Apple Mac OS X up to 10.11.5 libxml2 memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Apple Mac OS X up to 10.11.5. This issue affects some unknown processing of the component libxml2. The manipulation leads to memory corruption. This vulnerability is listed as CVE-2016-4447. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple Mac OS X up to 10.11.5 (Operating System) and classified as critical. This issue affects some unknown processing of the component libxml2. 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:

The xmlParseElementDecl function in parser.c in libxml2 before 2.9.4 allows context-dependent attackers to cause a denial of service (heap-based buffer underread and application crash) via a crafted file, involving xmlParseName.

The weakness was presented 07/18/2016 with Nanyang Technological University as HT206903 as confirmed advisory (Website). The advisory is shared at support.apple.com. The identification of this vulnerability is CVE-2016-4447 since 05/02/2016. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. The advisory points out:

Multiple memory corruption issues were addressed through improved memory handling.

The vulnerability scanner Nessus provides a plugin with the ID 93154 (SUSE SLES11 Security Update : libxml2 (SUSE-SU-2016:1604-1)), 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 43650 (Juniper Junos Multiple vulnerabilities in libxml2 (JSA10916)).

Upgrading to version 10.11.6 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 (93154) and SecurityFocus (BID 90864†). See VDB-79335, VDB-79336, VDB-79337 and VDB-79338 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Support

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
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: 93154
Nessus Name: SUSE SLES11 Security Update : libxml2 (SUSE-SU-2016:1604-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 14611
OpenVAS Name: Amazon Linux Local Check: alas-2016-719
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Upgrade: Mac OS X 10.11.6
Patch: git.gnome.org

Timelineinfo

05/02/2016 🔍
05/23/2016 +21 days 🔍
06/09/2016 +17 days 🔍
07/18/2016 +39 days 🔍
07/18/2016 +0 days 🔍
07/19/2016 +1 days 🔍
08/29/2016 +41 days 🔍
09/06/2022 +2199 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT206903
Organization: Nanyang Technological University
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-4447 (🔍)
GCVE (CVE): GCVE-0-2016-4447
GCVE (VulDB): GCVE-100-89753

OVAL: 🔍

SecurityFocus: 90864 - Libxml2 'xmlParseName' CVE-2016-4447 Remote Denial of Service Vulnerability
SecurityTracker: 1036348

scip Labs: https://www.scip.ch/en/?labs.20150108
See also: 🔍

Entryinfo

Created: 07/19/2016 19:24
Updated: 09/06/2022 09:02
Changes: 07/19/2016 19:24 (59), 03/03/2019 11:09 (25), 09/06/2022 09:02 (4)
Complete: 🔍
Cache ID: 216:25E:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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