Debian DLA-2713-1:linux - LTS 安全更新

high Nessus 插件 ID 151891

简介

远程 Debian 主机上缺少一个或多个与安全性相关的更新。

描述

远程 Debian 9 主机上安装的多个程序包受到 dla-2713 公告中提及的多个漏洞影响。

- 在 5.13.4 之前的 Linux 内核 3.16 至 5.13.x 中,fs/seq_file.c 未正确限制 seq 缓冲区分配,导致整数溢出、越界写入和无特权用户提升至 root 权限,又称为 CID-8cae8cd89f05。(CVE-2021-33909)

- Linux 内核 5.12.10 及之前版本中的 net/can/bcm.c 允许本地用户从内核堆栈内存获取敏感信息,这是部分数据结构未初始化所致。(CVE-2021-34693)

请注意,Nessus 尚未测试此问题,而是只依靠应用程序自我报告的版本号来判断。

解决方案

升级 linux 程序包。

针对 Debian 9 stretch,这些问题已在 4.9.272-2 版本中修复。

另见

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=990072

https://security-tracker.debian.org/tracker/source-package/linux

https://www.debian.org/lts/security/2021/dla-2713

https://security-tracker.debian.org/tracker/CVE-2021-21781

https://security-tracker.debian.org/tracker/CVE-2021-33909

https://security-tracker.debian.org/tracker/CVE-2021-34693

https://security-tracker.debian.org/tracker/CVE-2021-3609

https://packages.debian.org/source/stretch/linux

插件详情

严重性: High

ID: 151891

文件名: debian_DLA-2713.nasl

版本: 1.4

类型: local

代理: unix

发布时间: 2021/7/21

最近更新时间: 2022/1/20

支持的传感器: Agentless Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

风险信息

VPR

风险因素: Critical

分数: 9.0

CVSS v2

风险因素: High

基本分数: 7.2

时间分数: 6.3

矢量: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

CVSS 分数来源: CVE-2021-33909

CVSS v3

风险因素: High

基本分数: 7.8

时间分数: 7.5

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

时间矢量: CVSS:3.0/E:H/RL:O/RC:C

漏洞信息

CPE: p-cpe:/a:debian:debian_linux:linux-image-4.9.0-14-rt-686-pae, p-cpe:/a:debian:debian_linux:linux-compiler-gcc-6-x86, p-cpe:/a:debian:debian_linux:linux-headers-4.9.0-14-all-armhf, p-cpe:/a:debian:debian_linux:linux-headers-4.9.0-14-marvell, p-cpe:/a:debian:debian_linux:libcpupower1, p-cpe:/a:debian:debian_linux:linux-headers-4.9.0-14-rt-686-pae, cpe:/o:debian:debian_linux:9.0, p-cpe:/a:debian:debian_linux:linux-doc-4.9, p-cpe:/a:debian:debian_linux:linux-image-4.9.0-14-rt-amd64-dbg, p-cpe:/a:debian:debian_linux:linux-support-4.9.0-14, p-cpe:/a:debian:debian_linux:linux-image-4.9.0-14-686-pae, p-cpe:/a:debian:debian_linux:linux-manual-4.9, p-cpe:/a:debian:debian_linux:linux-headers-4.9.0-14-common, p-cpe:/a:debian:debian_linux:linux-image-4.9.0-14-arm64, p-cpe:/a:debian:debian_linux:linux-headers-4.9.0-14-amd64, p-cpe:/a:debian:debian_linux:linux-headers-4.9.0-14-arm64, p-cpe:/a:debian:debian_linux:linux-image-4.9.0-14-rt-686-pae-dbg, p-cpe:/a:debian:debian_linux:linux-perf-4.9, p-cpe:/a:debian:debian_linux:linux-headers-4.9.0-14-all-i386, p-cpe:/a:debian:debian_linux:linux-image-4.9.0-14-armmp, p-cpe:/a:debian:debian_linux:linux-image-4.9.0-14-686, p-cpe:/a:debian:debian_linux:linux-image-4.9.0-14-686-pae-dbg, p-cpe:/a:debian:debian_linux:linux-compiler-gcc-6-arm, p-cpe:/a:debian:debian_linux:linux-headers-4.9.0-14-all, p-cpe:/a:debian:debian_linux:linux-image-4.9.0-14-amd64-dbg, p-cpe:/a:debian:debian_linux:libcpupower-dev, p-cpe:/a:debian:debian_linux:linux-image-4.9.0-14-armmp-lpae, p-cpe:/a:debian:debian_linux:linux-headers-4.9.0-14-all-armel, p-cpe:/a:debian:debian_linux:linux-headers-4.9.0-14-armmp-lpae, p-cpe:/a:debian:debian_linux:linux-image-4.9.0-14-686-dbg, p-cpe:/a:debian:debian_linux:linux-headers-4.9.0-14-all-amd64, p-cpe:/a:debian:debian_linux:linux-kbuild-4.9, p-cpe:/a:debian:debian_linux:linux-libc-dev, p-cpe:/a:debian:debian_linux:linux-cpupower, p-cpe:/a:debian:debian_linux:linux-image-4.9.0-14-marvell, p-cpe:/a:debian:debian_linux:linux-headers-4.9.0-14-686-pae, p-cpe:/a:debian:debian_linux:linux-headers-4.9.0-14-common-rt, p-cpe:/a:debian:debian_linux:linux-headers-4.9.0-14-armmp, p-cpe:/a:debian:debian_linux:usbip, p-cpe:/a:debian:debian_linux:linux-image-4.9.0-14-arm64-dbg, p-cpe:/a:debian:debian_linux:linux-image-4.9.0-14-marvell-dbg, p-cpe:/a:debian:debian_linux:linux-source-4.9, p-cpe:/a:debian:debian_linux:hyperv-daemons, p-cpe:/a:debian:debian_linux:linux-headers-4.9.0-14-rt-amd64, p-cpe:/a:debian:debian_linux:linux-image-4.9.0-14-amd64, p-cpe:/a:debian:debian_linux:linux-image-4.9.0-14-armmp-dbg, p-cpe:/a:debian:debian_linux:linux-image-4.9.0-14-rt-amd64, p-cpe:/a:debian:debian_linux:libusbip-dev, p-cpe:/a:debian:debian_linux:linux-image-4.9.0-14-armmp-lpae-dbg, p-cpe:/a:debian:debian_linux:linux-headers-4.9.0-14-all-arm64, p-cpe:/a:debian:debian_linux:linux-headers-4.9.0-14-686

必需的 KB 项: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

可利用: true

易利用性: Exploits are available

补丁发布日期: 2021/7/20

漏洞发布日期: 2021/6/14

参考资料信息

CVE: CVE-2021-21781, CVE-2021-33909, CVE-2021-34693, CVE-2021-3609

IAVA: 2021-A-0350