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Insecure Library Loading
Not critical

Microsoft Windows TCP Packet Information Disclosure

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Release Date:  2003-09-22    Views:  19,393

Secunia Advisory SA9799

Where:

From remote

Impact:

Exposure of sensitive information

Solution Status:

Unpatched

CVE Reference(s):

No CVE references.

Description


A vulnerability has been identified in the handling of TCP packets in Microsoft Windows 2000 and Windows XP, which potentially can expose sensitive information.

The problem is that Windows under some circumstances doesn't clear the "URG" flag of TCP packets. When this happens Windows will not set the correct value for the 16 bit "URG" pointer value but may instead include random data from other data transfers.

This behaviour has been reported to affect Windows 2000 and XP with all the latest patches and updates. There is no report that this behaviour can be exploited unless data transfers are occuring at the same time.

This issue has been rated as "Not critical" since only a small amount of data may be revealed and because the issue can't be triggered by malicious people.


Solution:
There's no effective solution available.

Further details available to Secunia VIM customers

Provided and/or discovered by:
Michal Zalewski

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Microsoft Windows TCP Packet Information Disclosure

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