IP Masquerading Module 2.2 Vulnerability: Bypassing Firewall Restrictions via IRC DCC Helper

CVE-2001-1056 · HIGH Severity

AV:N/AC:L/AU:N/C:P/I:P/A:P

IRC DCC helper in the ip_masq_irc IP masquerading module 2.2 allows remote attackers to bypass intended firewall restrictions by causing the target system to send a "DCC SEND" request to a malicious server which listens on port 6667, which may cause the module to believe that the traffic is a valid request and allow the connection to the port specified in the DCC SEND request.

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