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A new version (0.9.0.0 - Release Candidate 1) of the free Secunia PSI
has been released. The new version includes many new and advanced
features, which makes it even easier to stay patched.

Download and test it today:
https://psi.secunia.com/

Read more about this new version:
https://psi.secunia.com/?page=changelog

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TITLE:
Serendipity Script Insertion and Cross-Site Scripting

SECUNIA ADVISORY ID:
SA29128

VERIFY ADVISORY:
http://secunia.com/advisories/29128/

CRITICAL:
Less critical

IMPACT:
Cross Site Scripting

WHERE:
>From remote

SOFTWARE:
Serendipity 1.x
http://secunia.com/product/12371/

DESCRIPTION:
Hanno Boeck has discovered two vulnerabilities in Serendipity, which
can be exploited by malicious users to conduct cross-site scripting
and script insertion attacks.

1) Input passed to the "realname" parameter in serendipity_admin.php
is not properly sanitised before being stored. This can be exploited
to insert arbitrary HTML and script code, which is executed in a
user's browser session in context of an affected site when the
malicious data is viewed.

2) The serendipity_admin.php script fails to completely validate the
extension of an uploaded file. This can be exploited to upload files
with the ".html" extension, which can then be used for cross-site
scripting attacks.

Successful exploitation of both vulnerabilities requires valid user
credentials.

The vulnerabilities are confirmed in version 1.2.1. Other versions
may also be affected.

SOLUTION:
Only grant access to trusted users.

Vulnerability #1 is fixed in version 1.3-beta1.

PROVIDED AND/OR DISCOVERED BY:
Hanno Boeck

ORIGINAL ADVISORY:
Serendipity:
http://blog.s9y.org/archives/191-Serendipity-1.3-beta1-released.html

Hanno Boeck:
http://int21.de/cve/CVE-2008-0124-s9y.html

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About:
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