Bug 1227098 – CVE-2015-3213 Gnome clutter: screenlock bypass by performing certain mouse gestures

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Bug 1227098 - (CVE-2015-3213) CVE-2015-3213 Gnome clutter: screenlock bypass by performing certain mouse gestures

Summary:	CVE-2015-3213 Gnome clutter: screenlock bypass by performing certain mouse ge...

Status:	CLOSED ERRATA

Aliases:	CVE-2015-3213

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

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

URL:
Whiteboard:	impact=moderate,public=20150602,repor...
Keywords:	Security

Depends On:	1227103 1227104
Blocks:	1227100
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Reported:	2015-06-01 18:52 EDT by Kurt Seifried
Modified:	2015-07-27 19:43 EDT (History)
CC List:	4 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:	A flaw was found in the way clutter processed certain mouse and touch gestures. An attacker could use this flaw to bypass the screen lock.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2015-07-27 19:43:05 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
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External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2015:1510	normal	SHIPPED_LIVE	Moderate: clutter security update	2015-07-27 22:26:52 EDT

Groups: None (edit)

Description Kurt Seifried 2015-06-01 18:52:37 EDT

Ray Strode of Red Hat reports:

Clutter contains APIs for recognizing finger and mouse movement based gestures.
GNOME Shell uses these APIs to recognize when the user lifts the "screen shield"
to initiate the screen unlock process (where a password would normally be 
entered). 

A bug in clutter's gesture handling code leads to a crash in some cases when 
the user performs gestures. This crash can lead to screen lock bypass. The bug 
was fixed upstream in clutter 1.16.2

External reference:
https://bugzilla.gnome.org/show_bug.cgi?id=749847

Comment 4 errata-xmlrpc 2015-07-27 18:27:03 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2015:1510 https://rhn.redhat.com/errata/RHSA-2015-1510.html

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