe:/a:oracle:linux:libguestfs-xfs, p-cpe:/a:oracle:linux:libvirt-client-qemu, p-cpe:/a:oracle:linux:libnbd-bash-completion, p-cpe:/a:oracle:linux:virt-v2v, p-cpe:/a:oracle:linux:libnbd, p-cpe:/a:oracle:linux:nbdkit-curl-plugin, p-cpe:/a:oracle:linux:libnbd-devel, p-cpe:/a:oracle:linux:libguestfs-rescue, p-cpe:/a:oracle:linux:libtpms-devel, p-cpe:/a:oracle:linux:hivex, p-cpe:/a:oracle:linux:libvirt-daemon-driver-network, p-cpe:/a:oracle:linux:seabios-bin, p-cpe:/a:oracle:linux:nbdkit-gzip-filter, p-cpe:/a:oracle:linux:libguestfs, p-cpe:/a:oracle:linux:libguestfs-gobject, p-cpe:/a:oracle:linux:libvirt-daemon-driver-storage-mpath, p-cpe:/a:oracle:linux:libguestfs-winsupport, p-cpe:/a:oracle:linux:libvirt-daemon-driver-nodedev, p-cpe:/a:oracle:linux:libguestfs-appliance, p-cpe:/a:oracle:linux:nbdkit-python-plugin, p-cpe:/a:oracle:linux:supermin-devel, p-cpe:/a:oracle:linux:seavgabios-bin, p-cpe:/a:oracle:linux:seabios, p-cpe:/a:oracle:linux:libguestfs-java, p-cpe:/a:oracle:linux:libvirt-devel, p-cpe:/a:oracle:linux:netcf-devel, p-cpe:/a:oracle:linux:qemu-virtiofsd, p-cpe:/a:oracle:linux:swtpm-tools, p-cpe:/a:oracle:linux:qemu-kvm-block-iscsi, p-cpe:/a:oracle:linux:swtpm-libs, p-cpe:/a:oracle:linux:python3-hivex, p-cpe:/a:oracle:linux:libvirt-daemon, p-cpe:/a:oracle:linux:nbdkit-basic-filters, p-cpe:/a:oracle:linux:ruby-hivex, p-cpe:/a:oracle:linux:libiscsi-utils, p-cpe:/a:oracle:linux:python3-libnbd

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

可輕鬆利用: No known exploits are available

修補程式發佈日期: 2023/10/7

弱點發布日期: 2023/3/6

參考資訊

CVE: CVE-2023-0330, CVE-2023-2700, CVE-2023-3180, CVE-2023-3255, CVE-2023-3301, CVE-2023-3354, CVE-2023-3750