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KVIrc irc:// URI Handler Command Execution Vulnerability
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Secunia Advisory:
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SA25740
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Release Date:
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2007-06-26
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Popularity:
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4,737 views
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Critical:
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Moderately critical
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Impact:
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System access
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Where:
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From remote
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Solution Status:
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Vendor Workaround
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| Software: | KVIrc 3.x
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| CVE reference: | CVE-2007-2951
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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.
https://svn.kvirc.de/kvirc/changeset/630/#file3
Provided and/or discovered by:
Stefan Cornelius, Secunia Research
Original Advisory:
Secunia Research:
http://secunia.com/secunia_research/2007-56/
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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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