Mozilla Firefox 3.6 Browser Engine SanitizeGlyphRuns 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.
6.6$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Mozilla Firefox 3.6. Affected by this vulnerability is the function gfxTextRun::SanitizeGlyphRuns of the component Browser Engine. Executing a manipulation can lead to memory corruption. This vulnerability is registered as CVE-2010-0166. Furthermore, an exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Mozilla Firefox 3.6 (Web Browser). It has been declared as critical. This vulnerability affects the function gfxTextRun::SanitizeGlyphRuns of the component Browser Engine. 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. CVE summarizes:

The gfxTextRun::SanitizeGlyphRuns function in gfx/thebes/src/gfxFont.cpp in the browser engine in Mozilla Firefox 3.6 before 3.6.2 on Mac OS X, when the Core Text API is used, does not properly perform certain deletions, which allows remote attackers to cause a denial of service (memory corruption and application crash) and possibly execute arbitrary code via an HTML document containing invisible Unicode characters, as demonstrated by the U+FEFF, U+FFF9, U+FFFA, and U+FFFB characters.

The weakness was published 03/25/2010 by Jesse Ruderman as Bug 538065 as not defined bug report (Bugzilla). The advisory is shared for download at bugzilla.mozilla.org. This vulnerability was named CVE-2010-0166. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known.

It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 63402 (GLSA-201301-01 : Mozilla Products: Multiple vulnerabilities (BEAST)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 117103 (Mozilla Firefox, Thunderbird, SeaMonkey Multiple Vulnerabilities (MFSA 2010-09, MFSA 2010-10, MFSA 2010-11, MFSA 2010-12, MFSA 2010-13, MFSA 2010-14, MFSA 2010-15)).

Upgrading to version 3.6 eliminates this vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (33800), Tenable (63402), SecurityFocus (BID 38943†) and Vulnerability Center (SBV-25145†). Similar entries are available at VDB-5327, VDB-36797, VDB-36612 and VDB-37141. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 63402
Nessus Name: GLSA-201301-01 : Mozilla Products: Multiple vulnerabilities (BEAST)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 54897
OpenVAS Name: Gentoo Linux Local Check: https://security.gentoo.org/glsa/201301-01
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Firefox 3.6

Timelineinfo

01/06/2010 🔍
03/24/2010 +77 days 🔍
03/24/2010 +0 days 🔍
03/25/2010 +1 days 🔍
03/25/2010 +0 days 🔍
03/25/2010 +0 days 🔍
03/19/2015 +1820 days 🔍
05/03/2026 +4063 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: Bug 538065
Researcher: Jesse Ruderman
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2010-0166 (🔍)
GCVE (CVE): GCVE-0-2010-0166
GCVE (VulDB): GCVE-100-52360

OVAL: 🔍

SecurityFocus: 38943 - Mozilla Firefox 'gfxTextRun::SanitizeGlyphRuns()' Remote Memory Corruption Vulnerability
Vulnerability Center: 25145 - Mozilla Firefox Prior to 3.6.2\x27gfxTextRun::SanitizeGlyphRuns()\x27 Remote Code Execution or DoS, Medium

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 03/19/2015 12:22
Updated: 05/03/2026 09:15
Changes: 03/19/2015 12:22 (59), 02/22/2017 10:43 (16), 09/05/2021 16:38 (4), 09/05/2021 16:45 (1), 12/14/2024 19:14 (17), 02/02/2025 00:22 (2), 05/03/2026 09:15 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you know our Splunk app?

Download it now for free!