Mozilla Firefox/Thunderbird prior 23.0 memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability has been found in Mozilla Firefox and Thunderbird (Web Browser) and classified as very critical. Affected by this vulnerability is an unknown function. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The software 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 23.0, Firefox ESR 17.x before 17.0.8, Thunderbird before 17.0.8, Thunderbird ESR 17.x before 17.0.8, and SeaMonkey before 2.20 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.

The weakness was disclosed 08/06/2013 by Jeff Gilbert and Hendrik Skupin (Nils) as MFSA 2013-63 as confirmed advisory (Website). The advisory is shared at The public release has been coordinated in cooperation with Mozilla. This vulnerability is known as CVE-2013-1701 since 02/13/2013. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/21/2021).

The vulnerability scanner Nessus provides a plugin with the ID 69245 (CentOS 5 / 6 : firefox (CESA-2013:1140)), 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 121374 (Mozilla Firefox / Thunderbird / SeaMonkey Multiple Vulnerabilities).

Upgrading to version 23.0 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 Vulnerability Center (SBV-40864) and Tenable (69245). The entries 9876, 9878, 9879 and 9880 are pretty similar.


  • Firefox 22.0
  • Thunderbird 17.0.7
  • SeaMonkey 2.19
  • Firefox ESR 17.0.7
  • Thunderbird ESR 17.0.7






  • open-source

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.5

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
VulDB Vector: 🔍
VulDB Reliability: 🔍



VulDB Base Score: 🔍
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NVD Base Score: 🔍


Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 69245
Nessus Name: CentOS 5 / 6 : firefox (CESA-2013:1140)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 892735
OpenVAS Name: Debian Security Advisory DSA 2735-1 (iceweasel - several vulnerabilities
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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


Recommended: Upgrade
Status: 🔍

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

Upgrade: Firefox/Thunderbird 23.0


02/13/2013 🔍
08/06/2013 +174 days 🔍
08/06/2013 +0 days 🔍
08/06/2013 +0 days 🔍
08/06/2013 +0 days 🔍
08/06/2013 +0 days 🔍
08/07/2013 +1 days 🔍
08/07/2013 +0 days 🔍
08/08/2013 +1 days 🔍
08/09/2013 +1 days 🔍
05/21/2021 +2842 days 🔍



Advisory: MFSA 2013-63
Researcher: Jeff Gilbert/Hendrik Skupin (Nils)
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2013-1701 (🔍)

Vulnerability Center: 40864 - Mozilla Firefox, Thunderbird and SeaMonkey Remote DoS and Potential Code Execution Vulnerability via Unspecified Vectors Involving The Web Browser - CVE-2013-1701, Critical
SecurityFocus: 61864 - Mozilla Firefox/SeaMonkey CVE-2013-1704 Use-After-Free Memory Corruption Vulnerability
Secunia: 54013 - Ubuntu update for thunderbird, Highly Critical
OSVDB: 96011

See also: 🔍


Created: 08/09/2013 06:01 PM
Updated: 05/21/2021 09:19 AM
Changes: 08/09/2013 06:01 PM (86), 01/31/2018 09:55 AM (3), 05/21/2021 09:19 AM (2)
Complete: 🔍
Committer: olku


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