Mozilla Firefox 30.0/31.0/31.1.0/32.0 Web Audio ComputeCustom memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability was found in Mozilla Firefox 30.0/31.0/31.1.0/32.0 (Web Browser). It has been rated as critical. Affected by this issue is the function mozilla::dom::OscillatorNodeEngine::ComputeCustom of the component Web Audio. 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 weakness was released 10/14/2014 by Holger Fuhrmannek as MFSA2014-76 as confirmed advisory (Website). The advisory is shared for download at This vulnerability is handled as CVE-2014-1577 since 01/16/2014. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 02/21/2022).

The vulnerability scanner Nessus provides a plugin with the ID 78489 (CentOS 5 / 6 / 7 : firefox (CESA-2014:1635)), 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 122754 (Red Hat Update for Xulrunner firefox (RHSA-2014:1635)).

Upgrading to version 33 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 (97004) and Tenable (78489). is providing further details.


  • Mozilla Firefox 32.0
  • Mozilla Firefox ESR 31.1
  • Mozilla Thunderbird 31.1







CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍


VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 8.7

VulDB Base Score: 10.0
VulDB Temp Score: 8.7
VulDB Vector: 🔍
VulDB Reliability: 🔍



VulDB Base Score: 🔍
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NVD Base Score: 🔍


Class: Memory corruption
CWE: CWE-119

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 78489
Nessus Name: CentOS 5 / 6 / 7 : firefox (CESA-2014:1635)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 703050
OpenVAS Name: Debian Security Advisory DSA 3050-1 (iceweasel - security update)
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 33


01/16/2014 🔍
10/14/2014 +271 days 🔍
10/14/2014 +0 days 🔍
10/14/2014 +0 days 🔍
10/14/2014 +0 days 🔍
10/14/2014 +0 days 🔍
10/15/2014 +1 days 🔍
10/15/2014 +0 days 🔍
10/15/2014 +0 days 🔍
02/21/2022 +2686 days 🔍



Advisory: MFSA2014-76
Researcher: Holger Fuhrmannek
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-1577 (🔍)

X-Force: 97004 - Mozilla Firefox andThunderbird Web Audio code execution, High Risk
SecurityTracker: 1031028 - Mozilla Firefox Bugs Let Remote Users Execute Arbitrary Code, Bypass Same Origin-Policy, and Obtain Potentially Sensitive Information
Vulnerability Center: 46469 - Mozilla Firefox <33, Firefox ESR <31.2 and Thunderbird <31.2 Remote DoS and Information Disclosure- CVE-2014-1577, Medium
SecurityFocus: 70440 - Mozilla Firefox/Thunderbird CVE-2014-1577 Out of Bounds Memory Corruption Vulnerability
Secunia: 61387

Misc.: 🔍


Created: 10/15/2014 10:55 AM
Updated: 02/21/2022 08:25 PM
Changes: 10/15/2014 10:55 AM (88), 06/08/2017 10:28 AM (3), 02/21/2022 08:17 PM (2), 02/21/2022 08:25 PM (1)
Complete: 🔍
Cache ID: 34:F3E:40


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