SECUNIA ADVISORY ID: SA22592
VERIFY ADVISORY: http://secunia.com/advisories/22592/
CRITICAL: Less critical
IMPACT: DoS
WHERE: >From local network
OPERATING SYSTEM:
Microsoft Windows XP Home Edition - http://secunia.com/product/16/
Microsoft Windows XP Professional - http://secunia.com/product/22/
DESCRIPTION: h07 has discovered a vulnerability in Microsoft Windows, which can be exploited by malicious people to cause a DoS (Denial of Service). The vulnerability is caused due to a NULL pointer dereference error in Windows NAT Helper Components (ipnathlp.dll). This can be exploited to crash the service via a specially crafted DNS query. Successful exploitation requires that Internet Connection Sharing is enabled and the query is received from a client on the shared network interface. The vulnerability is confirmed in a fully patched Windows XP SP2 system. Other versions may also be affected.
SOLUTION: Use another way of sharing the Internet connection.
PROVIDED AND/OR DISCOVERED BY: h07
ORIGINAL ADVISORY: http://milw0rm.com/exploits/2672
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