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TITLE:
cPanel Script Insertion and Cross-Site Scripting Vulnerabilities

SECUNIA ADVISORY ID:
SA33990

VERIFY ADVISORY:
http://secunia.com/advisories/33990/

DESCRIPTION:
mckt has reported some vulnerabilities in cPanel, which can be
exploited by malicious, local users to conduct script insertion
attacks and by malicious people to conduct cross-site scripting
attacks.

1) Input via the ".contactemail" file in a user's home directory is
not properly sanitised before being used. This can be exploited to
insert arbitrary HTML and script code in a user's browser session in
context of an affected site if a malicious email is displayed.

2) Input via the URL to the "scripts2/confdkillproc" script is not
properly sanitised before being returned to the user. This can be
exploited to execute arbitrary HTML and script code in a user's
browser session in context of an affected site.

Note: Additionally, the application allows users to perform certain
actions via HTTP requests without performing any validity checks to
verify the requests. This can be exploited to e.g. change passwords
or install other software versions by tricking the user into visiting
a malicious web site.

Successful exploitation of these cross-site request forgery
vulnerabilities requires that the "XSRF protection" within the WHM's
Tweak Settings under the Security section is disabled.

SOLUTION:
Fixed in the Edge and Current builds version 11.24.4 and 11.24.7 with
a build ID greater than 34195.
http://layer2.cpanel.net/

Reportedly, this will be fixed in all public builds soon.

PROVIDED AND/OR DISCOVERED BY:
mckt

ORIGINAL ADVISORY:
1) http://skeptikal.org/index.php?entry=entry080805-140000
2) http://skeptikal.org/index.php?entry=entry080809-180834

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