Use-after-free in Irssi - CVE-2017-5194
Published: March 3, 2017 / Updated: July 18, 2020
Vulnerability identifier: #VU31439
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-5194
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error when processing an invalid nick message. A remote attackers can cause a denial of service (crash).
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
Affected software
Irssi
Gentoo Linux
Arch Linux
Fedora
Slackware Linux
irssi (Alpine package)
irssi
Gentoo Linux
Arch Linux
Fedora
Slackware Linux
irssi (Alpine package)
irssi
How to mitigate CVE-2017-5194
Update to version 0.8.21.
Irssi - update to 0.8.21
irssi (Alpine package) - update to 0.8.21-r0
irssi - addressed in versions 0.8.21-1.el5, 0.8.21-1.fc24, 0.8.21-1.fc25
irssi (Alpine package) - update to 0.8.21-r0
irssi - addressed in versions 0.8.21-1.el5, 0.8.21-1.fc24, 0.8.21-1.fc25