Vulnerability Alert

PostgreSQL libxml2 Unauthorized Arbitrary File Read Vulnerability

 
Threat Type:CWE-20: Input Validation
IntelliShield ID:26677
Version:7
First Published:2012 August 18 01:59 GMT
Last Published:2013 March 18 20:52 GMT
Port: Not available
CVE:CVE-2012-3489
BugTraq ID:55074
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Mild Damage
CVSS Base:3.5 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:2.6
 
Version Summary:Apple has released an additional security advisory and updated software to address the PostgreSQL libxml2 unauthorized arbitrary file read vulnerability.
 
 
Description
PostgreSQL contains a vulnerability that could allow an authenticated, remote attacker to read arbitrary files on the affected system.

The vulnerability is due to insufficient sanitization of user-supplied Document Type Definition (DTD) documents by the affected software. An authenticated, remote attacker could exploit the vulnerability by convincing a targeted user to open a malicious document with the affected software. Successful exploitation could allow the attacker to gain access to sensitive information on the affected system.

PostgreSQL has confirmed the vulnerability and released software updates.
 
Warning Indicators
The following PostgreSQL versions are affected:
  • Versions 8.3.19 and prior
  • Versions 8.4.12 and prior
  • Versions 9.0.8 and prior
  • Versions 9.1.4 and prior
 
IntelliShield Analysis
To exploit the vulnerability, the attacker may provide a file to the user and use misleading instructions and language to persuade the user to open the file with the affected application.
 
Vendor Announcements
PostgresQL has released a security update at the following link: 1407

Apple has released security advisories at the following links: HT5533 and HT5672

FreeBSD has released a VuXML document at the following link: multiple vulnerabilities

Oracle has released a security notification at the following link: CVE-2012-3489

Red Hat has released an official CVE statement and a security advisory for bug 849173 at the following links: CVE-2012-3489 and RHSA-2012-1263
 
Impact
An authenticated, remote attacker could exploit the vulnerability to gain read access to arbitrary files on the affected system. The attacker could use the information to launch further attacks against the targeted system.
 
Technical Information
The vulnerability is in the XML functionality provided by the libxml2 library. This library could perform insufficient sanitization on user-supplied DTD documents and could allow the execution of arbitrary scripts.

An authenticated, remote attacker could exploit the vulnerability by convincing a targeted user to open a malicious DTD document with an application that uses the affected database library. If successful, the attacker could read arbitrary files on the affected system.
 
Safeguards
Administrators are advised to apply the appropriate updates.

Users are advised not to open unsolicited e-mail attachments. Users should verify that attachments are safe before opening them.

Users should verify that unsolicited links are safe to follow.
 
Patches/Software
PostgreSQL has released updated versions at the following links: Apple has released updated software at the following link: Mac OS X Server version 2.1.1

Apple users are advised to acquire updates via software update preferences.

CentOS packages can be updated using the up2date or yum command.

FreeBSD releases ports collection updates at the following link: Ports Collection Index

Oracle has released patches for registered users at the following links:

SPARC
Solaris 10 with patch 138822-11, 138824-11, and 138826-11

Intel
Solaris 10 with patch 138823-11, 138825-11, and 138827-11

Red Hat has released updated software for registered subscribers at the following link: Red Hat Network. Red Hat packages can be updated on Red Hat Enterprise Linux versions 5 and later using the yum tool.
 
Alert History
 

Version 6, October 10, 2012, 1:22 PM: Oracle has released a security notification and patches to address the PostgreSQL libxml2 unauthorized arbitrary file read vulnerability.

Version 5, October 4, 2012, 2:19 PM: Apple has released a security advisory and updated software to address the PostgreSQL libxml2 unauthorized arbitrary file read vulnerability.

Version 4, September 18, 2012, 11:18 AM: CentOS has released updated packages to address the PostgreSQL libxml2 unauthorized arbitrary file read vulnerability.

Version 3, September 14, 2012, 4:55 PM: Red Hat has released a security advisory and updated packages to address the PostgreSQL libxml2 unauthorized arbitrary file read vulnerability.

Version 2, August 20, 2012, 9:13 AM: FreeBSD has released a VuXML document and updated ports collection to address the PostgreSQL libxml2 unauthorized arbitrary file read vulnerability.

Version 1, August 18, 2012, 9:59 AM: PostgreSQL contains a vulnerability that could allow an authenticated, remote attacker to read arbitrary files on the affected system. Updates are available.


Product Sets
 
The security vulnerability applies to the following combinations of products.

Primary Products:
Postgre SQL IncPostgreSQL Original Release Base | 8.3.0 Base | 8.3.1 Base | 8.3.2 Base | 8.3.3 Base | 8.3.4 Base | 8.3.5 Base | 8.3.6 Base | 8.3.7 Base | 8.3.8 Base | 8.3.9 Base | 8.3.10 Base | 8.3.11 Base | 8.3.12 Base | 8.3.13 Base | 8.3.14 Base | 8.3.15 Base | 8.3.16 Base | 8.3.17 Base | 8.3.18 Base | 8.3.19 Base | 8.4.0 Base | 8.4.1 Base | 8.4.2 Base | 8.4.3 Base | 8.4.4 Base | 8.4.5 Base | 8.4.6 Base | 8.4.7 Base | 8.4.8 Base | 8.4.9 Base | 8.4.10 Base | 8.4.12 Base | 8.4.13 Base | 8.4.11 Base | 9.0.0 Base | 9.0.1 Base | 9.0.2 Base | 9.0.3 Base | 9.0.7 Base | 9.0.8 Base | 9.0.4 Base | 9.0.5 Base | 9.1.4 Base | 9.0.6 Base | 9.1.0 Base | 9.1.1 Base | 9.1.2 Base | 9.1.3 Base

Associated Products:
AppleMac OS X 10.8 Base, .1 | 10.8.1 Base
AppleMac OS X Server 2.0 Base | 2.1 Base | 10.6.8 Base | 10.7 Base | 10.7.1 Base | 10.7.2 Base | 10.7.3 Base | 10.7.4 Base | 10.7.5 Base | 10.8.0 Base | 10.8.1 Base
CentOS ProjectCentOS 5 .0 i386, .0 x86_64, .1 i386, .1 x86_64, .2 i386, .2 x86_64, .3 i386, .3 x86_64, .4 i386, .4 x86_64, .5 i386, .5 x86_64
FreeBSD ProjectFreeBSD 6.3 Base | 6.4 Base | 7.0 Base | 7.1 Base | 7.2 Base | 7.3 Base | 7.4 Base | 8.0 Base | 8.1 Base | 8.2 Base | 8.3 Base | 9.0 Base
Red Hat, Inc.Red Hat Enterprise Linux 5 IA-32, IA-64, PPC, s390x, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Desktop 5 IA-32, x86_64 | 6 IA-32, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Desktop Workstation 5 IA-32, x86-64
Red Hat, Inc.Red Hat Enterprise Linux HPC Node 6 x86_64
Red Hat, Inc.Red Hat Enterprise Linux Server 6 IA-32, PPC, s390x, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Workstation 6 IA-32, x86_64
Sun Microsystems, Inc.Solaris 10 sparc, x64/x86




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