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6.4	$0-$5k	0.00

A vulnerability, which was classified as critical, has been found in Mozilla Firefox up to 11.0 (Web Browser). This issue affects the function cairo_dwrite_font_face of the component Font Rendering. 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 confidentiality, integrity, and availability. The summary by CVE is:

The cairo-dwrite implementation in Mozilla Firefox 4.x through 11.0, Firefox ESR 10.x before 10.0.4, Thunderbird 5.0 through 11.0, Thunderbird ESR 10.x before 10.0.4, and SeaMonkey before 2.9, when certain Windows Vista and Windows 7 configurations are used, does not properly restrict font-rendering attempts, which allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via unspecified vectors.

The weakness was presented 04/24/2012 by Jeroen van der Gun (wushi) with iDefense as MFSA 2012-25 as confirmed knowledge base article (Website). It is possible to read the advisory at mozilla.org. The public release was coordinated in cooperation with Mozilla. The identification of this vulnerability is CVE-2012-0472 since 01/09/2012. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details as well as a private exploit are known.

A private exploit has been developed by wushi. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 58850 (CentOS 5 / 6 : firefox (CESA-2012:0515)), 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 120189 (Red Hat Update for Xulrunner Firefox (RHSA-2012:0515)).

Upgrading to version 12.0 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (58850). See 5005, 5301, 5302 and 5304 for similar entries.

Productinfo

Type

• Web Browser

Vendor

• Mozilla

Name

• Firefox

Version

• 4.0
• 4.0.1
• 5.0
• 6.0
• 6.0.1
• 6.0.2
• 7.0
• 7.0.1
• 8.0
• 8.0.1
• 9.0
• 9.0.1
• 10.0
• 10.0.1
• 10.0.2
• 10.0.3
• 11.0

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: 7.1
VulDB Meta Temp Score: 6.4

VulDB Base Score: 7.1
VulDB Temp Score: 6.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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: 🔍
Access: Private
Status: Proof-of-Concept
Author: wushi

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

Nessus ID: 58850
Nessus Name: CentOS 5 / 6 : firefox (CESA-2012:0515)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 71269
OpenVAS Name: FreeBSD Ports: firefox
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 12.0

Timelineinfo

01/09/2012 🔍
04/24/2012 +106 days 🔍
04/24/2012 +0 days 🔍
04/24/2012 +0 days 🔍
04/24/2012 +0 days 🔍
04/24/2012 +0 days 🔍
04/25/2012 +1 days 🔍
04/25/2012 +0 days 🔍
04/28/2012 +3 days 🔍
05/03/2012 +5 days 🔍
03/24/2021 +3247 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: MFSA 2012-25
Researcher: Jeroen van der Gun (wushi)
Organization: iDefense
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2012-0472 (🔍)
OVAL: 🔍

SecurityTracker: 1026971 - Mozilla Firefox Multiple Bugs Let Remote Users Execute Arbitrary Code, Spoof Web Sites, Obtain Information, and Conduct Cross-Site Scripting Attacks
Vulnerability Center: 34952 - Mozilla Firefox <12, Thunderbird <12, SeaMonkey <2.9 Cairo-dwrite Memory Corruption (CVE-2012-0472), Medium
SecurityFocus: 53218 - Mozilla Firefox/Thunderbird/SeaMonkey 'cairo-dwrite' CVE-2012-0472 Memory Corruption Vulnerability
Secunia: 48932 - Mozilla Firefox / Thunderbird Multiple Vulnerabilities, Highly Critical
OSVDB: 81518

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

Entryinfo

Created: 05/03/2012 12:04
Updated: 03/24/2021 08:37
Changes: 05/03/2012 12:04 (83), 01/31/2018 09:53 (10), 03/24/2021 08:37 (2)
Complete: 🔍

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