SB2012070309 - Input validation error in libexpat expat
Published: July 3, 2012 Updated: August 3, 2020
Security Bulletin ID
SB2012070309
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: CVE-2012-1147)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
readfilemap.c in expat before 2.1.0 allows context-dependent attackers to cause a denial of service (file descriptor consumption) via a large number of crafted XML files.
Remediation
Install update from vendor's website.
References
- http://expat.cvs.sourceforge.net/viewvc/expat/expat/xmlwf/readfilemap.c?r1=1.14&r2=1.15
- http://lists.apple.com/archives/security-announce/2015/Dec/msg00005.html
- http://sourceforge.net/projects/expat/files/expat/2.1.0/
- http://sourceforge.net/tracker/?func=detail&aid=2895533&group_id=10127&atid=110127
- http://trac.wxwidgets.org/ticket/11194
- http://trac.wxwidgets.org/ticket/11432
- http://www.securityfocus.com/bid/52379
- http://www.securitytracker.com/id/1034344
- https://support.apple.com/HT205637