All versions of archiver allow attacker to perform a Zip Slip attack via the "unarchive" functions. It is exploited using a specially crafted zip archive, that holds path traversal filenames. When exploited, a filename in a malicious archive is concatenated to the target extraction directory, which results in the final path ending up outside of the target folder. For instance, a zip may hold a file with a "../../file.exe" location and thus break out of the target folder. If an executable or a configuration file is overwritten with a file containing malicious code, the problem can turn into an arbitrary code execution issue quite easily.
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
| Link | Tags |
|---|---|
| https://snyk.io/research/zip-slip-vulnerability | third party advisory |
| https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMMHOLTARCHIVERCMDARC-174728%2C | broken link |
| https://github.com/mholt/archiver/pull/169 | issue tracking |
| https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMMHOLTARCHIVERCMDARC-174728 | exploit third party advisory |