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CVE-2021-40153

Quick assessment

Affected
n/a n/a
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

squashfs-tools是一个开源软件包。 Squashfs-Tools 4.5版本存在安全漏洞，该漏洞源于在软件中的unsquash-1.c中的squashfs_opendir函数负责存储目录条目中的文件名，然后unsquashfs使用它在unsquash期间创建新文件。函数文件名操作对于目标目录外的遍历并不进行验证，因此文件名被允许写入到目标目录外的位置。

AI Predicted 7.5 Difficulty: Trivial EPSS 2.50% · P85
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I. Basic Information for CVE-2021-40153

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
squashfs_opendir in unsquash-1.c in Squashfs-Tools 4.5 stores the filename in the directory entry; this is then used by unsquashfs to create the new file during the unsquash. The filename is not validated for traversal outside of the destination directory, and thus allows writing to locations outside of the destination.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
squashfs-tools 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
squashfs-tools是一个开源软件包。 Squashfs-Tools 4.5版本存在安全漏洞，该漏洞源于在软件中的unsquash-1.c中的squashfs_opendir函数负责存储目录条目中的文件名，然后unsquashfs使用它在unsquash期间创建新文件。函数文件名操作对于目标目录外的遍历并不进行验证，因此文件名被允许写入到目标目录外的位置。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- n/a n/a -

II. Public POCs for CVE-2021-40153

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III. Intelligence Information for CVE-2021-40153

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Patches & Fixes for CVE-2021-40153 (1)

Vendor Advisories for CVE-2021-40153 (2)

Mailing List Discussions for CVE-2021-40153 (3)

Other References for CVE-2021-40153 (2)

Same Patch Batch · n/a · 2021-08-27 · 17 CVEs total

CVE-2021-40142 7.5 HIGH Local Discovery Server 缓冲区错误漏洞
CVE-2021-23434 5.6 MEDIUM Prototype Pollution
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CVE-2020-18114 Desdev DedeCMS 代码问题漏洞
CVE-2020-18106 WMS SQL注入漏洞
CVE-2021-28233 ok-file-formats 缓冲区错误漏洞
CVE-2020-19002 Mezzanine 跨站脚本漏洞
CVE-2020-19000 Simiki 跨站脚本漏洞
CVE-2020-19001 Github Simiki 命令注入漏洞
CVE-2020-18999 Blog_mini 跨站脚本漏洞
CVE-2020-18998 Blog_mini 跨站脚本漏洞
CVE-2021-3264 Cxuucms SQL注入漏洞
CVE-2021-36530 ngiflib 缓冲区错误漏洞
CVE-2021-36531 ngiflib 缓冲区错误漏洞
CVE-2021-35342 useradm 代码问题漏洞
CVE-2020-23226 Cacti 跨站脚本漏洞

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a