NULL pointer dereference in FreeType - CVE-2012-5668
Published: January 24, 2013 / Updated: July 28, 2020
Vulnerability identifier: #VU32696
CSH Severity: Medium
CVSS v4: 6.9 [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]
CVE-ID: CVE-2012-5668
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error. A remote attacker can trigger denial of service conditions via vectors related to BDF fonts and the improper handling of an "allocation error" in the bdf_free_font function.
Affected software
FreeType
Gentoo Linux
Slackware Linux
freetype (Alpine package)
Gentoo Linux
Slackware Linux
freetype (Alpine package)
How to mitigate CVE-2012-5668
Update to version 2.4.11.
FreeType - update to 2.4.11
freetype (Alpine package) - update to 2.4.11-r0
freetype (Alpine package) - update to 2.4.11-r0
External References
- http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=9b6b5754b57c12b820e01305eb69b8863a161e5a
- http://lists.opensuse.org/opensuse-updates/2013-01/msg00056.html
- http://lists.opensuse.org/opensuse-updates/2013-01/msg00068.html
- http://lists.opensuse.org/opensuse-updates/2013-01/msg00078.html
- http://secunia.com/advisories/51826
- http://secunia.com/advisories/51900
- http://www.freetype.org/
- http://www.openwall.com/lists/oss-security/2012/12/25/2
- http://www.securitytracker.com/id?1027921
- http://www.slackware.com/security/viewer.php?l=slackware-security&y=2013&m=slackware-security.520186
- http://www.ubuntu.com/usn/USN-1686-1
- https://savannah.nongnu.org/bugs/?37905