Ubuntu 20.04 LTS/21.10：Linux 核心弱點 (USN-5317-1)

high Nessus Plugin ID 158731

語系：

概要

遠端 Ubuntu 主機缺少一個或多個安全性更新。

描述

遠端 Ubuntu 20.04 LTS / 21.10 主機上安裝的多個套件受到 USN-5317-1 公告中所提及的多個弱點影響。

 - 發現在 Linux 核心的 copy_page_to_iter_pipe 和 push_pipe 函式中，新管道緩衝區結構的旗標成員缺少適當初始化，因此可能包含過時值。無權限的本機使用者可利用此缺陷，在唯讀檔案支援的頁面快取中寫入頁面，並因此提升其在系統上的權限。(CVE-2022-0847)

 - 在某些 Intel(R) 處理器的內容之間不透明地共用分支預測器選取器，可能允許授權使用者透過本地存取實現資訊披露。(CVE-2022-0001)

 - 在某些 Intel(R) 處理器的內容中不透明地共用分支預測器，可能允許授權使用者透過本地存取實現資訊披露。(CVE-2022-0002)

 - 在 2022 年 3 月 8 日之前發布的 Arm Cortex 和 Neoverse 處理器不會正確限制快取推測，即 Spectre-BHB。攻擊者可利用分支歷程記錄緩衝區 (BHB) 中的共用分支歷程記錄來影響預測錯誤的分支。之後，攻擊者可能透過快取配置取得敏感資訊。(CVE-2022-23960)

 - Linux 核心 5.4 版至 5.6.10 版中的 net/netfilter/nf_dup_netdev.c 允許本機使用者利用堆積超出邊界寫入弱點取得權限。這與 nf_tables_offload 有關。(CVE-2022-25636)

請注意，Nessus 並未測試此問題，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://ubuntu.com/security/notices/USN-5317-1

Plugin 詳細資訊

嚴重性: High

ID: 158731

檔案名稱: ubuntu_USN-5317-1.nasl

版本: 1.11

類型: local

代理程式: unix

發布日期: 2022/3/9

更新日期: 2023/1/17

支援的感應器: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent

風險資訊

VPR

風險因素: Critical

分數: 9.8

CVSS v2

風險因素: High

基本分數: 7.2

時間分數: 6.3

媒介: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

時間媒介: CVSS2#E:H/RL:OF/RC:C

CVSS 評分資料來源: CVE-2022-0847

CVSS v3

風險因素: High

基本分數: 7.8

時間分數: 7.5

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

時間媒介: CVSS:3.0/E:H/RL:O/RC:C

CVSS 評分資料來源: CVE-2022-25636

弱點資訊

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p-cpe:/a:canonical:ubuntu_linux:linux-tools-5.13.0-1017-aws, p-cpe:/a:canonical:ubuntu_linux:linux-tools-5.13.0-1017-azure, p-cpe:/a:canonical:ubuntu_linux:linux-tools-5.13.0-1019-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-tools-5.13.0-1020-raspi, p-cpe:/a:canonical:ubuntu_linux:linux-tools-5.13.0-1020-raspi-nolpae, p-cpe:/a:canonical:ubuntu_linux:linux-tools-5.13.0-1021-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-tools-5.13.0-35, p-cpe:/a:canonical:ubuntu_linux:linux-tools-5.13.0-35-generic, p-cpe:/a:canonical:ubuntu_linux:linux-tools-5.13.0-35-generic-64k, p-cpe:/a:canonical:ubuntu_linux:linux-tools-5.13.0-35-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-tools-5.13.0-35-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-tools-5.14.0-1027-oem, p-cpe:/a:canonical:ubuntu_linux:linux-tools-aws, p-cpe:/a:canonical:ubuntu_linux:linux-tools-aws-edge, p-cpe:/a:canonical:ubuntu_linux:linux-tools-azure, p-cpe:/a:canonical:ubuntu_linux:linux-tools-azure-edge, p-cpe:/a:canonical:ubuntu_linux:linux-tools-common, p-cpe:/a:canonical:ubuntu_linux:linux-tools-gcedge, p-cpe:/a:canonical:ubuntu_linux:linux-tools-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-tools-generic, p-cpe:/a:canonical:ubuntu_linux:linux-tools-generic-64k, p-cpe:/a:canonical:ubuntu_linux:linux-tools-generic-64k-hwe-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-tools-generic-64k-hwe-20.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-tools-generic-hwe-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-tools-generic-hwe-20.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-tools-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-tools-generic-lpae-hwe-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-tools-generic-lpae-hwe-20.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-tools-gke, p-cpe:/a:canonical:ubuntu_linux:linux-tools-host, p-cpe:/a:canonical:ubuntu_linux:linux-tools-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-tools-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-tools-lowlatency-hwe-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-tools-lowlatency-hwe-20.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-tools-oem-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-tools-oem-20.04b, p-cpe:/a:canonical:ubuntu_linux:linux-tools-oem-20.04c, p-cpe:/a:canonical:ubuntu_linux:linux-tools-oem-20.04d, p-cpe:/a:canonical:ubuntu_linux:linux-tools-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-tools-oracle-edge, p-cpe:/a:canonical:ubuntu_linux:linux-tools-raspi, p-cpe:/a:canonical:ubuntu_linux:linux-tools-raspi-nolpae, p-cpe:/a:canonical:ubuntu_linux:linux-tools-virtual, p-cpe:/a:canonical:ubuntu_linux:linux-tools-virtual-hwe-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-tools-virtual-hwe-20.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-virtual, p-cpe:/a:canonical:ubuntu_linux:linux-virtual-hwe-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-modules-5.13.0-1020-raspi, p-cpe:/a:canonical:ubuntu_linux:linux-modules-5.13.0-1020-raspi-nolpae, p-cpe:/a:canonical:ubuntu_linux:linux-modules-5.13.0-1021-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-virtual-hwe-20.04-edge, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:21.10

必要的 KB 項目: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

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: 2022/3/9

弱點發布日期: 2022/2/24

CISA 已知利用日期: 2022/5/16

惡意利用途徑

CANVAS (CANVAS)

Core Impact

Metasploit (Dirty Pipe Local Privilege Escalation via CVE-2022-0847)

參考資訊

CVE: CVE-2022-0001, CVE-2022-0002, CVE-2022-0847, CVE-2022-23960, CVE-2022-25636

USN: 5317-1