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Windows Packet Fragmentation Handling Denial of Service Vulnerability
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Secunia Advisory:
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SA12670
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Release Date:
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2004-10-01
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Popularity:
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14,669 views
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Critical:
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Less critical
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Impact:
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DoS
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Where:
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From remote
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Solution Status:
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Unpatched
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| OS: | Microsoft Windows 2000 Advanced Server
Microsoft Windows 2000 Datacenter Server
Microsoft Windows 2000 Professional
Microsoft Windows 2000 Server
Microsoft Windows XP Home Edition
Microsoft Windows XP Professional
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Description:
Gandalf The White has reported a variant of some known vulnerabilities in Windows, which can be exploited by malicious people to cause a DoS (Denial of Service).
The vulnerability is caused due to an error within the processing of fragmented packets. This can be exploited by sending a large number of small fragmented packets where some fragments are missing and then sending the final fragment repeatedly.
Successful exploitation may consume a large amount of CPU resources on a vulnerable system and may cause legitimate fragmented packets to be dropped, if a sufficient amount of attacking systems is used.
Solution:
Secunia is currently not aware of a solution.
Provided and/or discovered by:
Gandalf The White
Other References:
http://digital.net/~gandalf/Rose_Frag_Attack_Explained.txt
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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