TITLE:
Windows Insecure Service Permissions Privilege Escalation

SECUNIA ADVISORY ID:
SA18756

VERIFY ADVISORY:
http://secunia.com/advisories/18756/

CRITICAL:
Less critical

IMPACT:
Privilege escalation

WHERE:
Local system

OPERATING SYSTEM:
Microsoft Windows XP Professional
http://secunia.com/product/22/
Microsoft Windows XP Home Edition
http://secunia.com/product/16/
Microsoft Windows Server 2003 Web Edition
http://secunia.com/product/1176/
Microsoft Windows Server 2003 Standard Edition
http://secunia.com/product/1173/
Microsoft Windows Server 2003 Enterprise Edition
http://secunia.com/product/1174/
Microsoft Windows Server 2003 Datacenter Edition
http://secunia.com/product/1175/

DESCRIPTION:
Sudhakar Govindavajhala and Andrew W. Appel have reported some
security issues in Microsoft Windows, which can be exploited by
malicious, local users to gain escalated privileges.

Insecure SERVICE_CHANGE_CONFIG permissions on the UPnP, NetBT,
SCardSvr, and SSDP services can be exploited to gain escalated
privileges by changing the associated program set to run by an
identified service.

Successful exploitation allows an arbitrary program to be executed
when an affected service is restarted.

The security issues have been reported in Windows XP SP1 (all listed
services) and Windows Server 2003 (NetBT service).

SOLUTION:
The vendor reports that Windows XP SP2 and Windows Server 2003 SP1
are unaffected.

Windows XP Service Pack 2:
http://www.microsoft.com/windowsxp/sp2/default.mspx

Windows Server 2003 Service Pack 1:
http://www.microsoft.com/windowsserver2003/downloads/servicepacks/sp1/default.mspx

Various workarounds are also available in the Microsoft security
advisory.

PROVIDED AND/OR DISCOVERED BY:
Sudhakar Govindavajhala and Andrew W. Appel

ORIGINAL ADVISORY:
Microsoft:
http://www.microsoft.com/technet/security/advisory/914457.mspx

Sudhakar Govindavajhala and Andrew W. Appel:
http://www.cs.princeton.edu/~sudhakar/papers/winval.pdf

OTHER REFERENCES:
US-CERT VU#953860:
http://www.kb.cert.org/vuls/id/953860

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