Tag: sudo漏洞修复方法

Linux Sudo本地提权漏洞修复办法（CVE-2021-3156）

Jan 27, 2021

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漏洞详情的国外地址： https://blog.qualys.com/vulnerabilities-research/2021/01/26/cve-2021-3156-heap-based-buffer-overflow-in-sudo-baron-samedit 腾讯云警告地址： https://cloud.tencent.com/announce/detail/1501 按照文档说明，需要升级到Sudo 1.9.5p2 或更新版本即可。所以先到官网sudo.ws下载最新包升级即可。下拉找到rpm包以下为快速修复方法，以centos操作系统为例，升级rpm包。 Centos6: rpm -Uvh https://www.moneyslow.com/soft/CVE-2021-3156/sudo-1.9.5-3.el6.x86_64.rpm Centos7: rpm -Uvh https://www.moneyslow.com/soft/CVE-2021-3156/sudo-1.9.5-3.el7.x86_64.rpm Centos8: rpm -Uvh https://www.moneyslow.com/soft/CVE-2021-3156/sudo-1.9.5-3.el8.x86_64.rpm 例子：Centos7的升级命令： # rpm -Uvh https://www.moneyslow.com/soft/CVE-2021-3156/sudo-1.9.5-3.el7.x86_64.rpm Retrieving https://www.moneyslow.com/soft/CVE-2021-3156/sudo-1.9.5-3.el7.x86_64.rpm Preparing… ################################# [100%] Updating / installing… 1:sudo-1.9.5-3.el7 ################################# [ 50%] Cleaning up / removing… 2:sudo-1.8.23-9.el7 ################################# [100%] 按照文档，出现以下错误，即修复。 $sudoedit -s / usage: sudoedit [-AknS] [-r role] [-t…