Don't allow hardlinks to overwrite existing files#156
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matthiaskrgr
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"cargo audit" was showing a vulnerability in tar 0.4.15, this updates to tar v0.4.16. error: Vulnerable crates found! ID: RUSTSEC-2018-0002 Crate: tar Version: 0.4.15 Date: 2018-06-29 URL: composefs/tar-rs#156 Title: Links in archives can overwrite any existing file Solution: upgrade to: >= 0.4.16 error: 1 vulnerability found!
matthiasbeyer
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Apr 20, 2021
See:
https://rustsec.org/advisories/RUSTSEC-2018-0002.html
composefs/tar-rs#156
Signed-off-by: Matthias Beyer <matthias.beyer@atos.net>
matthiasbeyer
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Apr 20, 2021
See:
https://rustsec.org/advisories/RUSTSEC-2018-0002.html
composefs/tar-rs#156
Signed-off-by: Matthias Beyer <matthias.beyer@atos.net>
(cherry picked from commit c75d620)
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This crate tries to provide the guarantee that
unpack_inwon't actually overwrite any files outside of the provided directory. Unfortunately though there's a hole in this logic where a hard link can be used to overwrite an arbitrary file on the filesystem.This commit fixes this issue by using the preexisting logic for extracting paths outside the destination (including symlinks) to validate the link destination of a hard link.