Mozilla Firefox up to 29.0.1 use after free

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Mozilla Firefox up to 29.0.1 and classified as critical. This issue affects some unknown processing. Such manipulation leads to use after free. This vulnerability is documented as CVE-2014-1533. The attack can be executed remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Mozilla Firefox up to 29.0.1 (Web Browser). Affected by this issue is an unknown code. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability.

The weakness was released 06/10/2014 by Gary Kwong, Christoph Diehl, Christian Holler, Hannes Verschore, Jan de Mooij, Ryan VanderMeulen, Jeff Walden and Kyle Huey as MFSA2014-48 as confirmed advisory (Website). The advisory is shared for download at mozilla.org. This vulnerability is handled as CVE-2014-1533 since 01/16/2014. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The advisory points out:

Mozilla developers and community identified identified and fixed several memory safety bugs in the browser engine used in Firefox and other Mozilla-based products. Some of these bugs showed evidence of memory corruption under certain circumstances, and we presume that with enough effort at least some of these could be exploited to run arbitrary code.

The vulnerability scanner Nessus provides a plugin with the ID 74436 (Firefox ESR 24.x < 24.6 Multiple Vulnerabilities (Mac OS X)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 122124 (Red Hat Update for Xulrunner Firefox (RHSA-2014:0741)).

Upgrading to version 30.0 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 X-Force (93705), Tenable (74436), SecurityFocus (BID 67965†), Secunia (SA59171†) and SecurityTracker (ID 1030388†). bugzilla.mozilla.org is providing further details. Entries connected to this vulnerability are available at VDB-13557, VDB-13558, VDB-13559 and VDB-13560. Once again VulDB remains the best source for vulnerability data.

Affected

  • Mozilla Firefox 29.0.1
  • Mozilla Firefox ESR 24.5
  • Mozilla Thunderbird 24.5

Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.5

VulDB Base Score: 6.3
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 74436
Nessus Name: Firefox ESR 24.x < 24.6 Multiple Vulnerabilities (Mac OS X)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 90011
OpenVAS Name: Ubuntu Update for firefox USN-2243-1
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 30.0

Timelineinfo

01/16/2014 🔍
06/10/2014 +145 days 🔍
06/10/2014 +0 days 🔍
06/10/2014 +0 days 🔍
06/10/2014 +0 days 🔍
06/11/2014 +1 days 🔍
06/11/2014 +0 days 🔍
06/11/2014 +0 days 🔍
06/11/2014 +0 days 🔍
06/11/2014 +0 days 🔍
06/11/2014 +0 days 🔍
11/25/2025 +4185 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: MFSA2014-48
Researcher: Gary Kwong, Christoph Diehl, Christian Holler, Hannes Verschore, Jan de Mooij, Ryan VanderMeulen, Jeff Walden, Kyle Huey
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-1533 (🔍)
GCVE (CVE): GCVE-0-2014-1533
GCVE (VulDB): GCVE-100-13556

OVAL: 🔍
IAVM: 🔍

X-Force: 93705 - Mozilla Firefox code execution, High Risk
SecurityFocus: 67965 - Mozilla Firefox/Thunderbird CVE-2014-1533 Multiple Memory Corruption Vulnerabilities
Secunia: 59171 - Mozilla Firefox Multiple Vulnerabilities, Highly Critical
SecurityTracker: 1030388 - Mozilla Firefox Multiple Flaws Let Remote Users Execute Arbitrary Code and Conduct Clickjacking Attacks
Vulnerability Center: 44917 - Mozilla Firefox, Thunderbird and Seamonkey Remote Code Execution due to Memory Safety Bugs, Critical

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 06/11/2014 23:35
Updated: 11/25/2025 21:40
Changes: 06/11/2014 23:35 (81), 01/31/2018 09:55 (13), 06/22/2021 16:01 (2), 06/22/2021 16:06 (1), 11/25/2025 21:40 (15)
Complete: 🔍
Cache ID: 216:B90:103

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