KDE DCOP Bug Lets Local Users Deny Service
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SecurityTracker Alert ID: 1013453 |
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SecurityTracker URL: http://securitytracker.com/id/1013453
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CVE Reference:
CAN-2005-0396
(Links to External Site)
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Date: Mar 16 2005
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Impact:
Denial of service via local system
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): prior to 3.4
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Description:
A denial of service vulnerability was reported in the KDE Desktop Communication Protocol (DCOP) daemon. A local user can cause the dcopserver to hang.
A local user can stall the DCOP authentication process to cause the dcopserver, which may be used by other users on the system, to lock up. Desktop functionality such as browsing and launching applications may be adversely and signifcantly affected.
The vendor was notified on February 21, 2005.
Sebastian Krahmer of the SUSE LINUX Security Team reported this vulnerability.
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Impact:
A local user can cause the dcopserver to hang, which may affected desktop functionality such as browsing and launching applications for other users.
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Solution:
A fixed version (3.4) has been issued.
A patch for KDE 3.1.x is available from ftp://ftp.kde.org/pub/kde/security_patches
377c49d8224612fbf09f70f3c09d52f5 post-3.1.5-kdelibs-dcop.patch
A patch for KDE 3.2.x is available from ftp://ftp.kde.org/pub/kde/security_patches
0948701bffb082c65784dc8a2b648ef0 post-3.2.3-kdelibs-dcop.patch
A patch for KDE 3.3.x is available from ftp://ftp.kde.org/pub/kde/security_patches
7309e259ae1f29be08bbb70e580da3fb post-3.3.2-kdelibs-dcop.patch
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Vendor URL: www.kde.org/info/security/advisory-20050316-1.txt (Links to External Site)
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Cause:
State error
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Underlying OS:
Linux (Any)
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Message History:
This archive entry has one or more follow-up message(s) listed below.
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Source Message Contents
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Date: Wed, 16 Mar 2005 09:08:57 -0500
Subject: http://www.kde.org/info/security/advisory-20050316-1.txt
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
KDE Security Advisory: Local DCOP denial of service vulnerability
Original Release Date: 20050316
URL: http://www.kde.org/info/security/advisory-20050316-1.txt
0. References
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0396
1. Systems affected:
All KDE version prior to KDE 3.4 on systems where multiple users
have access.
2. Overview:
Sebastian Krahmer of the SUSE LINUX Security Team reported a local
denial of service vulnerability in KDE's Desktop Communication
Protocol (DCOP) daemon better known as dcopserver.
A local user can lock up the dcopserver of arbitrary other users
on the same machine by stalling the DCOP authentication process.
Although it is not possible to by pass the authentication process
this way, it can cause a significant reduction in desktop
functionality for the affected users.
The Common Vulnerabilities and Exposures project (cve.mitre.org)
has assigned the name CAN-2005-0396 to this issue.
3. Impact:
A local user can lock up the dcopserver of arbitrary other users
on the same machine. This can cause a significant reduction in
desktop functionality for the affected users including, but not
limited to, the inability to browse the internet and the inability
to start new applications.
4. Solution:
Upgrade to KDE 3.4.
For older versions of KDE 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 3.1.x is available from
ftp://ftp.kde.org/pub/kde/security_patches
377c49d8224612fbf09f70f3c09d52f5 post-3.1.5-kdelibs-dcop.patch
A patch for KDE 3.2.x is available from
ftp://ftp.kde.org/pub/kde/security_patches
0948701bffb082c65784dc8a2b648ef0 post-3.2.3-kdelibs-dcop.patch
A patch for KDE 3.3.x is available from
ftp://ftp.kde.org/pub/kde/security_patches
7309e259ae1f29be08bbb70e580da3fb post-3.3.2-kdelibs-dcop.patch
6. Time line and credits:
21/02/2005 KDE Security informed by SUSE LINUX.
21/02/2005 Patches applied to KDE CVS.
02/03/2005 Vendors notified
16/03/2005 KDE Security Advisory released.
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