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Insecure Library Loading
Moderately critical

KVIrc irc:// URI Handler Command Execution Vulnerability

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Release Date:  2007-06-26    Views:  9,997

Secunia Advisory SA25740

Where:

From remote

Impact:

System access

Solution Status:

Vendor Workaround

Software:

CVE Reference(s):

Description


Secunia Research has discovered a vulnerability in KVIrc, which can be exploited by malicious people to compromise a user's system.

The vulnerability is caused due to the "parseIrcUrl()" function in src/kvirc/kernel/kvi_ircurl.cpp not properly sanitising parts of the URI when building the command for KVIrc's internal script system. This can be exploited to inject and execute commands for the KVIrc script system (including the "run" command, which can be leveraged to execute shell commands) by e.g. tricking a user into opening a malicious "irc://" (or similar URI like "irc6://") URI.

Successful exploitation requires that KVIrc is the default handler for "irc://" or similar URIs.

The vulnerability is confirmed in versions 3.2.0 and 3.2.5. Other versions may also be affected.


Solution:
Fixed in the SVN repository.

Further details available to Secunia VIM customers

Provided and/or discovered by:
Stefan Cornelius, Secunia Research

Original Advisory:
Secunia Research:
http://secunia.com/secunia_research/2007-56/

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: KVIrc irc:// URI Handler Command Execution Vulnerability

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