libxml2 use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.9$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in libxml2. This vulnerability affects unknown code. The manipulation results in use after free. This vulnerability is known as CVE-2016-5131. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical has been found in libxml2 (Document Processing Software) (unknown version). Affected is an unknown code block. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Use-after-free vulnerability in libxml2 through 2.9.4, as used in Google Chrome before 52.0.2743.82, allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors related to the XPointer range-to function.

The bug was discovered 07/20/2016. The weakness was published 12/23/2016 by Mariusz Mlynski (Cloudfuzzer) with Tencent as [SECURITY] [DSA 3744-1] libxml2 security update as confirmed mailinglist post (Bugtraq). The advisory is shared for download at seclists.org. This vulnerability is traded as CVE-2016-5131 since 05/31/2016. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 3 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 92666 (Debian DSA-3637-1 : chromium-browser - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370091 (Google Chrome Prior to 52.0.2743.82 Multiple Vulnerabilities).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (92666) and SecurityFocus (BID 92053†). Similar entries are available at VDB-90229, VDB-90230, VDB-90231 and VDB-90232. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

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

NVD Base Score: 8.8
NVD Vector: 🔍

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: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 92666
Nessus Name: Debian DSA-3637-1 : chromium-browser - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 64377
OpenVAS Name: Apple Mac OS X Multiple Vulnerabilities-01 September-2016
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/31/2016 🔍
07/20/2016 +50 days 🔍
07/20/2016 +0 days 🔍
07/23/2016 +3 days 🔍
07/31/2016 +8 days 🔍
08/02/2016 +2 days 🔍
12/23/2016 +143 days 🔍
12/25/2016 +2 days 🔍
12/04/2025 +3266 days 🔍

Sourcesinfo

Advisory: [SECURITY] [DSA 3744-1] libxml2 security update
Researcher: Mariusz Mlynski (Cloudfuzzer)
Organization: Tencent
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-5131 (🔍)
GCVE (CVE): GCVE-0-2016-5131
GCVE (VulDB): GCVE-100-94680

OVAL: 🔍

SecurityFocus: 92053 - Google Chrome Prior to 52.0.2743.82 Multiple Security Vulnerabilities
SecurityTracker: 1036428

See also: 🔍

Entryinfo

Created: 12/25/2016 17:01
Updated: 12/04/2025 18:25
Changes: 12/25/2016 17:01 (59), 07/17/2019 15:16 (15), 10/12/2022 17:20 (2), 10/12/2022 17:29 (11), 12/04/2025 18:25 (15)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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