Resource exhaustion in Libexpat Project
CVE-2012-0876
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.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v2 metric
CVSS v2 base score 4.3 (Medium). Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.057 (92.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 92.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.057 · newest: 0.057 · change: 0.000
Affected products
- Libexpat Project
- Oracle Solaris — versions 11.3
- Python
- Canonical Ubuntu Linux — versions 8.04, 10.04, 11.04
- Debian Linux — versions 6.0, 7.0
- Red Hat Enterprise Linux Desktop — versions 5.0, 6.0
- Red Hat Enterprise Linux Eus — versions 6.2
- Red Hat Enterprise Linux Server — versions 5.0, 6.0
- Red Hat Enterprise Linux Server Aus — versions 6.2
- Red Hat Enterprise Linux Workstation — versions 5.0, 6.0
Weakness classification (CWE)
References
- secunia.com/advisories/49504 (Not Applicable, third-party-advisory)
- sourceforge.net/tracker/ (Third Party Advisory)
- www.tenable.com/security/tns-2016-20 (Third Party Advisory)
- www.ubuntu.com/usn/USN-1527-1 (vendor-advisory, Third Party Advisory)
- bugs.python.org/issue13703 (Third Party Advisory, Issue Tracking)
- support.apple.com/HT205637 (Third Party Advisory)
- secunia.com/advisories/51040 (Not Applicable, third-party-advisory)
- rhn.redhat.com/errata/RHSA-2012-0731.html (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/52379 (VDB Entry, Third Party Advisory, vdb-entry)
- sourceforge.net/projects/expat/files/expat/2.1.0/ (Third Party Advisory, Release Notes)