Bug 21717

Summary:	gdm new security issue CVE-2017-12164
Product:	Mageia	Reporter:	David Walser <luigiwalser>
Component:	Security	Assignee:	QA Team <qa-bugs>
Status:	RESOLVED FIXED	QA Contact:	Sec team <security>
Severity:	major
Priority:	Normal	CC:	marja11, sysadmin-bugs, tmb
Version:	6	Keywords:	advisory, validated_update
Target Milestone:	---
Hardware:	All
OS:	Linux
Whiteboard:	MGA6-64-OK MGA6-32-OK
Source RPM:	gdm-3.24.2-1.mga6.src.rpm	CVE:
Status comment:

Description David Walser 2017-09-16 05:03:46 CEST

Fedora has issued an advisory today (September 15):
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/CUDXKEMLQPVFJP52PBLEOLKUMYUY25UJ/

The issue is fixed upstream in 3.24.3.

Mageia 5 is not affected.

Marja Van Waes 2017-09-16 21:21:53 CEST

Assignee: bugsquad => gnome
CC: (none) => marja11

David Walser 2017-09-16 22:07:29 CEST

QA Contact: (none) => security
Component: RPM Packages => Security

Comment 1 David Walser 2018-01-01 19:34:29 CET

Advisory:
========================

Updated gdm packages fix security vulnerability:

A flaw was discovered in the gdm where gdm greeter was no longer setting the
ran_once boolean during autologin. If autologin was enable for a victim, an
attacker could simply select 'login as another user' to unlock their screen
(CVE-2017-12164).

References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12164
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/CUDXKEMLQPVFJP52PBLEOLKUMYUY25UJ/
========================

Updated packages in core/updates_testing:
========================
gdm-3.24.3-1.mga6
libgdm1-3.24.3-1.mga6
libgdm-gir1.0-3.24.3-1.mga6
libgdm-devel-3.24.3-1.mga6

from gdm-3.24.3-1.mga6.src.rpm

Assignee: gnome => qa-bugs

Comment 2 Thomas Backlund 2018-01-03 13:00:51 CET

Been running this for some days without issues

Whiteboard: (none) => MGA6-64-OK
CC: (none) => tmb

Comment 3 Thomas Backlund 2018-01-03 13:11:27 CET

advisory added to svn

Keywords: (none) => advisory

Comment 4 Thomas Backlund 2018-01-03 19:24:00 CET

Tested 32bit in virtualbox.

validating.

Whiteboard: MGA6-64-OK => MGA6-64-OK MGA6-32-OK
Keywords: (none) => validated_update
CC: (none) => sysadmin-bugs

Comment 5 Mageia Robot 2018-01-03 19:53:39 CET

An update for this issue has been pushed to the Mageia Updates repository.

https://advisories.mageia.org/MGASA-2018-0056.html

Status: NEW => RESOLVED
Resolution: (none) => FIXED