Bug 1546226 – CVE-2018-7053 irssi: use-after-free when SASL messages are received in unexpected order

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Bug 1546226 - (CVE-2018-7053) CVE-2018-7053 irssi: use-after-free when SASL messages are received in unexpected order

Summary:	CVE-2018-7053 irssi: use-after-free when SASL messages are received in unexpe...

Status:	CLOSED NOTABUG

Aliases:	CVE-2018-7053

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:	1562357 1546227
Blocks:	1546283
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Reported:	2018-02-16 11:45 EST by Laura Pardo
Modified:	2018-04-05 10:08 EDT (History)
CC List:	4 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 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 06:46:02 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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Description Laura Pardo 2018-02-16 11:45:01 EST

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 11:45:32 EST

Created irssi tracking bugs for this issue:

Affects: fedora-all [bug 1546227]

Comment 4 Riccardo Schirone 2018-03-30 06:45:22 EDT

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.

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