Mozilla Firefox 42 XDRBuffer::grow 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 has been found in Mozilla Firefox 42 (Web Browser) and classified as critical. This vulnerability affects the function XDRBuffer::grow. 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 weakness was released 12/15/2015 by Ronald Crane (musicDespiteEverything) as MFSA2015-144 as confirmed security advisory (Website). The advisory is shared for download at This vulnerability was named CVE-2015-7220 since 09/16/2015. The attack can be initiated remotely. No form of authentication is required for a successful 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 07/01/2022). The advisory points out:

Security researcher Ronald Crane reported three buffer overflows affecting released code that were found through code inspection. They do not all have clear mechanisms to be exploited through web content but are vulnerable if a mechanism can be found to trigger them.

The vulnerability scanner Nessus provides a plugin with the ID 87385 (FreeBSD : mozilla -- multiple vulnerabilities (2c2d1c39-1396-459a-91f5-ca03ee7c64c6)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context local. The commercial vulnerability scanner Qualys is able to test this issue with plugin 168484 (OpenSuSE Security Update for seamonkey (openSUSE-SU-2016:0307-1)).

Upgrading to version 43 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-55300) and Tenable (87385). Entries connected to this vulnerability are available at 79805, 79806, 79807 and 79808.






  • open-source

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍



VulDB Base Score: 🔍
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Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 87385
Nessus Name: FreeBSD : mozilla -- multiple vulnerabilities (2c2d1c39-1396-459a-91f5-ca03ee7c64c6)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 803852
OpenVAS Name: Mozilla Firefox Multiple Vulnerabilities - Dec15 (Windows)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
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Threat Intelligenceinfo

Interest: 🔍
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Recommended: Upgrade
Status: 🔍

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0-Day Time: 🔍
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Upgrade: Firefox 43


09/16/2015 🔍
12/15/2015 +90 days 🔍
12/15/2015 +0 days 🔍
12/15/2015 +0 days 🔍
12/15/2015 +0 days 🔍
12/16/2015 +1 days 🔍
12/16/2015 +0 days 🔍
12/16/2015 +0 days 🔍
12/16/2015 +0 days 🔍
07/01/2022 +2389 days 🔍



Advisory: MFSA2015-144
Researcher: Ronald Crane (musicDespiteEverything)
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-7220 (🔍)
SecurityTracker: 1034426
Vulnerability Center: 55300 - Mozilla Firefox <43 Remote Unspecified Vulnerability in XDRBuffer - CVE-2015-7220, Critical
SecurityFocus: 79280 - Mozilla Firefox Multiple Security Vulnerabilities

See also: 🔍


Created: 12/16/2015 11:36 AM
Updated: 07/01/2022 09:01 AM
Changes: 12/16/2015 11:36 AM (70), 05/15/2018 09:14 AM (11), 07/01/2022 09:01 AM (3)
Complete: 🔍


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