Advisories for Golang/Github.com/Mholt/Archiver/Cmd/Arc package

2021

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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 …