4.3 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
0.004 Low
EPSS
Percentile
74.2%
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.
Author | Note |
---|---|
jdstrand | RedHat issued https://rhn.redhat.com/errata/RHBA-2012-1250.html for python as a result of the added XML_SetHashSalt symbol |
ebarretto | tla uses system expat as of 1.3.5+dfsg-15 |
rodrigo-zaiden | the vulnerable code was added in expat version 1.95.7, with commit https://github.com/libexpat/libexpat/commit/8650b04b libxmltok seems to use code based on expat version 1.2 and does not add this commit, so, it’s not affected. |
ccdm94 | cmake 3.20.5 and forward uses expat 2.2.10+. |
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 23.10 | noarch | audacity | < any | UNKNOWN |
ubuntu | 24.04 | noarch | audacity | < any | UNKNOWN |
ubuntu | 16.04 | noarch | ayttm | < any | UNKNOWN |
ubuntu | 16.04 | noarch | cableswig | < any | UNKNOWN |
ubuntu | 18.04 | noarch | cadaver | < any | UNKNOWN |
ubuntu | 20.04 | noarch | cadaver | < any | UNKNOWN |
ubuntu | 22.04 | noarch | cadaver | < any | UNKNOWN |
ubuntu | 23.10 | noarch | cadaver | < any | UNKNOWN |
ubuntu | 24.04 | noarch | cadaver | < any | UNKNOWN |
ubuntu | 16.04 | noarch | cadaver | < any | UNKNOWN |
blog.gmane.org/gmane.text.xml.expat.bugs/month=20120301
www.openwall.com/lists/oss-security/2012/03/09/1
launchpad.net/bugs/cve/CVE-2012-0876
nvd.nist.gov/vuln/detail/CVE-2012-0876
rhn.redhat.com/errata/RHSA-2012-0731.html
security-tracker.debian.org/tracker/CVE-2012-0876
ubuntu.com/security/notices/USN-1527-1
ubuntu.com/security/notices/USN-1527-2
ubuntu.com/security/notices/USN-1613-1
ubuntu.com/security/notices/USN-1613-2
www.cve.org/CVERecord?id=CVE-2012-0876