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Category:   Application (Generic)  >   KDE Vendors:   KDE.org
KDE kjs Engine Buffer Overflow Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1015512
SecurityTracker URL:  http://securitytracker.com/id/1015512
CVE Reference:   CVE-2006-0019   (Links to External Site)
Date:  Jan 19 2006
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 3.2.0 up to including 3.5.0
Description:   A vulnerability was reported in KDE in the kjs JavaScript interpreter engine. A remote user can cause arbitrary code to be executed on the target system.

The kjs engine's encodeuri() and decodeuri() functions contain a heap overflow that can be triggered when decoding specially crafted UTF-8 encoded URI sequences. A remote user can create JavaScript in HTML that, when loaded by the target user, will execute arbitrary code on the target user's system.

Maksim Orlovich discovered this vulnerability.

Impact:   A remote user can create HTML that, when loaded by the target user, will execute arbitrary code on the target user's system.
Solution:   The vendor has issued the following patches.

Patch for KDE 3.4.0 - 3.5.0 is available from
ftp://ftp.kde.org/pub/kde/security_patches :

ecc0ec13ce3b06e94e35aa8e937e02bf post-3.4.3-kdelibs-kjs.diff

Patch for KDE 3.2.0 - 3.3.2 is available from
ftp://ftp.kde.org/pub/kde/security_patches :

9bca9b44ca2d84e3b2f85ffb5d30e047 post-3.2.3-kdelibs-kjs.diff

The vendor's advisory is available at:

http://www.kde.org/info/security/advisory-20060119-1.txt

Vendor URL:  www.kde.org/info/security/advisory-20060119-1.txt (Links to External Site)
Cause:   Boundary error
Underlying OS:   Linux (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Jan 19 2006 (Red Hat Issues Fix) KDE kjs Engine Buffer Overflow Lets Remote Users Execute Arbitrary Code   (bugzilla@redhat.com)
Red Hat has released a fix for Red Hat Enterprise Linux 4.



 Source Message Contents

Date:  Thu, 19 Jan 2006 15:50:20 -0500
Subject:  http://www.kde.org/info/security/advisory-20060119-1.txt


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

KDE Security Advisory: kjs encodeuri/decodeuri heap overflow vulnerability
Original Release Date: 2006-01-19
URL: http://www.kde.org/info/security/advisory-20060119-1.txt

0. References
        CVE-2006-0019


1. Systems affected:

        KDE 3.2.0 up to including KDE 3.5.0


2. Overview:

        Maksim Orlovich discovered an incorrect bounds check in kjs,
        the JavaScript interpreter engine used by Konqueror and other
        parts of KDE, that allows a heap based buffer overflow
        when decoding specially crafted UTF-8 encoded URI sequences.


3. Impact:

        Remotely supplied Javascript code can perform a heap overflow
        and crash the web browser or execute arbitrary code.


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:

        Patch for KDE 3.4.0 - 3.5.0 is available from 
        ftp://ftp.kde.org/pub/kde/security_patches :

        ecc0ec13ce3b06e94e35aa8e937e02bf  post-3.4.3-kdelibs-kjs.diff

        Patch for KDE 3.2.0 - 3.3.2 is available from 
        ftp://ftp.kde.org/pub/kde/security_patches :

        9bca9b44ca2d84e3b2f85ffb5d30e047  post-3.2.3-kdelibs-kjs.diff

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=iKoQ
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