Mozilla Firefox/Thunderbird 14 XSLT Format-Number Feature information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

A vulnerability, which was classified as problematic, was found in Mozilla Firefox and Thunderbird 14 (Web Browser). Affected is an unknown code block of the component XSLT Format-Number Feature. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. CVE summarizes:

The format-number functionality in the XSLT implementation in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allows remote attackers to obtain sensitive information via unspecified vectors that trigger a heap-based buffer over-read.

The weakness was published 08/28/2012 by Nicolas Grégoire (vsemozhetbyt) as MFSA 2012-65 as confirmed advisory (Website). The advisory is shared for download at mozilla.org. The public release has been coordinated with the vendor. This vulnerability is traded as CVE-2012-3972 since 07/11/2012. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are unknown but a private exploit is available. The MITRE ATT&CK project declares the attack technique as T1592. Security research Nicolas Grégoire used the Address Sanitizer tool to discover an out-of-bounds read in the format-number feature of XSLT, which can cause inaccurate formatting of numbers and information leakage.

After 7 months, there has been an exploit disclosed. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 61721 (CentOS 5 / 6 : firefox (CESA-2012:1210)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks.

Upgrading to version 15 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 (61721). Further details are available at bugzilla.mozilla.org. Similar entries are available at 6036, 6035, 6039 and 6040.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
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CVSSv2info

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Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
ATT&CK: T1592

Local: No
Remote: Yes

Availability: 🔍
Access: Private
Status: Proof-of-Concept

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Nessus ID: 61721
Nessus Name: CentOS 5 / 6 : firefox (CESA-2012:1210)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 892553
OpenVAS Name: Debian Security Advisory DSA 2553-1 (iceweasel - several vulnerabilities
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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Exploit Delay Time: 🔍

Upgrade: Firefox/Thunderbird 15

Timelineinfo

07/11/2012 🔍
08/28/2012 +48 days 🔍
08/28/2012 +0 days 🔍
08/28/2012 +0 days 🔍
08/28/2012 +0 days 🔍
08/29/2012 +1 days 🔍
08/29/2012 +0 days 🔍
08/29/2012 +0 days 🔍
08/29/2012 +0 days 🔍
08/29/2012 +0 days 🔍
09/02/2012 +4 days 🔍
02/25/2013 +176 days 🔍
03/27/2021 +2952 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: MFSA 2012-65
Researcher: Nicolas Grégoire (vsemozhetbyt)
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2012-3972 (🔍)
OVAL: 🔍

SecurityTracker: 1027450 - Mozilla Firefox Multiple Bugs Let Remote Users Execute Arbitrary Code
Vulnerability Center: 36001 - Mozilla Firefox, Thunderbird, and SeaMonkey Remote Out of Bounds Read Vulnerability (CVE-2012-3972), High
SecurityFocus: 55310 - Mozilla Firefox/SeaMonkey/Thunderbird CVE-2012-3972 Heap Buffer Overflow Vulnerability
Secunia: 50088 - Mozilla Firefox Multiple Vulnerabilities, Highly Critical
OSVDB: 84997

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

Entryinfo

Created: 09/02/2012 09:05
Updated: 03/27/2021 16:26
Changes: 09/02/2012 09:05 (82), 04/16/2017 11:07 (12), 03/27/2021 16:26 (3)
Complete: 🔍

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