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mIRC Hostname Buffer Overflow Vulnerability
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Secunia Advisory:
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SA9906
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Release Date:
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2003-10-01
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Last Update:
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2003-10-13
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Popularity:
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9,181 views
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Critical:
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Moderately critical
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Impact:
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DoS
System access
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | mIRC 6.x
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Description:
A vulnerability has been reported in mIRC, which can be exploited by malicious servers to compromise a user's system.
The problem is that the response for a "USERHOST" request may only be 110 characters long. If an IRC server sends a longer response to the client, it causes a buffer overflow, which may allow execution of arbitrary code.
A sample exploit has been released.
This has been reported to affect version 6.01 to 6.1.
Solution:
Update to version 6.11:
http://www.mirc.co.uk/get.html
Provided and/or discovered by:
Sylvain Descoteaux
Changelog:
2003-10-13: New version released. Updated "Solution" section.
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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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