CVE-2012-0876

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Summary

CVECVE-2012-0876
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2012-07-03 19:55:02 UTC
Updated2026-04-29 01:13:23 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v2.0 4.3 from [email protected]

AV:N/AC:M/Au:N/C:N/I:N/A:P

Problem Types: CWE-400 | n/a

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial

AV:N/AC:M/Au:N/C:N/I:N/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Libexpat Project Libexpat All All All All
Application Python Python All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
USN-1613-2: Python 2.4 vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com Third Party Advisory
About the security content of OS X El Capitan 10.11.2, Security Update 2015-005 Yosemite, and Security Update 2015-008 Mavericks - Apple Support af854a3a-2127-422b-91ae-364da2661108 support.apple.com Third Party Advisory
[Expat-discuss] Announcement: Expat 2.1.0 Beta can be tested af854a3a-2127-422b-91ae-364da2661108 mail.libexpat.org Broken Link
Security Alerts - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Not Applicable
Security Bulletin - Policy Auditor update fixes multiple vulnerabilities in third-party libraries (CVE-2016-0718, CVE-2016-4472, CVE-2016-5300, CVE-2017-17740, CVE-2017-9287, CVE-2019-13057, CVE-2020-15719, CVE-2019-1543, CVE-2019-1547, CVE-2019-1552, CVE-2019-1563, CVE-2019-8457, CVE-2018-20506, CVE-2018-20346, CVE-2019-16168, CVE-2017-12627) af854a3a-2127-422b-91ae-364da2661108 kc.mcafee.com Broken Link
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 rhn.redhat.com Third Party Advisory
Support / Security / Advisories / / MDVSA-2012:041 | Mandriva af854a3a-2127-422b-91ae-364da2661108 www.mandriva.com Broken Link
USN-1613-1: Python 2.5 vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com Third Party Advisory
Expat XML Parser / Bugs / #496 CVE-2012-0876 - Hash DOS attack af854a3a-2127-422b-91ae-364da2661108 sourceforge.net Third Party Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 rhn.redhat.com Third Party Advisory
Security Advisory SA51024 - Ubuntu update for python2.5 - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Not Applicable
Security Advisory SA51040 - Ubuntu update for python2.4 - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Not Applicable
Expat XML Parsing Multiple Remote Denial of Service Vulnerabilities af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
Debian -- Security Information -- DSA-2525-1 expat af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
APPLE-SA-2013-10-22-3 OS X Mavericks v10.9 af854a3a-2127-422b-91ae-364da2661108 lists.apple.com Broken Link, Mailing List
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 rhn.redhat.com Third Party Advisory
USN-1527-1: Expat vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com Third Party Advisory
Oracle Solaris Bulletin - July 2016 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Third Party Advisory
Expat XML Parser - Browse /expat/2.1.0 at SourceForge.net af854a3a-2127-422b-91ae-364da2661108 sourceforge.net Release Notes, Third Party Advisory
[R2] PVS 5.2.0 Fixes Multiple Third-party Library Vulnerabilities - Security Advisory | Tenable Network Security af854a3a-2127-422b-91ae-364da2661108 www.tenable.com Third Party Advisory
Issue 13703: Hash collision security issue - Python tracker af854a3a-2127-422b-91ae-364da2661108 bugs.python.org Issue Tracking, Third Party Advisory
APPLE-SA-2015-12-08-3 OS X El Capitan 10.11.2 and Security Update 2015-008 af854a3a-2127-422b-91ae-364da2661108 lists.apple.com Broken Link, Mailing List
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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