安全公告/【CVE-2021-3999】

基本信息

漏洞描述

A flaw was found in glibc. An off-by-one buffer overflow and underflow in getcwd() may lead to memory corruption when the size of the buffer is exactly 1. A local attacker who can control the input buffer and size passed to getcwd() in a setuid program could use this flaw to potentially execute arbitrary code and escalate their privileges on the system.

漏洞判定

执行命令yum info PackageName获取软件包版本号，版本小于修复版本，则受此漏洞影响，版本大于等于修复版本，则此漏洞已修复

修复方式

yum update PackageName

参考

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3999 https://nvd.nist.gov/vuln/detail/CVE-2021-3999