VULNERABILITY INTELLIGENCE

CVE-2001-1056

CVSS score7.5 HIGH
EPSS probability2.44%
CISA KEVNot currently listed
Published2001-07-30
Last modified2026-06-16
CVSS vectorAV:N/AC:L/Au:N/C:P/I:P/A:P

Description

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.

Primary references