CVE-2009-5029
Description
Integer overflow in the __tzfile_read function in glibc before 2.15 allows context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted timezone (TZ) file, as demonstrated using vsftpd.
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.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
GNU glibc - Timezone Parsing Remote Integer Overflow
OS impact
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 2.13-24 |
| sid | Fixed | 2.13-24 |
| forky | Fixed | 2.13-24 |
| bullseye | Fixed | 2.13-24 |
| bookworm | Fixed | 2.13-24 |
References
- http://dividead.wordpress.com/2009/06/01/glibc-timezone-integer-overflow/
- http://lists.grok.org.uk/pipermail/full-disclosure/2011-December/084452.html
- http://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=97ac2654b2d831acaa18a2b018b0736245903fd2
- http://sourceware.org/ml/libc-alpha/2011-12/msg00037.html
- https://bugzilla.redhat.com/show_bug.cgi?id=761245
- https://security-tracker.debian.org/tracker/CVE-2009-5029
CWEs
CWE-189
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.