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Vulnerability Alert

PostgreSQL REPLICATION Privilege Security Bypass Vulnerability

 
Threat Type:CWE-264: Permissions, Privileges, and Access Control
IntelliShield ID:28835
Version:5
First Published:2013 April 05 14:03 GMT
Last Published:2013 September 18 15:08 GMT
Port: Not available
CVE:CVE-2013-1901
BugTraq ID:58878
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Mild Damage
CVSS Base:5.0 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:3.7
 
Version Summary:Apple has released an additional security advisory and updated software to address the PostgreSQL REPLICATION privilege security bypass vulnerability.
 
 
Description
PostgreSQL contains a vulnerability that could allow an unauthenticated, remote attacker to bypass security restrictions on a targeted system.

The vulnerability is due to improper handling of the security restriction related to the REPLICATION privilege by the affected software. An unauthenticated, remote attacker could exploit the vulnerability by transmitting crafted queries to the targeted system. Successful exploitation could allow the attacker to gain elevated privileges and execute arbitrary commands on the system.

PostgreSQL has confirmed the vulnerability and released software updates.
 
Warning Indicators
The following versions are affected:
  • PostgreSQL versions prior to 9.0.13
  • PostgreSQL versions prior to 9.1.9
  • PostgreSQL versions prior to 9.2.4
 
IntelliShield Analysis
To exploit the vulnerability, the attacker may need to access trusted, internal networks to send a crafted query to the targeted system. This access requirement could reduce the likelihood of a successful exploit.
 
Vendor Announcements
PostgreSQL has released a security update at the following link: CVE-2013-1901

Apple has released security advisories at the following links: HT5880 and HT5892

FreeBSD has released a VuXML document at the following link: PostgreSQL -- anonymous remote access data corruption vulnerability

VMware has released a security advisory at the following link: VMSA-2013-0005
 
Impact
An unauthenticated, remote attacker could exploit the vulnerability to bypass security restrictions to gain elevated privileges and could execute commands that could interfere with in-progress backups.
 
Technical Information
The vulnerability is in the pg_start_backup() and pg_stop_backup() functions. While handling REPLICATION privileges, the functions could fail to limit privileged access to the current user. This may allow the user to execute arbitrary commands with the REPLICATION privileges.

An unauthenticated, remote attacker could exploit the vulnerability by transmitting crafted queries to a targeted system. Successful exploitation could allow the attacker to gain elevated privileges and execute arbitrary commands that could interfere with in-progress backups.
 
Safeguards
Administrators are advised to apply the appropriate updates.

Administrators are advised to allow only trusted users to have network access.

Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.

Administrators are advised to monitor affected systems.
 
Patches/Software
PostgreSQL has released updated versions at the following links: Apple has released updated software at the following links:

Mac OS X and Mac OS X Server 10.7.5
Security Update 2013-004 (Lion)
Security Update 2013-004 Server (Lion)

Mac OS X Mountain Lion 10.8.5
OS X Mountain Lion Update 10.8.5
OS X Mountain Lion Update 10.8.5 (Combo)

OS X Server v2.2.2 Update

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

VMware has released updated software at the following links:
 
Alert History
 

Version 4, September 16, 2013, 2:10 PM: Apple has released a security advisory and updated software to address the PostgreSQL REPLICATION privilege security bypass vulnerability.

Version 3, April 8, 2013, 2:30 PM: FreeBSD has released a VuXML document and updated ports collection to address the PostgreSQL REPLICATION privilege security bypass vulnerability.

Version 2, April 8, 2013, 2:05 PM: FreeBSD has released a security advisory and updated patches to address the PostgreSQL REPLICATION privilege security bypass vulnerability.

Version 1, April 5, 2013, 2:03 PM: PostgreSQL contains a vulnerability that could allow an unauthenticated, remote attacker to bypass security restrictions on a targeted system. Updates are available.



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

Primary Products:
Postgre SQL IncPostgreSQL 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 | 9.0.9 Base | 9.0.10 Base | 9.0.11 Base | 9.0.12 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 | 9.1.5 Base | 9.1.6 Base | 9.1.8 Base | 9.1.7 Base | 9.2.0 Base | 9.2.3 Base | 9.2.1 Base | 9.2.2 Base

Associated Products:
AppleMac OS X 10.7.5 Base | 10.8 Base | 10.8.1 Base | 10.8.2 Base | 10.8.3 Base | 10.8.4 Base | 10.8.5 Base
AppleMac OS X Server 10.7.5 Base
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 | 9.1 Base
VMware, Inc.vFabric Postgres 9.1.5 Base | 9.1.6 Base | 9.1.7 Base | 9.1.8 Base | 9.2.1 Base | 9.2.2 Base | 9.2.3 Base




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