Ubuntu 18.04 LTS / 20.04 LTS：Linux 内核漏洞 (USN-5116-1)

high Nessus 插件 ID 154278

语言：

简介

远程 Ubuntu 主机缺少一个或多个安全更新。

描述

远程 Ubuntu 18.04 LTS/20.04 LTS 主机上安装的程序包受到 USN-5116-1 公告中提及的多个漏洞的影响。

 - 在 5.13.13 之前版本的 Linux 内核中，drivers/net/hamradio/6pack.c 中的 decode_data 函数存在 slab 越界写入漏洞。具有 CAP_NET_ADMIN 功能的进程提供的输入可能导致 root 访问。
 (CVE-2021-42008)

 - 在 APQ8053、IPQ4019、IPQ8064、MSM8909W、MSM8996AU、QCA9531、QCN5502、QCS405、SDX20、SM6150、SM7150 中，使用特别定时和手动构建的流量可在 WLAN 设备中造成内部错误，导致第 2 层 Wi-Fi 加密不当，从而可能导致 Snapdragon Auto、Snapdragon Compute、Snapdragon Connectivity、Snapdragon Consumer IOT、Snapdragon Industrial IOT、Snapdragon Mobile、Snapdragon Voice & Music、Snapdragon Wearables 和 Snapdragon Wired Infrastructure and Networking 中一组离散流量的信息在传送中泄漏 (CVE-2020-3702)

 - 在 5.12.11 之前的 Linux 内核版本中，arch/x86/kvm/mmu/paging_tmpl.h 错误地计算了影子分页的访问权限，导致缺少客户机保护页面错误。 (CVE-2021-38198)

 - 在 5.13.3 之前版本的 Linux 内核中，drivers/net/ethernet/xilinx/xilinx_emaclite.c 使攻击者更容易破解 ASLR 保护机制，这是因为它会打印内核指针（即真正的 IOMEM 指针）。(CVE-2021-38205)

 - 在 Linux 内核 5.13.13 及之前版本的 ext4 子系统中，在 fs/ext4/inline.c 中的 ext4_write_inline_data_end 中发现一个争用条件 。(CVE-2021-40490)

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

更新受影响的程序包。

另见

https://ubuntu.com/security/notices/USN-5116-1

插件详情

严重性: High

ID: 154278

文件名: ubuntu_USN-5116-1.nasl

版本: 1.5

类型: local

代理: unix

发布时间: 2021/10/20

最近更新时间: 2023/1/17

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

风险信息

VPR

风险因素: Medium

分数: 6.7

CVSS v2

风险因素: Medium

基本分数: 6.9

时间分数: 5.1

矢量: CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C

时间矢量: CVSS2#E:U/RL:OF/RC:C

CVSS 分数来源: CVE-2021-42008

CVSS v3

风险因素: High

基本分数: 7.8

时间分数: 6.8

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:U/RL:O/RC:C

漏洞信息

CPE: cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-bluefield, p-cpe:/a:canonical:ubuntu_linux:linux-bluefield-headers-5.4.0-1020, p-cpe:/a:canonical:ubuntu_linux:linux-bluefield-tools-5.4.0-1020, p-cpe:/a:canonical:ubuntu_linux:linux-buildinfo-5.4.0-1020-bluefield, p-cpe:/a:canonical:ubuntu_linux:linux-buildinfo-5.4.0-1048-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-buildinfo-5.4.0-1055-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-buildinfo-5.4.0-89-generic, p-cpe:/a:canonical:ubuntu_linux:linux-buildinfo-5.4.0-89-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-buildinfo-5.4.0-89-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-5.4.0-89, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-5.4.0-89-generic, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-5.4.0-89-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-common, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-generic, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-generic-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-generic-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-lowlatency-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-lowlatency-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-virtual, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-virtual-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-virtual-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-crashdump, p-cpe:/a:canonical:ubuntu_linux:linux-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-gcp-5.4-headers-5.4.0-1055, p-cpe:/a:canonical:ubuntu_linux:linux-gcp-5.4-tools-5.4.0-1055, p-cpe:/a:canonical:ubuntu_linux:linux-headers-generic, p-cpe:/a:canonical:ubuntu_linux:linux-gcp-edge, p-cpe:/a:canonical:ubuntu_linux:linux-headers-generic-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-headers-generic-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-generic, p-cpe:/a:canonical:ubuntu_linux:linux-headers-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-generic-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-headers-generic-lpae-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-headers-generic-lpae-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-headers-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-headers-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-headers-lowlatency-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-generic-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-headers-lowlatency-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-headers-oem, p-cpe:/a:canonical:ubuntu_linux:linux-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-headers-oem-osp1, p-cpe:/a:canonical:ubuntu_linux:linux-generic-lpae-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-headers-snapdragon-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-headers-snapdragon-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-headers-virtual, p-cpe:/a:canonical:ubuntu_linux:linux-headers-virtual-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-headers-virtual-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-generic-lpae-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-hwe-5.4-cloud-tools-5.4.0-89, p-cpe:/a:canonical:ubuntu_linux:linux-hwe-5.4-cloud-tools-common, p-cpe:/a:canonical:ubuntu_linux:linux-headers-5.4.0-1020-bluefield, p-cpe:/a:canonical:ubuntu_linux:linux-hwe-5.4-headers-5.4.0-89, p-cpe:/a:canonical:ubuntu_linux:linux-hwe-5.4-source-5.4.0, p-cpe:/a:canonical:ubuntu_linux:linux-headers-5.4.0-1048-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-hwe-5.4-tools-5.4.0-89, p-cpe:/a:canonical:ubuntu_linux:linux-hwe-5.4-tools-common, p-cpe:/a:canonical:ubuntu_linux:linux-headers-5.4.0-1055-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1020-bluefield, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1048-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-headers-5.4.0-89, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1055-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-headers-5.4.0-89-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-89-generic, p-cpe:/a:canonical:ubuntu_linux:linux-headers-5.4.0-89-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-headers-5.4.0-89-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-headers-bluefield, p-cpe:/a:canonical:ubuntu_linux:linux-headers-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-headers-gcp-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-extra-virtual-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-extra-virtual-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-gcp-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lpae-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lpae-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-oem, p-cpe:/a:canonical:ubuntu_linux:linux-image-oem-osp1, p-cpe:/a:canonical:ubuntu_linux:linux-image-snapdragon-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-snapdragon-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-unsigned-5.4.0-1020-bluefield, p-cpe:/a:canonical:ubuntu_linux:linux-image-unsigned-5.4.0-1048-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-unsigned-5.4.0-1055-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-unsigned-5.4.0-89-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-unsigned-5.4.0-89-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual, p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-kvm-headers-5.4.0-1048, p-cpe:/a:canonical:ubuntu_linux:linux-kvm-tools-5.4.0-1048, p-cpe:/a:canonical:ubuntu_linux:linux-libc-dev, p-cpe:/a:canonical:ubuntu_linux:linux-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-lowlatency-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-lowlatency-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-modules-5.4.0-1020-bluefield, p-cpe:/a:canonical:ubuntu_linux:linux-modules-5.4.0-1048-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-modules-5.4.0-1055-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-modules-5.4.0-89-generic, p-cpe:/a:canonical:ubuntu_linux:linux-modules-5.4.0-89-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-modules-5.4.0-89-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-modules-extra-5.4.0-1055-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-modules-extra-5.4.0-89-generic, p-cpe:/a:canonical:ubuntu_linux:linux-modules-extra-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-modules-extra-gcp-edge, p-cpe:/a:canonical:ubuntu_linux:linux-modules-extra-virtual-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-modules-extra-virtual-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-oem, p-cpe:/a:canonical:ubuntu_linux:linux-oem-osp1, p-cpe:/a:canonical:ubuntu_linux:linux-oem-osp1-tools-host, p-cpe:/a:canonical:ubuntu_linux:linux-oem-tools-host, p-cpe:/a:canonical:ubuntu_linux:linux-snapdragon-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-snapdragon-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-source, p-cpe:/a:canonical:ubuntu_linux:linux-source-5.4.0, p-cpe:/a:canonical:ubuntu_linux:linux-tools-5.4.0-1020-bluefield, p-cpe:/a:canonical:ubuntu_linux:linux-tools-5.4.0-1048-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-tools-5.4.0-1055-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-tools-5.4.0-89, p-cpe:/a:canonical:ubuntu_linux:linux-tools-5.4.0-89-generic, p-cpe:/a:canonical:ubuntu_linux:linux-tools-5.4.0-89-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-tools-5.4.0-89-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-tools-bluefield, p-cpe:/a:canonical:ubuntu_linux:linux-tools-common, p-cpe:/a:canonical:ubuntu_linux:linux-tools-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-tools-gcp-edge, p-cpe:/a:canonical:ubuntu_linux:linux-tools-generic, p-cpe:/a:canonical:ubuntu_linux:linux-tools-generic-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-tools-generic-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-tools-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-tools-generic-lpae-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-tools-generic-lpae-hwe-18.04-edge, 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-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-tools-lowlatency-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-tools-oem, p-cpe:/a:canonical:ubuntu_linux:linux-tools-oem-osp1, p-cpe:/a:canonical:ubuntu_linux:linux-tools-snapdragon-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-tools-snapdragon-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-tools-virtual, p-cpe:/a:canonical:ubuntu_linux:linux-tools-virtual-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-tools-virtual-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-virtual, p-cpe:/a:canonical:ubuntu_linux:linux-virtual-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-virtual-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-89-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-89-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-bluefield, p-cpe:/a:canonical:ubuntu_linux:linux-image-extra-virtual

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

易利用性: No known exploits are available

补丁发布日期: 2021/10/20

漏洞发布日期: 2020/9/8

参考资料信息

CVE: CVE-2020-3702, CVE-2021-3732, CVE-2021-38198, CVE-2021-38205, CVE-2021-40490, CVE-2021-42008

USN: 5116-1