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云安全日报210906:Debian压缩只读文件系统发现任意文件写入漏洞,需要尽快升级
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简介...
Debian是一个完全自由的稳定且安全的基于Linux的操作系统,其使用范围包括笔记本云安计算机,台式机和服务器。Debian是许多其他发行版(例如:Ubuntu、Knoppix、全日PureOS、SteamOS等)的种子和基础。自1993年以来,它的稳定性和可靠性就深受用户喜爱报2。
9月4日,Debian发布了安全更新,修复了squashfs压缩只读文件系统中发现的任10意文件写入漏洞。以下是漏洞详情:
漏洞详情
来源:https://www.debian.org/se90curity/2021/dsa-4967
CVE-2021-40153 严重程度: 重要
squashf6:s-tools 中的 unsquashfs(用于创建和提取 Squashfs 文件系统的工具)De不会验证文件名以便在目标目录之外进行遍历。如果处理格式错误的 Squashfs 图像,攻击者可bi以利用此缺陷将任意文件写入文件系统。
受影响产品及版本
上述漏洞影响
oldstable Debianan发行版(buster)1:4.3-12+deb10u1之前版本
stable Debian发行版(压缩bullseye)1:4.4-2+deb11u1之前版本
解决方案
oldstable De只读bian发行版(buster)升级1:4.3-12+deb10u1版本
stable Debian文件发行版(bullseye) 升级1:4.4-2+deb11u1版本
查看更多漏洞信息 以及升系统级请访问官网:
https://www.debian.org/lts/security/
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