CVE-2012-0876

Home/CVE/The XML parser (xmlparse.c) in expat before 2.1.0 computes hash values without restricting the ability to trigger hash c

CVE

The XML parser (xmlparse.c) in expat before 2.1.0 computes hash values without restricting the ability to trigger hash c

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.

MEDIUM · CVSS 4.3 EPSS 0.00166

Monitor

No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence

Sigma rules16 YARA rules0

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Weakness Classification

CWE-400Uncontrolled Resource Consumption

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Affected Products & Versions

libexpat project libexpat< 2.1.0
python>= 2.6.0 and < 2.6.8
python>= 2.7.0 and < 2.7.3
python>= 3.1.0 and < 3.1.5
python>= 3.2.0 and < 3.2.3
debian linuxall versions
canonical ubuntu linuxall versions
oracle solarisall versions
Show all 14 affected productsredhat storageall versions
redhat enterprise linux desktopall versions
redhat enterprise linux eusall versions
redhat enterprise linux serverall versions
redhat enterprise linux server ausall versions
redhat enterprise linux workstationall versions

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Sigma Hunt Rules

Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.

producthighPython Reverse Shell Execution Via PTY And Socket Modules

producthighInline Python Execution - Spawn Shell Via OS System Library

producthighPython One-Liners with Base64 Decoding - Linux

producthighPython Function Execution Security Warning Disabled In Excel

producthighPython One-Liners with Base64 Decoding

producthighPython Spawning Pretty TTY on Windows

Show all 16 top matchesproducthighCredential Dumping Activity By Python Based Tool
producthighPython Function Execution Security Warning Disabled In Excel - Registry
producthighEnable LM Hash Storage - ProcCreation
producthighProtected Storage Service Access
producthighEnable LM Hash Storage
productmediumGoogle Cloud Storage Buckets Modified or Deleted
productmediumESXi Storage Information Discovery Via ESXCLI
productmediumWrite Protect For Storage Disabled
productlowGoogle Cloud Storage Buckets Enumeration
productlowSuspicious File Access to Browser Credential Storage

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Scoring & Timeline

4.3

MEDIUM · CVSS v2 (legacy) · secalert@redhat.com

View on NVD

This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.

v2 Vector

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

Published to NVD03 Jul 2012 · 07:55 PM

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Vendor Advisories

suse-csafopenSUSE-SU-2024:10077-1
suse-csafSUSE-SU-2020:0497-1
suse-csafSUSE-SU-2017:2699-1
suse-csafSUSE-SU-2017:2700-1
rhsaRHSA-2017:3239Moderate
Show all 14 vendor advisoriessuse-csafSUSE-SU-2017:0424-1
suse-csafSUSE-SU-2017:0415-1
rhsaRHSA-2016:2957Low
rhsaRHSA-2016:0062Moderate
usnUSN-1613-2
usnUSN-1613-1
usnUSN-1527-2
usnUSN-1527-1
rhsaRHSA-2012:0731Moderate

🔗

References & Sources

Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.

http://bugs.python.org/issue13703#msg151870Issue TrackingThird Party Advisory

http://lists.apple.com/archives/security-announce/2013/Oct/msg00004.htmlBroken LinkMailing List

http://lists.apple.com/archives/security-announce/2015/Dec/msg00005.htmlBroken LinkMailing List

http://mail.libexpat.org/pipermail/expat-discuss/2012-March/002768.htmlBroken Link

http://rhn.redhat.com/errata/RHSA-2012-0731.htmlThird Party Advisory

http://rhn.redhat.com/errata/RHSA-2016-0062.htmlThird Party Advisory

Show all 22 references

http://rhn.redhat.com/errata/RHSA-2016-2957.htmlThird Party Advisory

http://secunia.com/advisories/49504Not Applicable

http://secunia.com/advisories/51024Not Applicable

http://secunia.com/advisories/51040Not Applicable

http://sourceforge.net/projects/expat/files/expat/2.1.0/Release NotesThird Party Advisory

http://sourceforge.net/tracker/?func=detail&atid=110127&aid=3496608&group_id=10127Third Party Advisory

http://www.debian.org/security/2012/dsa-2525Third Party Advisory

http://www.mandriva.com/security/advisories?name=MDVSA-2012:041Broken Link

http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.htmlThird Party Advisory

http://www.securityfocus.com/bid/52379Third Party AdvisoryVDB Entry

http://www.ubuntu.com/usn/USN-1527-1Third Party Advisory

http://www.ubuntu.com/usn/USN-1613-1Third Party Advisory

http://www.ubuntu.com/usn/USN-1613-2Third Party Advisory

https://kc.mcafee.com/corporate/index?page=content&id=SB10365Broken Link

https://support.apple.com/HT205637Third Party Advisory

https://www.tenable.com/security/tns-2016-20Third Party Advisory

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