Apple Mac OS X up to 10.8 Python resource management

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

A vulnerability, which was classified as problematic, was found in Apple Mac OS X up to 10.8 (Operating System). Affected is an unknown code of the component Python. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on availability. CVE summarizes:

The XML parser (xmlparse.c) in expat before 2.1.0 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via an XML file with many identifiers with the same value.

The weakness was presented 10/22/2013 as APPLE-SA-2013-10-22-3 as confirmed mailinglist post (Apple Security Mailinglist). The advisory is available at lists.apple.com. The mailinglist post contains:

Multiple vulnerabilities existed in python 2.6.7, the most serious of which may lead to decryption of the content of a SSL connection. This update addresses the issues by updating python to version 2.6.8 and applying the patch for CVE-2011-4944 from the Python project. Further information is available via the python site at http://www.python.org/download/releases/
This vulnerability is traded as CVE-2012-0876 since 01/19/2012. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 69696 (Amazon Linux AMI : expat (ALAS-2012-89)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Amazon Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350658 (Amazon Linux Security Advisory for expat: ALAS-2012-089).

Upgrading to version 10.9 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 X-Force (73868) and Tenable (69696). See 10946, 10932, 10931 and 10933 for similar entries.

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  • end of life

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 69696
Nessus Name: Amazon Linux AMI : expat (ALAS-2012-89)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 71503
OpenVAS Name: Debian Security Advisory DSA 2525-1 (expat)
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 10.9

Timelineinfo

01/19/2012 🔍
03/09/2012 +50 days 🔍
06/14/2012 +97 days 🔍
06/21/2012 +7 days 🔍
06/25/2012 +4 days 🔍
07/03/2012 +8 days 🔍
09/04/2013 +428 days 🔍
10/22/2013 +48 days 🔍
10/22/2013 +0 days 🔍
10/23/2013 +1 days 🔍
06/01/2021 +2778 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: APPLE-SA-2013-10-22-3
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2012-0876 (🔍)
OVAL: 🔍
IAVM: 🔍

X-Force: 73868
Vulnerability Center: 35414 - Expat < 2.1 Hash Table Collision Vulnerability Allows Remote DoS via a Specially Crafted XML File, High
SecurityFocus: 52379 - Expat XML Parsing Multiple Remote Denial of Service Vulnerabilities
Secunia: 49504 - Red Hat update for expat, Moderately Critical

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

Entryinfo

Created: 10/23/2013 17:41
Updated: 06/01/2021 08:14
Changes: 10/23/2013 17:41 (80), 04/14/2017 10:13 (7), 06/01/2021 08:14 (3)
Complete: 🔍

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