FreeType up to 2.4.3 ttinterp.c Ins_SHZ memory corruption

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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.
6.9	$0-$5k	0.00

Summaryinfo

A vulnerability was found in FreeType. It has been classified as critical. This issue affects the function Ins_SHZ of the file ttinterp.c. This manipulation causes memory corruption. This vulnerability appears as CVE-2010-3814. There is no available exploit.

Detailsinfo

A vulnerability has been found in FreeType (Software Library) and classified as critical. Affected by this vulnerability is the function Ins_SHZ of the file ttinterp.c. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Heap-based buffer overflow in the Ins_SHZ function in ttinterp.c in FreeType 2.4.3 and earlier allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted SHZ bytecode instruction, related to TrueType opcodes, as demonstrated by a PDF document with a crafted embedded font.

The weakness was presented 11/26/2010 by Chris Evans (Website). It is possible to read the advisory at vupen.com. This vulnerability is known as CVE-2010-3814 since 10/07/2010. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 75505 (openSUSE Security Update : freetype2 (openSUSE-SU-2011:0361-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165464 (SUSE Enterprise Linux Security Update for freetype2 (SUSE-SU-2012:0553-1)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (75505), SecurityFocus (BID 44643†), Secunia (SA42314†), SecurityTracker (ID 1024767†) and Vulnerability Center (SBV-50973†). See VDB-4318, VDB-53770, VDB-55549 and VDB-55548 for similar entries. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Software Library

Name

FreeType

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.9

VulDB Base Score: 7.3
VulDB Temp Score: 6.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 75505
Nessus Name: openSUSE Security Update : freetype2 (openSUSE-SU-2011:0361-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 68991
OpenVAS Name: Debian Security Advisory DSA 2155-1 (freetype)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: git.savannah.gnu.org

Timelineinfo

10/07/2010 🔍
11/04/2010 +28 days 🔍
11/04/2010 +0 days 🔍
11/23/2010 +19 days 🔍
11/23/2010 +0 days 🔍
11/26/2010 +3 days 🔍
11/26/2010 +0 days 🔍
06/13/2014 +1295 days 🔍
03/19/2015 +279 days 🔍
07/02/2015 +105 days 🔍
10/05/2021 +2287 days 🔍

Sourcesinfo

Advisory: USN-1013-1⛔
Researcher: Chris Evans
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2010-3814 (🔍)
GCVE (CVE): GCVE-0-2010-3814
GCVE (VulDB): GCVE-100-55543

OVAL: 🔍

SecurityFocus: 44643 - FreeType TrueType Font Handling 'ttinterp.c' Remote Code Execution Vulnerability
Secunia: 42314 - Apple iOS Multiple Vulnerabilities, Highly Critical
SecurityTracker: 1024767 - FreeType Heap Overflow in Processing TrueType Fonts Lets Remote Users Execute Arbitrary Code
Vulnerability Center: 50973 - \x27ttinterp.c\x27 in FreeType Remote Arbitrary Code Execution or DoS Vulnerability, High
Vupen: ADV-2010-3046

See also: 🔍

Entryinfo

Created: 03/19/2015 14:37
Updated: 10/05/2021 18:49
Changes: 03/19/2015 14:37 (64), 07/03/2017 08:58 (19), 10/05/2021 18:41 (4), 10/05/2021 18:49 (1)
Complete: 🔍
Cache ID: 216:FE6:103