Mozilla Firefox up to 12.0 resource management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability classified as very critical has been found in Mozilla Firefox (Web Browser). This affects an unknown code. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Use-after-free vulnerability in the nsINode::ReplaceOrInsertBefore function in Mozilla Firefox 4.x through 12.0, Firefox ESR 10.x before 10.0.5, Thunderbird 5.0 through 12.0, Thunderbird ESR 10.x before 10.0.5, and SeaMonkey before 2.10 might allow remote attackers to execute arbitrary code via document changes involving replacement or insertion of a node.

The weakness was shared 06/05/2012 by Arthur Gerkis (rshaw) as 2012-38 as confirmed knowledge base article (Website). It is possible to read the advisory at The vendor cooperated in the coordination of the public release. This vulnerability is uniquely identified as CVE-2012-1946 since 03/30/2012. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/25/2021).

The vulnerability scanner Nessus provides a plugin with the ID 59388 (CentOS 5 / 6 : firefox (CESA-2012:0710)), 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 120275 (Red Hat Update for Xulrunner Firefox (RHSA-2012:0710)).

Upgrading to version 13.0 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (59388), SecurityFocus (BID 53792†), OSVDB (82674†), Secunia (SA49366†) and SecurityTracker (ID 1027120†).







CPE 2.3info

CPE 2.2info


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VulDB Meta Base Score: 9.6
VulDB Meta Temp Score: 9.2

VulDB Base Score: 9.6
VulDB Temp Score: 9.2
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Class: Resource management
CWE: CWE-399 / CWE-404

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Current Price Estimation: 🔍


Nessus ID: 59388
Nessus Name: CentOS 5 / 6 : firefox (CESA-2012:0710)
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OpenVAS ID: 71541
OpenVAS Name: FreeBSD Ports: firefox
OpenVAS File: 🔍
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Threat Intelligenceinfo

Interest: 🔍
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Recommended: Upgrade
Status: 🔍

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Upgrade: Firefox 13.0


03/30/2012 🔍
06/05/2012 +67 days 🔍
06/05/2012 +0 days 🔍
06/05/2012 +0 days 🔍
06/05/2012 +0 days 🔍
06/05/2012 +0 days 🔍
06/06/2012 +1 days 🔍
06/06/2012 +0 days 🔍
06/06/2012 +0 days 🔍
06/06/2012 +0 days 🔍
06/08/2012 +2 days 🔍
03/25/2021 +3212 days 🔍



Advisory: 2012-38
Researcher: Arthur Gerkis (rshaw)
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2012-1946 (🔍)

SecurityFocus: 53792 - Mozilla Firefox/Thunderbird/SeaMonkey Use-After-Free Remote Code Execution Vulnerability
Secunia: 49366 - Mozilla Firefox / Thunderbird / SeaMonkey Multiple Vulnerabilities, Highly Critical
OSVDB: 82674
SecurityTracker: 1027120 - Mozilla Firefox Multiple Bugs Let Remote Users Execute Arbitrary Code
Vulnerability Center: 35262 - Mozilla Firefox, Thunderbird and SeaMonkey Use-After-Free Vulnerability Allows Remote Code Execution, Critical


Created: 06/08/2012 06:26 PM
Updated: 03/25/2021 10:18 AM
Changes: 06/08/2012 06:26 PM (77), 01/31/2018 09:53 AM (11), 03/25/2021 10:18 AM (3)
Complete: 🔍
Cache ID: 3:730:40


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