CVE-2012-0876
medium
CVSS v3
—
CVSS v4 NEW
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VIR risk
4.3
Description
The XML parser (xmlparse.c) in expat before 2.1.0 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via an XML file with many identifiers with the same value.
Predictions
Exploit likelihood
20%
Patch ETA
—
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.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 2.1.0~beta3-1 |
| debian | bullseye | fixed | 2.1.0~beta3-1 |
| debian | forky | fixed | 2.1.0~beta3-1 |
| debian | sid | fixed | 2.1.0~beta3-1 |
| debian | trixie | fixed | 2.1.0~beta3-1 |
| rhel | 5.0 | affected | |
| rhel | 6.0 | affected | |
| rhel | 6.2 | affected | |
| debian | 6.0 | affected | |
| debian | 7.0 | affected | |
| ubuntu | 8.04 | affected | |
| ubuntu | 10.04 | affected | |
| ubuntu | 11.04 | affected | |
| ubuntu | 11.10 | affected | |
| ubuntu | 12.04 | affected | |
References
- https://www.suse.com/security/cve/CVE-2012-0876.html
- http://bugs.python.org/issue13703#msg151870
- http://lists.apple.com/archives/security-announce/2013/Oct/msg00004.html
- http://lists.apple.com/archives/security-announce/2015/Dec/msg00005.html
- http://mail.libexpat.org/pipermail/expat-discuss/2012-March/002768.html
- http://rhn.redhat.com/errata/RHSA-2012-0731.html
- http://rhn.redhat.com/errata/RHSA-2016-0062.html
- http://rhn.redhat.com/errata/RHSA-2016-2957.html
- http://secunia.com/advisories/49504
- http://secunia.com/advisories/51024
- http://secunia.com/advisories/51040
- http://sourceforge.net/projects/expat/files/expat/2.1.0/
- http://sourceforge.net/tracker/?func=detail&atid=110127&aid=3496608&group_id=10127
- http://www.debian.org/security/2012/dsa-2525
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:041
- http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
- http://www.securityfocus.com/bid/52379
- http://www.ubuntu.com/usn/USN-1527-1
- http://www.ubuntu.com/usn/USN-1613-1
- http://www.ubuntu.com/usn/USN-1613-2
- https://kc.mcafee.com/corporate/index?page=content&id=SB10365
- https://support.apple.com/HT205637
- https://www.tenable.com/security/tns-2016-20
- https://security-tracker.debian.org/tracker/CVE-2012-0876
CWEs
CWE-400
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.