CVE-2012-0876
MEDIUM severity · CVSS 4.3 · Uncontrolled resource consumption
4.3CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexity—
Privileges required—
User interaction—
Confidentiality impactNone
Integrity impactNone
Availability impact—
Exploit probability (EPSS)6%
AV:N/AC:M/Au:N/C:N/I:N/A:P
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Additional information
- NVD record
- http://bugs.python.org/issue13703#msg151870Advisory
- 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.htmlAdvisory
- http://rhn.redhat.com/errata/RHSA-2016-0062.htmlAdvisory
- http://rhn.redhat.com/errata/RHSA-2016-2957.htmlAdvisory
- http://secunia.com/advisories/49504