Bug 1546226 (CVE-2018-7053)

Summary:	CVE-2018-7053 irssi: use-after-free when SASL messages are received in unexpected order
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	huzaifas, jskarvad, mmahut, rschiron
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	irssi 1.0.7, irssi 1.1.1	Doc Type:	If docs needed, set a value
Doc Text:	A use-after-free was found in the way Irssi, version 0.8.18 and later, handled out of order SASL messages sent by an IRC server. A remote attacker, who controls an IRC server, could crash the application by exploiting this flaw.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2018-03-30 10:46:02 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1546227, 1562357
Bug Blocks:	1546283

Description Laura Pardo 2018-02-16 16:45:01 UTC

A use-after-free was discovered in Irssi 0.8.18 and later when SASL messages
from a server are received in unexpected order. A remote attacker, in control of
an IRC server, could cause a crash in Irssi clients by leveraging this flaw.

Upstream commit:
https://github.com/irssi/irssi/commit/b8d3301d34f383f039071214872570385de1bb59

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 16:45:32 UTC

Created irssi tracking bugs for this issue:

Affects: fedora-all [bug 1546227]

Comment 4 Riccardo Schirone 2018-03-30 10:45:22 UTC

Statement:

This issue did not affect the versions of Irssi as shipped with Red Hat Enterprise Linux 6 and 7 as they did not include support for SASL.