SharpCompress is a fully managed C# library to deal with many compression types and formats. Versions prior to 0.29.0 are vulnerable to partial path traversal. SharpCompress recreates a hierarchy of directories under destinationDirectory if ExtractFullPath is set to true in options. In order to prevent extraction outside the destination directory the destinationFileName path is verified to begin with fullDestinationDirectoryPath. However, prior to version 0.29.0, it is not enforced that fullDestinationDirectoryPath ends with slash. If the destinationDirectory is not slash terminated like `/home/user/dir` it is possible to create a file with a name thats begins as the destination directory one level up from the 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. This issue is fixed in SharpCompress version 0.29.0.
References
Link | Resource |
---|---|
https://github.com/adamhathcock/sharpcompress/pull/614 | Patch Third Party Advisory |
https://github.com/adamhathcock/sharpcompress/releases/tag/0.29.0 | Release Notes Third Party Advisory |
https://github.com/adamhathcock/sharpcompress/security/advisories/GHSA-jp7f-grcv-6mjf | Exploit Third Party Advisory |
https://github.com/adamhathcock/sharpcompress/pull/614 | Patch Third Party Advisory |
https://github.com/adamhathcock/sharpcompress/releases/tag/0.29.0 | Release Notes Third Party Advisory |
https://github.com/adamhathcock/sharpcompress/security/advisories/GHSA-jp7f-grcv-6mjf | Exploit Third Party Advisory |
Configurations
History
21 Nov 2024, 06:18
Type | Values Removed | Values Added |
---|---|---|
References | () https://github.com/adamhathcock/sharpcompress/pull/614 - Patch, Third Party Advisory | |
References | () https://github.com/adamhathcock/sharpcompress/releases/tag/0.29.0 - Release Notes, Third Party Advisory | |
References | () https://github.com/adamhathcock/sharpcompress/security/advisories/GHSA-jp7f-grcv-6mjf - Exploit, Third Party Advisory |
Information
Published : 2021-09-16 15:15
Updated : 2024-11-21 06:18
NVD link : CVE-2021-39208
Mitre link : CVE-2021-39208
CVE.ORG link : CVE-2021-39208
JSON object : View
Products Affected
sharpcompress_project
- sharpcompress
CWE
CWE-22
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')