#VU43155 Buffer overflow in FreeType - CVE-2012-5670

Vulnerability identifier: #VU43155

Vulnerability 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-2012-5670

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FreeType
Universal components / Libraries / Libraries used by multiple products

Vendor: freetype.org

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

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

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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.