sharpziplib_project sharpziplib 对路径名的限制不恰当（路径遍历）

CVE编号

CVE-2021-32841

利用情况

暂无

补丁情况

N/A

披露时间

2022-01-27

漏洞描述

SharpZipLib (or #ziplib) is a Zip, GZip, Tar and BZip2 library. Starting version 1.3.0 and prior to version 1.3.3, a check was added if the destination file is under destination directory. However, it is not enforced that `destDir` ends with slash. If the `destDir` is not slash terminated like `/home/user/dir` it is possible to create a file with a name thats begins with the destination directory, i.e. `/home/user/dir.sh`. Because of the file name and destination directory constraints, the arbitrary file creation impact is limited and depends on the use case. Version 1.3.3 contains a patch for this vulnerability.

解决建议

建议您更新当前系统或软件至最新版，完成漏洞的修复。

参考链接
https://github.com/icsharpcode/SharpZipLib/commit/5c3b293de5d65b108e7f2cd0ea8...
https://github.com/icsharpcode/SharpZipLib/releases/tag/v1.3.3
https://securitylab.github.com/advisories/GHSL-2021-125-sharpziplib/

受影响软件情况

#	类型	厂商	产品	版本	影响面
1
	运行在以下环境
	应用	sharpziplib_project	sharpziplib	*	From (including) 1.3.0	Up to (excluding) 1.3.3

CVSS3评分 5.3

• 攻击路径 网络
• 攻击复杂度 低
• 权限要求 无
• 影响范围 未更改
• 用户交互 无
• 可用性 无
• 保密性 无
• 完整性 低

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N CWE-ID 漏洞类型 CWE-22 对路径名的限制不恰当（路径遍历）