Bug 1546280 – CVE-2018-7050 irssi: Null pointer dereference when an "empty" nick joins a channel

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Bug 1546280 - (CVE-2018-7050) CVE-2018-7050 irssi: Null pointer dereference when an "empty" nick joins a channel

Summary:	CVE-2018-7050 irssi: Null pointer dereference when an "empty" nick joins a ch...

Status:	NEW

Aliases:	CVE-2018-7050

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	low Severity low
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=low,public=20180213,reported=2...
Keywords:	Security

Depends On:	1563159 1563161 1563162 1546315
Blocks:	1546283
	Show dependency tree / graph

Reported:	2018-02-16 14:27 EST by Laura Pardo
Modified:	2018-08-27 05:54 EDT (History)
CC List:	3 users (show)

See Also:
Fixed In Version:	irssi 1.0.7, irssi 1.1.1
Doc Type:	If docs needed, set a value
Doc Text:	A NULL pointer dereference was found in Irssi when an "empty" nick joins a channel. A remote attacker, who can control an IRC server, could crash IRC clients by leveraging this vulnerability.
Story Points:	---
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Environment:
Last Closed:
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Regression:	---
Mount Type:	---
Documentation:	---
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oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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Description Laura Pardo 2018-02-16 14:27:58 EST

A NULL pointer dereference was found in Irssi in complete_from_nicklist function
of chat-completion.c file, when an "empty" nick joins a channel. A remote
attacker, who can control an IRC server, could crash IRC clients by leveraging
this vulnerability.

Upstream patch:
https://github.com/irssi/irssi/commit/36564717c9f701e3a339da362ab46d220d27e0c1

References:
https://irssi.org/security/irssi_sa_2018_02.txt

Comment 1 Laura Pardo 2018-02-16 15:12:06 EST

Created irssi tracking bugs for this issue:

Affects: fedora-all [bug 1546315]

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