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Vulnerability Alert

Microsoft Windows Print Spooler Arbitrary Code Execution Vulnerability

 
Threat Type:CWE-119: Buffer Errors
IntelliShield ID:27738
Version:1
First Published:2013 January 08 13:14 GMT
Last Published:2013 January 08 13:14 GMT
Port: Not available
CVE:CVE-2013-0011
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Moderate Damage
CVSS Base:10.0 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:7.4
Related Resources:
View related Applied Mitigation BulletinView related Event Response
 
 
Version Summary:Microsoft Windows Print Spooler service contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code. Updates are available.
 
 
Description
Microsoft Windows Print Spooler service contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code.

The vulnerability exists because the affected Print Spooler service on a targeted device improperly handles specially crafted responses to print spooler network requests. An unauthenticated, remote attacker could exploit this vulnerability by sending crafted responses to the affected software. If successful, the attacker could execute arbitrary code with SYSTEM privileges, resulting in a complete compromise of the system.

Microsoft has confirmed the vulnerability in a security bulletin and released software updates.
 
Warning Indicators
The following Microsoft Platforms are vulnerable:
  • Windows 7 for 32-bit Systems SP1 and prior
  • Windows 7 for x64-based Systems SP1 and prior
  • Windows Server 2008 R2 for x64-based Systems SP1 and prior
  • Windows Server 2008 R2 for Itanium-based Systems SP1 and prior
 
IntelliShield Analysis
To exploit the vulnerability, the attacker must send malicious requests to the targeted system, likely requiring the attacker to have access to trusted, internal networks. This access requirement limits the likelihood of a successful exploit.

Microsoft has corrected this vulnerability by modifying the way the Windows Print Spooler service handles specially crafted responses.

The Cisco Applied Intelligence team has created an Applied Mitigation Bulletin to address vulnerabilities that Microsoft disclosed in the January 2013 security bulletin release. This Cisco bulletin, which assists administrators in identifying or mitigating these vulnerabilities using Cisco devices, is available at the following link: Cisco Applied Mitigation Bulletin: Microsoft Security Bulletin Release for January 2013
 
Vendor Announcements
Microsoft has released a security bulletin at the following link: MS13-001
 
Impact
An unauthenticated, remote attacker could exploit this vulnerability to execute arbitrary code on the targeted system with elevated privileges, possibly resulting in a complete system compromise.
 
Technical Information
The vulnerability exists because the affected Print Spooler service on a targeted device improperly handles specially crafted responses to print spooler network requests.

An unauthenticated, remote attacker could exploit this vulnerability by sending crafted network printer responses to print spooler network requests. When the software processes the malicious responses, the attacker could execute arbitrary code with SYSTEM privileges, resulting in a complete compromise of the system.
 
Safeguards
Administrators are advised to apply the appropriate updates.

Administrators may consider disabling the Print Spooler service if appropriate.

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

Administrators may consider using the Microsoft Baseline Security Analyzer (MBSA) scan tool to identify common security misconfigurations and missing security updates on system endpoints.

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 critical systems.
 
Patches/Software
Microsoft customers can obtain updates directly by using the links in the security bulletin. These updates are also distributed by Windows automatic update features and available on the Microsoft Update service. Microsoft Windows Server Update Services (WSUS), Systems Management Server, and System Center Configuration Manager can assist administrators in deploying software updates.
 
Alert History
 
Initial Release


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

Primary Products:
Microsoft, Inc.Windows 7 for 32-bit systems Base, SP1 | for x64-based systems Base, SP1
Microsoft, Inc.Windows Server 2008 R2 x64-Based Systems Edition Base, SP1 | Itanium-Based Systems Edition Base, SP1

Associated Products:
N/A




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