Ubuntu 20.04 LTS/21.04:Linux 核心弱點 (USN-5113-1)

high Nessus Plugin ID 154241
新推出!Plugin 嚴重性目前使用 CVSS v3

計算 Plugin 嚴重性已更新為預設使用 CVSS v3 沒有 CVSS v3 評分的 Plugin 會回歸到以 CVSS v2 計算嚴重性。您可在設定下拉式選單中切換顯示嚴重性的喜好設定

Synopsis

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 / 21.04 主機上安裝的多個套件受到 USN-5113-1 公告中所提及的多個弱點影響。

- 未明確時間和特製的流量可造成 WLAN 裝置發生內部錯誤,導致第 2 層 Wi-Fi 加密不當,進而可能因 Snapdragon Auto、Snapdragon Compute、Snapdragon Connectivity、Snapdragon Consumer IOT、Snapdragon Industrial IOT、Snapdragon Mobile、Snapdragon Voice & Music、Snapdragon Wearables、Snapdragon Wired Infrastructure 和網路中 APQ8053、IPQ4019、IPQ8064、MSM8909W、MSM8996AU、QCA9531、QCN5502、QCS405、SDX20、SM6150、SM7150 中的離散流量設定而造成資訊洩漏 (CVE-2020-3702)

- 在 5.13.8 及更早版本的 Linux 核心的 kernel/bpf/hashtab.c 中 ,當很多元素置放於單個儲桶中時,其中會存在一個整數溢出和超出邊界寫入。注意:如果沒有 CAP_SYS_ADMIN 功能,惡意利用可能無法實現。(CVE-2021-38166)

- 在 Linux 核心 5.13.13 以及之前的所有版本中, 在 ext4 子系統中 fs/ext4/inline.c 的 ext4_write_inline_data_end 中發現爭用情形。(CVE-2021-40490)

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。

解決方案

更新受影響的套件。

另請參閱

https://ubuntu.com/security/notices/USN-5113-1

Plugin 詳細資訊

嚴重性: High

ID: 154241

檔案名稱: ubuntu_USN-5113-1.nasl

版本: 1.4

類型: local

代理程式: unix

已發布: 2021/10/20

已更新: 2022/1/10

相依性: ssh_get_info.nasl, linux_alt_patch_detect.nasl

風險資訊

CVSS 評分資料來源: CVE-2021-42008

VPR

風險因素: Critical

分數: 9

CVSS v2

風險因素: Medium

基本分數: 6.9

時間分數: 5.1

媒介: CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C

時間媒介: CVSS2#E:U/RL:OF/RC:C

CVSS v3

風險因素: High

基本分數: 7.8

時間分數: 6.8

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:U/RL:O/RC:C

弱點資訊

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

可輕鬆利用: No known exploits are available

修補程式發佈日期: 2021/10/19

弱點發布日期: 2020/9/8

參考資訊

CVE: CVE-2020-3702, CVE-2021-38166, CVE-2021-40490, CVE-2021-3732, CVE-2021-3739, CVE-2021-3743, CVE-2021-3753, CVE-2021-42008

USN: 5113-1