Mozilla Firefox up to 47 SVG Bidirectional Content AddOpening memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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8.7$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Mozilla Firefox up to 47. The impacted element is the function nsBidi::BracketData::AddOpening of the component SVG Bidirectional Content Handler. This manipulation causes memory corruption. This vulnerability is tracked as CVE-2016-2838. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Mozilla Firefox up to 47 (Web Browser) and classified as critical. Affected by this vulnerability is the function nsBidi::BracketData::AddOpening of the component SVG Bidirectional Content Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Heap-based buffer overflow in the nsBidi::BracketData::AddOpening function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows remote attackers to execute arbitrary code via directional content in an SVG document.

The weakness was disclosed 08/02/2016 by Atte Kettunen (Inferno) with Google Chrome Security Team as MFSA 2016-64 as confirmed security advisory (Website). It is possible to read the advisory at mozilla.org. This vulnerability is known as CVE-2016-2838 since 03/01/2016. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/23/2024). The advisory points out:

Using the Address Sanitizer tool, security researcher Atte Kettunen found a buffer overflow during the rendering of SVG format graphics with directional content. This is caused by a flaw in directional-isolate processing and results in a potentially exploitable crash.

The vulnerability scanner Nessus provides a plugin with the ID 92785 (Ubuntu 12.04 LTS / 14.04 LTS / 16.04 LTS : firefox vulnerabilities (USN-3044-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 157233 (Oracle Enterprise Linux Security Update for firefox (ELSA-2016-1551)).

Upgrading to version 48 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 (92785), SecurityFocus (BID 92261†) and SecurityTracker (ID 1036508†). The entries VDB-90424, VDB-90425, VDB-90426 and VDB-90428 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.7

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CNA Base Score: 8.8
CNA Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 92785
Nessus Name: Ubuntu 12.04 LTS / 14.04 LTS / 16.04 LTS : firefox vulnerabilities (USN-3044-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 65178
OpenVAS Name: Mozilla Firefox Esr Security Updates( mfsa_2016-62_2016-84 )-MAC OS X
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 48

Timelineinfo

03/01/2016 🔍
08/02/2016 +154 days 🔍
08/02/2016 +0 days 🔍
08/02/2016 +0 days 🔍
08/03/2016 +1 days 🔍
08/04/2016 +1 days 🔍
08/04/2016 +0 days 🔍
08/08/2016 +4 days 🔍
10/23/2024 +2998 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: MFSA 2016-64
Researcher: Atte Kettunen (Inferno)
Organization: Google Chrome Security Team
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-2838 (🔍)
GCVE (CVE): GCVE-0-2016-2838
GCVE (VulDB): GCVE-100-90427

OVAL: 🔍

SecurityFocus: 92261 - Mozilla Firefox Multiple Security Vulnerabilities
SecurityTracker: 1036508

See also: 🔍

Entryinfo

Created: 08/04/2016 09:21
Updated: 10/23/2024 03:55
Changes: 08/04/2016 09:21 (77), 03/16/2019 20:24 (14), 10/23/2024 03:55 (26)
Complete: 🔍
Cache ID: 216::103

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