VDB-7238 · CVE-2012-5669 · BID 57041

FreeType 2.4.10 BDF File bdf/bdflib.c _bdf_parse_glyphs memory corruption

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.7	$0-$5k	0.00

A vulnerability, which was classified as problematic, has been found in FreeType 2.4.10 (Software Library). Affected by this issue is the function _bdf_parse_glyphs in the library bdf/bdflib.c of the component BDF File Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is availability. CVE summarizes:

The _bdf_parse_glyphs function in FreeType before 2.4.11 allows context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via vectors related to BDF fonts and an incorrect calculation that triggers an out-of-bounds read.

The weakness was presented 12/25/2012 by Mateusz Jurczyk with Google Security Team as Re: CVE Request - Multiple security fixes in freetype - 2.4.11 as confirmed mailinglist post (oss-sec mailing list). The advisory is available at seclists.org. The vendor was not involved in the coordination of the public release. This vulnerability is handled as CVE-2012-5669 since 10/24/2012. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 68720 (Oracle Linux 5 / 6 : freetype (ELSA-2013-0216)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 122006 (Solaris 11.1 Support Repository Update (SRU) 18.5.0 Missing).

Upgrading to version 2.4.11 eliminates this vulnerability. The upgrade is hosted for download at git.savannah.gnu.org. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.savannah.gnu.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (68720). See 7237, 9747, 34383 and 63415 for similar entries.

Productinfo

Type

Software Library

Name

FreeType

Version

2.4.10

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.7

VulDB Base Score: 5.9
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 68720
Nessus Name: Oracle Linux 5 / 6 : freetype (ELSA-2013-0216)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 881584
OpenVAS Name: CentOS Update for freetype CESA-2013:0216 centos5
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: FreeType 2.4.11
Patch: git.savannah.gnu.org

Timelineinfo

10/24/2012 🔍
12/25/2012 +62 days 🔍
12/25/2012 +0 days 🔍
12/25/2012 +0 days 🔍
12/25/2012 +0 days 🔍
12/25/2012 +0 days 🔍
01/05/2013 +11 days 🔍
01/15/2013 +10 days 🔍
01/17/2013 +2 days 🔍
01/24/2013 +7 days 🔍
07/12/2013 +169 days 🔍
04/20/2021 +2839 days 🔍

Sourcesinfo

Advisory: Re: CVE Request - Multiple security fixes in freetype - 2.4.11
Researcher: Mateusz Jurczyk
Organization: Google Security Team
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2012-5669 (🔍)
OVAL: 🔍

SecurityTracker: 1027921 - FreeType Multiple Bugs in BDF Implementation Let Remote Users Execute Arbitrary Code
Vulnerability Center: 38094 - FreeType <2.4.11 '_bdf_parse_glyphs()\x27 Out-of-Bounds Read Error Allows Remote DoS \\ Code Execution, Medium
SecurityFocus: 57041
Secunia: 51826 - Ubuntu update for freetype, Moderately Critical
OSVDB: 88819

See also: 🔍

Entryinfo

Created: 01/05/2013 14:07
Updated: 04/20/2021 14:43
Changes: 01/05/2013 14:07 (92), 04/23/2017 19:36 (1), 04/20/2021 14:43 (3)
Complete: 🔍