Related Vulnerabilities: CVE-2017-15721  

Certain incorrectly formatted DCC CTCP messages could cause NULL-pointer dereference in Irssi < 1.0.5. This is a separate, but similar issue to CVE-2017-9468. To be exploited, this issue requires a broken IRCd or control over the IRCd.

Severity Medium

Remote Yes

Type Denial of service

Description

Certain incorrectly formatted DCC CTCP messages could cause NULL-pointer dereference in Irssi < 1.0.5. This is a separate, but similar issue to CVE-2017-9468. To be exploited, this issue requires a broken IRCd or control over the IRCd.

AVG-461 irssi 1.0.4-3 1.0.5-1 High Fixed

22 Oct 2017 ASA-201710-30 AVG-461 irssi High multiple issues

https://irssi.org/security/irssi_sa_2017_10.txt
https://github.com/irssi/irssi/commit/9f0dc4766c7aa80e34aa2cde94323fb49971abdf