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XChat /dns Reverse Lookup Response Arbitrary Command Execution

Medium

Synopsis

The remote host is vulnerable to an flaw which allows attackers to execute arbitrary commands.

Description

The remote host is running the XChat IRC client. X-Chat versions 1.8.8 and earlier could allow a remote attacker to execute arbitrary commands on the X-Chat client. A vulnerability regarding the lack of filtering in the EXECL command could allow an attacker to send a specially crafted /dns query that would return a malformed response from the server to execute arbitrary commands on the X-Chat client.

Solution

Upgrade or patch according to vendor recommendations.