KDE Security Advisory: Konqueror Java Vulnerability
Original Release Date: 2004-12-20
URL: http://www.kde.org/info/security/advisory-20041220-1.txt
0. References
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1145
http://www.heise.de/security/dienste/browsercheck/tests/java.shtml
1. Systems affected:
All versions of KDE up to KDE 3.3.1 inclusive. KDE 3.3.2 is not
affected.
2. Overview:
Two flaws in the Konqueror webbrowser make it possible to by pass
the sandbox environment which is used to run Java-applets.
One flaw allows access to restricted Java classes via JavaScript,
making it possible to escalate the privileges of the Java-applet.
The other problem is that Konqueror fails to correctly restrict
access to certain Java classes from the Java-applet itself.
The Common Vulnerabilities and Exposures project (cve.mitre.org)
has assigned the name CAN-2004-1145 to this issue.
3. Impact:
When a user has Java enabled in Konqueror and visits a malicious
website, the website can run a Java-applet and obtain escalated
privileges allowing reading and writing of arbitrary files with
the privileges of the user.
4. Solution:
Upgrade to KDE 3.3.2
A backport has been made available for older versions which fixes
this vulnerability. Contact your OS vendor / binary package provider
for information about how to obtain updated binary packages.
5. Patch:
For KDE 3.2.3 a backport of the new Java handling is available from
ftp://ftp.kde.org/pub/kde/security_patches :
7fc001d010c640738ed7d2fe347f002d post-3.2.3-kdelibs-khtml-java.tar.bz2
6. Time line and credits:
24/11/2004 security@xxxxxxx contacted by heise Security
29/11/2004 Fixed in KDE CVS by Koos Vriezen
14/12/2004 Backport for KDE 3.2.3
20/12/2004 KDE Advisory released
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