KDE Security Advisory: Konqueror Java Vulnerability

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 [email protected] 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