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Microsoft Windows RPCSS Service DCOM Interface Vulnerabilities
Secunia Advisory: SA9692
Release Date: 2003-09-10
Last Update: 2003-10-15
Popularity: 33,272 views

Critical:
Highly critical
Impact: DoS
System access
Where: From local network
Solution Status: Vendor Patch

OS:Microsoft Windows 2000 Advanced Server
Microsoft Windows 2000 Datacenter Server
Microsoft Windows 2000 Professional
Microsoft Windows 2000 Server
Microsoft Windows NT 4.0 Server
Microsoft Windows NT 4.0 Server, Terminal Server Edition
Microsoft Windows NT 4.0 Workstation
Microsoft Windows Server 2003 Datacenter Edition
Microsoft Windows Server 2003 Enterprise Edition
Microsoft Windows Server 2003 Standard Edition
Microsoft Windows Server 2003 Web Edition
Microsoft Windows XP Home Edition
Microsoft Windows XP Professional

Secunia CVSS-2 Score: Available in Secunia business solutions

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Advisory Content (Page 1 of 3)[ 1 ] [ 2 ] [ 3 ]

Description:
Three vulnerabilities have been identified in Microsoft Windows, which can be exploited by malicious people to compromise a vulnerable system or cause a DoS (Denial of Service).

The vulnerabilities affect the DCOM (Distributed Component Object Model) interface within the RPCSS Service and are caused due to boundary errors and an unspecified error when handling certain RPC messages.

Two of the vulnerabilities can be exploited to cause heap overflows allowing execution of arbitrary code on a vulnerable system with "Local System" privileges. The third can be exploited to crash the RPCSS service.

Secunia has constructed a vulnerability test, which can be used to check if you are affected by these issues:
http://secunia.com/MS03-039/

NOTE: Secunia would normally rate these kinds of vulnerabilities as "Moderately critical", since systems only should expose RPC services to other systems on a LAN.

However, since the vulnerabilities are similar to the issue exploited by the Blaster worm, which infected numerous systems, the vulnerabilities have been rated as "Highly critical" instead.

A universal exploit for this vulnerability has been released. Secunia has received credible reports that this exploit may cause a DoS on patched systems by exploiting another vulnerability in the handling of RPC requests:
SA9978

Change Page:
[ 1 ] [ 2 ] [ 3 ]



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