Ubuntu 16.04 LTS:Linux 内核漏洞 (USN-5039-1)

high Nessus 插件 ID 152536
全新!插件严重性现在使用 CVSS v3

计算的插件严重性默认已更新为使用 CVSS v3。没有 CVSS v3 分数的插件将回退到 CVSS v2 来计算严重性。可以在设置下拉列表中切换严重性显示首选项。

简介

远程 Ubuntu 主机缺少安全更新。

描述

远程 Ubuntu 16.04 LTS 主机上安装的程序包受到 USN-5039-1 公告中提及的漏洞的影响。

- 在 net/netfilter/x_tables.c 中发现堆越界写入漏洞,此漏洞影响 Linux v2.6.19-rc1 之后版本。
攻击者可利用此漏洞,通过用户命名空间获取权限或造成 DoS(通过堆内存损坏)(CVE-2021-22555)

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-5039-1

插件详情

严重性: High

ID: 152536

文件名: ubuntu_USN-5039-1.nasl

版本: 1.5

类型: local

代理: unix

发布时间: 2021/8/12

最近更新时间: 2021/10/7

依存关系: ssh_get_info.nasl, linux_alt_patch_detect.nasl

风险信息

CVSS 分数来源: CVE-2021-22555

VPR

风险因素: Critical

分数: 9.6

CVSS v2

风险因素: Medium

基本分数: 4.6

时间分数: 4

矢量: AV:L/AC:L/Au:N/C:P/I:P/A:P

时间矢量: E:H/RL:OF/RC:C

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: E:H/RL:O/RC:C

漏洞信息

CPE: cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:block-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:crypto-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:dasd-extra-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:dasd-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:fat-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:fb-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:firewire-core-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:floppy-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:fs-core-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:fs-secondary-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:input-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:ipmi-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:irda-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:kernel-image-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:kernel-signed-image-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:linux-aws, p-cpe:/a:canonical:ubuntu_linux:linux-aws-cloud-tools-4.4.0-1131, p-cpe:/a:canonical:ubuntu_linux:linux-aws-headers-4.4.0-1131, p-cpe:/a:canonical:ubuntu_linux:linux-aws-tools-4.4.0-1131, p-cpe:/a:canonical:ubuntu_linux:linux-buildinfo-4.4.0-1096-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-buildinfo-4.4.0-1131-aws, p-cpe:/a:canonical:ubuntu_linux:linux-buildinfo-4.4.0-213-generic, p-cpe:/a:canonical:ubuntu_linux:linux-buildinfo-4.4.0-213-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-4.4.0-1096-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-4.4.0-1131-aws, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-4.4.0-213, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-4.4.0-213-generic, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-4.4.0-213-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-lts-utopic, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-generic-lts-vivid, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-generic-lts-wily, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-generic-lts-xenial, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-lowlatency-lts-utopic, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-lowlatency-lts-vivid, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-lowlatency-lts-wily, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-lowlatency-lts-xenial, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-virtual, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-virtual-lts-utopic, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-virtual-lts-vivid, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-virtual-lts-wily, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-virtual-lts-xenial, p-cpe:/a:canonical:ubuntu_linux:linux-crashdump, p-cpe:/a:canonical:ubuntu_linux:linux-generic, p-cpe:/a:canonical:ubuntu_linux:linux-generic-lts-utopic, p-cpe:/a:canonical:ubuntu_linux:linux-generic-lts-vivid, p-cpe:/a:canonical:ubuntu_linux:linux-generic-lts-wily, p-cpe:/a:canonical:ubuntu_linux:linux-generic-lts-xenial, p-cpe:/a:canonical:ubuntu_linux:linux-headers-4.4.0-1096-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-headers-4.4.0-1131-aws, p-cpe:/a:canonical:ubuntu_linux:linux-headers-4.4.0-213, p-cpe:/a:canonical:ubuntu_linux:linux-headers-4.4.0-213-generic, p-cpe:/a:canonical:ubuntu_linux:linux-headers-4.4.0-213-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-headers-aws, p-cpe:/a:canonical:ubuntu_linux:linux-headers-generic, p-cpe:/a:canonical:ubuntu_linux:linux-headers-generic-lts-utopic, p-cpe:/a:canonical:ubuntu_linux:linux-headers-generic-lts-vivid, p-cpe:/a:canonical:ubuntu_linux:linux-headers-generic-lts-wily, p-cpe:/a:canonical:ubuntu_linux:linux-headers-generic-lts-xenial, 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-lts-utopic, p-cpe:/a:canonical:ubuntu_linux:linux-headers-lowlatency-lts-vivid, p-cpe:/a:canonical:ubuntu_linux:linux-headers-lowlatency-lts-wily, p-cpe:/a:canonical:ubuntu_linux:linux-headers-lowlatency-lts-xenial, p-cpe:/a:canonical:ubuntu_linux:linux-headers-virtual, p-cpe:/a:canonical:ubuntu_linux:linux-headers-virtual-lts-utopic, p-cpe:/a:canonical:ubuntu_linux:linux-headers-virtual-lts-vivid, p-cpe:/a:canonical:ubuntu_linux:linux-headers-virtual-lts-wily, p-cpe:/a:canonical:ubuntu_linux:linux-headers-virtual-lts-xenial, p-cpe:/a:canonical:ubuntu_linux:linux-hwe-generic-trusty, p-cpe:/a:canonical:ubuntu_linux:linux-hwe-virtual-trusty, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1096-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1131-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-213-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-213-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-extra-virtual, p-cpe:/a:canonical:ubuntu_linux:linux-image-extra-virtual-lts-utopic, p-cpe:/a:canonical:ubuntu_linux:linux-image-extra-virtual-lts-vivid, p-cpe:/a:canonical:ubuntu_linux:linux-image-extra-virtual-lts-wily, p-cpe:/a:canonical:ubuntu_linux:linux-image-extra-virtual-lts-xenial, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lts-utopic, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lts-vivid, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lts-wily, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lts-xenial, p-cpe:/a:canonical:ubuntu_linux:linux-image-hwe-generic-trusty, p-cpe:/a:canonical:ubuntu_linux:linux-image-hwe-virtual-trusty, 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-lts-utopic, p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency-lts-vivid, p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency-lts-wily, p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency-lts-xenial, p-cpe:/a:canonical:ubuntu_linux:linux-image-unsigned-4.4.0-213-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-unsigned-4.4.0-213-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual, p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual-lts-utopic, p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual-lts-vivid, p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual-lts-wily, p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual-lts-xenial, p-cpe:/a:canonical:ubuntu_linux:linux-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-kvm-cloud-tools-4.4.0-1096, p-cpe:/a:canonical:ubuntu_linux:linux-kvm-headers-4.4.0-1096, p-cpe:/a:canonical:ubuntu_linux:linux-kvm-tools-4.4.0-1096, 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-lts-utopic, p-cpe:/a:canonical:ubuntu_linux:linux-lowlatency-lts-vivid, p-cpe:/a:canonical:ubuntu_linux:linux-lowlatency-lts-wily, p-cpe:/a:canonical:ubuntu_linux:linux-lowlatency-lts-xenial, p-cpe:/a:canonical:ubuntu_linux:linux-modules-4.4.0-1096-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-modules-4.4.0-1131-aws, p-cpe:/a:canonical:ubuntu_linux:linux-modules-4.4.0-213-generic, p-cpe:/a:canonical:ubuntu_linux:linux-modules-4.4.0-213-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-modules-extra-4.4.0-1131-aws, p-cpe:/a:canonical:ubuntu_linux:linux-modules-extra-4.4.0-213-generic, p-cpe:/a:canonical:ubuntu_linux:linux-modules-extra-aws, p-cpe:/a:canonical:ubuntu_linux:linux-signed-generic, p-cpe:/a:canonical:ubuntu_linux:linux-signed-generic-lts-utopic, p-cpe:/a:canonical:ubuntu_linux:linux-signed-generic-lts-vivid, p-cpe:/a:canonical:ubuntu_linux:linux-signed-generic-lts-wily, p-cpe:/a:canonical:ubuntu_linux:linux-signed-generic-lts-xenial, p-cpe:/a:canonical:ubuntu_linux:linux-signed-image-generic, p-cpe:/a:canonical:ubuntu_linux:linux-signed-image-generic-lts-utopic, p-cpe:/a:canonical:ubuntu_linux:linux-signed-image-generic-lts-vivid, p-cpe:/a:canonical:ubuntu_linux:linux-signed-image-generic-lts-wily, p-cpe:/a:canonical:ubuntu_linux:linux-signed-image-generic-lts-xenial, p-cpe:/a:canonical:ubuntu_linux:linux-signed-image-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-signed-image-lowlatency-lts-wily, p-cpe:/a:canonical:ubuntu_linux:linux-signed-image-lowlatency-lts-xenial, p-cpe:/a:canonical:ubuntu_linux:linux-signed-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-signed-lowlatency-lts-wily, p-cpe:/a:canonical:ubuntu_linux:linux-signed-lowlatency-lts-xenial, p-cpe:/a:canonical:ubuntu_linux:linux-source, p-cpe:/a:canonical:ubuntu_linux:linux-source-4.4.0, p-cpe:/a:canonical:ubuntu_linux:linux-tools-4.4.0-1096-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-tools-4.4.0-1131-aws, p-cpe:/a:canonical:ubuntu_linux:linux-tools-4.4.0-213, p-cpe:/a:canonical:ubuntu_linux:linux-tools-4.4.0-213-generic, p-cpe:/a:canonical:ubuntu_linux:linux-tools-4.4.0-213-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-tools-aws, p-cpe:/a:canonical:ubuntu_linux:linux-tools-common, p-cpe:/a:canonical:ubuntu_linux:linux-tools-generic, p-cpe:/a:canonical:ubuntu_linux:linux-tools-generic-lts-utopic, p-cpe:/a:canonical:ubuntu_linux:linux-tools-generic-lts-vivid, p-cpe:/a:canonical:ubuntu_linux:linux-tools-generic-lts-wily, p-cpe:/a:canonical:ubuntu_linux:linux-tools-generic-lts-xenial, 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-lts-utopic, p-cpe:/a:canonical:ubuntu_linux:linux-tools-lowlatency-lts-vivid, p-cpe:/a:canonical:ubuntu_linux:linux-tools-lowlatency-lts-wily, p-cpe:/a:canonical:ubuntu_linux:linux-tools-lowlatency-lts-xenial, p-cpe:/a:canonical:ubuntu_linux:linux-tools-lts-utopic, p-cpe:/a:canonical:ubuntu_linux:linux-tools-virtual, p-cpe:/a:canonical:ubuntu_linux:linux-tools-virtual-lts-utopic, p-cpe:/a:canonical:ubuntu_linux:linux-tools-virtual-lts-vivid, p-cpe:/a:canonical:ubuntu_linux:linux-tools-virtual-lts-wily, p-cpe:/a:canonical:ubuntu_linux:linux-tools-virtual-lts-xenial, p-cpe:/a:canonical:ubuntu_linux:linux-udebs-generic, p-cpe:/a:canonical:ubuntu_linux:linux-virtual, p-cpe:/a:canonical:ubuntu_linux:linux-virtual-lts-utopic, p-cpe:/a:canonical:ubuntu_linux:linux-virtual-lts-vivid, p-cpe:/a:canonical:ubuntu_linux:linux-virtual-lts-wily, p-cpe:/a:canonical:ubuntu_linux:linux-virtual-lts-xenial, p-cpe:/a:canonical:ubuntu_linux:md-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:message-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:mouse-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:multipath-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:nfs-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:nic-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:nic-pcmcia-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:nic-shared-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:nic-usb-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:parport-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:pata-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:pcmcia-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:pcmcia-storage-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:plip-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:ppp-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:sata-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:scsi-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:serial-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:speakup-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:storage-core-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:usb-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:virtio-modules-4.4.0-213-generic-di, p-cpe:/a:canonical:ubuntu_linux:vlan-modules-4.4.0-213-generic-di

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

可利用: true

易利用性: Exploits are available

补丁发布日期: 2021/8/12

漏洞发布日期: 2021/4/20

可利用的方式

Metasploit (Netfilter x_tables Heap OOB Write Privilege Escalation)

参考资料信息

CVE: CVE-2021-22555

USN: 5039-1