Mozilla Firefox/Thunderbird 15 nsCharTraits::length 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.
4.9$0-$5k0.00

A vulnerability was found in Mozilla Firefox and Thunderbird 15 (Web Browser). It has been classified as critical. This affects the function nsCharTraits::length. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

buffer overflow in the nschartraits::length function in mozilla firefox before 16.0, firefox esr 10.x before 10.0.8, thunderbird before 16.0, thunderbird esr 10.x before 10.0.8, and seamonkey before 2.13 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.

The weakness was disclosed 10/09/2012 by Atte Kettunen (OUSPG) with Oulu University Secure Programming Group as MFSA 2012-86 as confirmed advisory (Website). The advisory is shared at mozilla.org. The public release has been coordinated in cooperation with Mozilla. This vulnerability is uniquely identified as CVE-2012-4185 since 08/08/2012. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 62484 (CentOS 5 / 6 : firefox (CESA-2012:1350)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 120583 (Red Hat Update for Xulrunner Firefox (RHSA-2012:1350)).

Upgrading to version 16 eliminates this vulnerability. The upgrade is hosted for download at mozilla.org. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (79162) and Tenable (62484). The entries 6053, 6636, 6637 and 6638 are pretty similar.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

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

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 4.9

VulDB Base Score: 5.6
VulDB Temp Score: 4.9
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
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Dayunlockunlockunlockunlock
Todayunlockunlockunlockunlock

Nessus ID: 62484
Nessus Name: CentOS 5 / 6 : firefox (CESA-2012:1350)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 881512
OpenVAS Name: CentOS Update for firefox CESA-2012:1350 centos5
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Firefox/Thunderbird 16
McAfee IPS: 🔍
McAfee IPS Version: 🔍

Timelineinfo

08/08/2012 🔍
10/09/2012 +62 days 🔍
10/09/2012 +0 days 🔍
10/09/2012 +0 days 🔍
10/10/2012 +1 days 🔍
10/10/2012 +0 days 🔍
10/10/2012 +0 days 🔍
10/10/2012 +0 days 🔍
10/10/2012 +0 days 🔍
10/11/2012 +1 days 🔍
10/12/2012 +1 days 🔍
04/18/2021 +3110 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: MFSA 2012-86
Researcher: Atte Kettunen (OUSPG)
Organization: Oulu University Secure Programming Group
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2012-4185 (🔍)
OVAL: 🔍

X-Force: 79162 - Mozilla Firefox, Thunderbird, and SeaMonkey nsCharTraits::length() buffer overflow, High Risk
SecurityTracker: 1027631 - Mozilla Firefox Multiple Bugs Let Remote Users Execute Arbitrary Code, Spoof Information, and Inject Scripting Code
Vulnerability Center: 36477 - Mozilla Firefox, Thunderbird and SeaMonkey nsCharTraits Buffer Overflow Vulnerability, Critical
SecurityFocus: 56127 - Mozilla Firefox/Thunderbird/SeaMonkey CVE-2012-4185 Buffer Overflow Vulnerability
Secunia: 50856 - Mozilla Firefox / Thunderbird Multiple Vulnerabilities, Highly Critical
OSVDB: 86116

See also: 🔍

Entryinfo

Created: 10/12/2012 14:44
Updated: 04/18/2021 08:46
Changes: 10/12/2012 14:44 (87), 01/31/2018 09:54 (10), 04/18/2021 08:46 (2)
Complete: 🔍

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to stay up to date on a daily basis?

Enable the mail alert feature now!