Arch Linux Security Advisory ASA-201907-1 ========================================= Severity: High Date : 2019-07-01 CVE-ID : CVE-2019-13045 Package : irssi Type : arbitrary code execution Remote : Yes Link : https://security.archlinux.org/AVG-999 Summary ======= The package irssi before version 1.2.1-1 is vulnerable to arbitrary code execution. Resolution ========== Upgrade to 1.2.1-1. # pacman -Syu "irssi>=1.2.1-1" The problem has been fixed upstream in version 1.2.1. Workaround ========== Disable SASL authentication. Description =========== Irssi 1.0.x before 1.0.8, 1.1.x before 1.1.3, and 1.2.x before 1.2.1, when SASL is enabled, has a use after free when sending SASL login to the server. Impact ====== A remote attacker in position of man-in-the-middle or controlling the IRC server might be able to crash or execute arbitrary code on an affected host. References ========== https://irssi.org/security/irssi_sa_2019_06.txt https://www.openwall.com/lists/oss-security/2019/06/29/1 https://github.com/irssi/irssi/commit/d23b0d22cc611e43c88d99192a59f413f951a9... https://security.archlinux.org/CVE-2019-13045