NULL pointer dereference in FreeType

1) NULL pointer dereference

EUVDB-ID: #VU32696

Risk: Medium

CVSSv4.0: 2.7 [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]

CVE-ID: CVE-2012-5668

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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.

Mitigation

Update to version 2.4.11.

Vulnerable software versions

FreeType: 2.4.0 - 2.4.10

CPE2.3

• cpe:2.3:a:freetype_org:freetype:2.4.0:*:*:*:*:*:*:*
• cpe:2.3:a:freetype_org:freetype:2.4.1:*:*:*:*:*:*:*
• cpe:2.3:a:freetype_org:freetype:2.4.2:*:*:*:*:*:*:*

External links

https://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=9b6b5754b57c12b820e01305eb69b8863a161e5a
https://lists.opensuse.org/opensuse-updates/2013-01/msg00056.html
https://lists.opensuse.org/opensuse-updates/2013-01/msg00068.html
https://lists.opensuse.org/opensuse-updates/2013-01/msg00078.html
https://secunia.com/advisories/51826
https://secunia.com/advisories/51900
https://www.freetype.org/
https://www.openwall.com/lists/oss-security/2012/12/25/2
https://www.securitytracker.com/id?1027921
https://www.slackware.com/security/viewer.php?l=slackware-security&y=2013&m=slackware-security.520186
https://www.ubuntu.com/usn/USN-1686-1
https://savannah.nongnu.org/bugs/?37905

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.