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Exploit:Win/MSRPC.RPRN.RCE!CVE-2010-2729

Severity rating
Critical

Class/Type
Exploit

Discovered date
2010-09-14T00:00:00

Attack vector
Remote

Authentication required
No

Public exploits available
Yes

Signature detection
Medium



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Description

A remote code execution vulnerability exists in the Windows Print Spooler that could allow a remote, unauthenticated attacker to execute arbitrary code on an affected system.



Impact

An attacker who successfully exploited this vulnerability could run arbitrary code on a user's system with system privileges. An attacker who successfully exploited this vulnerability could take complete control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts.



Technical details (analysis)

The Print Spooler service is an executable file that is installed as a service. The spooler is loaded when the operating system starts, and it continues to run until the operating system is shut down. The Print Spooler service manages the printing process. This vulnerability is due to the Windows Print Spooler insufficiently restricting where a user has permissions to print to a file. An attacker could exploit this vulnerability by crafting a malicious print request, and sending it to a vulnerable machine exposing its Print Spooler interface over RPC. The victim machine would not properly validate whether the remote user has sufficient permissions, and permit the remote attacker to create a file in a Windows system directory. When dropped in particular locations, these files may be automatically executed by the system.



Affected software

Windows XP Service Pack 3
Windows XP Professional x64 Edition Service Pack 2
Windows Server 2003 Service Pack 2
Windows Server 2003 x64 Edition Service Pack 2
Windows Server 2003 with SP2 for Itanium-based Systems
Windows Vista Service Pack 1 and Windows Vista Service Pack 2
Windows Vista x64 Edition Service Pack 1 and Windows Vista x64 Edition Service Pack 2
Windows Server 2008 for 32-bit Systems and Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for x64-based Systems and Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for Itanium-based Systems and Windows Server 2008 for Itanium-based Systems Service Pack 2
Windows 7 for 32-bit Systems
Windows 7 for x64-based Systems
Windows Server 2008 R2 for x64-based Systems
Windows Server 2008 R2 for Itanium-based Systems



Non-affected software

All applications not on the affected list.



References




Solutions




NIS signature

Name: Exploit:Win/MSRPC.RPRN.RCE!CVE-2010-2729
Release Date: 2010-09-14T00:00:00



Known false positives

No known false positives at this time.



Work-arounds

Block ports associated with RPC at the firewall
Disable printer sharing