Buffer overflow in FreeType

1) Buffer overflow

EUVDB-ID: #VU43155

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2012-5670

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

The _bdf_parse_glyphs function in FreeType before 2.4.11 allows context-dependent attackers to cause a denial of service (out-of-bounds write and crash) via vectors related to BDF fonts and an ENCODING field with a negative value.

Mitigation

Install update from vendor's website.

Vulnerable software versions

FreeType: 1.3.1 - 2.4.9

External links

http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=7f2e4f4f553f6836be7683f66226afac3fa979b8
http://lists.opensuse.org/opensuse-updates/2013-01/msg00056.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
http://savannah.nongnu.org/bugs/?37907

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.