libxml2 memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in libxml2. This affects an unknown part. The manipulation leads to memory corruption. This vulnerability is traded as CVE-2016-4658. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in libxml2 (Document Processing Software) (the affected version is unknown). It has been rated as critical. This issue affects an unknown code. 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 summary by CVE is:

libxml2 in Apple iOS before 10, OS X before 10.12, tvOS before 10, and watchOS before 3 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted XML document.

The bug was discovered 09/21/2016. The weakness was shared 12/23/2016 by YoungJin Yoon as [SECURITY] [DSA 3744-1] libxml2 security update as confirmed mailinglist post (Bugtraq). It is possible to read the advisory at seclists.org. The identification of this vulnerability is CVE-2016-4658 since 05/11/2016. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 4 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 94319 (SUSE SLED12 / SLES12 Security Update : libxml2 (SUSE-SU-2016:2650-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196731 (Ubuntu Security Notification for Libxml2 Vulnerabilities (USN-3235-1)).

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 (94319) and SecurityFocus (BID 93054†). The entries VDB-91993, VDB-91997, VDB-91998 and VDB-92002 are related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

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

NVD Base Score: 9.8
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: 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: 94319
Nessus Name: SUSE SLED12 / SLES12 Security Update : libxml2 (SUSE-SU-2016:2650-1)
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: 🔍

Patch: git.gnome.org

Timelineinfo

05/11/2016 🔍
09/20/2016 +132 days 🔍
09/21/2016 +1 days 🔍
09/25/2016 +4 days 🔍
10/26/2016 +31 days 🔍
10/27/2016 +1 days 🔍
12/23/2016 +57 days 🔍
12/25/2016 +2 days 🔍
10/12/2022 +2117 days 🔍

Sourcesinfo

Advisory: [SECURITY] [DSA 3744-1] libxml2 security update
Researcher: YoungJin Yoon
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-4658 (🔍)
GCVE (CVE): GCVE-0-2016-4658
GCVE (VulDB): GCVE-100-94679

OVAL: 🔍

SecurityFocus: 93054 - Apple iOS/tvOS/MacOS/watchOS Multiple Security Vulnerabilities
SecurityTracker: 1036858

See also: 🔍

Entryinfo

Created: 12/25/2016 17:01
Updated: 10/12/2022 17:12
Changes: 12/25/2016 17:01 (74), 07/17/2019 15:01 (7), 10/12/2022 17:12 (4)
Complete: 🔍
Cache ID: 216:E78:103

Be aware that VulDB is the high quality source for vulnerability data.

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