Bug 287311 (CVE-2007-4569)

Summary: CVE-2007-4569 kdm password-less login vulnerability
Product: [Other] Security Response Reporter: Tomas Hoger <thoger>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: kreilly, than
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2008-01-16 17:24:24 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: 290851, 290861, 290871, 290881, 299731, 299741    
Bug Blocks:    
Attachments:
Description Flags
Upstream patch: post-3.5.7-kdebase-kdm.diff none

Description Tomas Hoger 2007-09-12 06:09:34 UTC 
Dirk Mueller from KDE project has provided us with preview of upcoming KDE
security advisory for kdm:


KDE Security Advisory: KDM passwordless login vulnerability
Original Release Date: 2007-09-19
URL: http://www.kde.org/info/security/advisory-20070919-1.txt

0. References
        CVE-FIXME

1. Systems affected:

	KDM as shipped with KDE 3.3.0 up to including 3.5.7. KDE 3.2.x and
	older and newer versions than KDE 3.5.7 are not affected. 

2. Overview:

	KDM can be tricked into performing a password-less login even for
	accounts with a password set under certain circumstances. It
        requires autologin to be configured and 
        "shutdown with password" enabled.

        This vulnerability was discovered and reported by C. Huijgen.
       
3. Impact:

	KDM might allow a normal user to login as another user or even
	root without properly supplying login credentials.

4. Solution:

        Source code patches have been made available which fix these
        vulnerabilities. Contact your OS vendor / binary package provider
        for information about how to obtain updated binary packages.

5. Patch:

        A patch for KDE 3.3.0 - KDE 3.5.7 is available from
        ftp://ftp.kde.org/pub/kde/security_patches :

	ee6c57046902c5b5a32a4699558baafc  post-3.5.7-kdebase-kdm.diff
Comment 1 Tomas Hoger 2007-09-12 06:11:10 UTC 
Created attachment 193281 [details]
Upstream patch: post-3.5.7-kdebase-kdm.diff
Comment 8 Tomas Hoger 2007-09-12 16:09:22 UTC 
Correct reporter name should be: 'Kees Huijgen'
Comment 10 Tomas Hoger 2007-09-21 06:37:27 UTC 
Issue is public now, lifting embargo:

http://www.kde.org/info/security/advisory-20070919-1.txt
Comment 16 Red Hat Product Security 2008-01-16 17:24:24 UTC 
This issue was addressed in:

Red Hat Enterprise Linux:
  http://rhn.redhat.com/errata/RHSA-2007-0905.html

Fedora:
  https://admin.fedoraproject.org/updates/F7/FEDORA-2007-2361