CVE-2017-5193

Publication date 6 January 2017

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

The nickcmp function in Irssi before 0.8.21 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a message without a nick.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
irssi	16.10 yakkety	Fixed 0.8.19-1ubuntu2.1
	16.04 LTS xenial	Fixed 0.8.19-1ubuntu1.3
	14.04 LTS trusty	Fixed 0.8.15-5ubuntu3.1
	12.04 LTS precise	Fixed 0.8.15-4ubuntu3.1

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
irssi	Upstream: 6c6c42e

Severity score breakdown

Parameter	Value
Base score	7.5 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-3184-1
Irssi vulnerabilities
1 February 2017