A movabletype-opensource security update has been released for Debian GNU/Linux

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Debian Security Advisory DSA-2423-1 security@debian.org
http://www.debian.org/security/ Florian Weimer
March 02, 2012 http://www.debian.org/security/faq
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Package : movabletype-opensource
Vulnerability : several
Problem type : remote
Debian-specific: no
Debian Bug : 631437 661064

Several vulnerabilities were discovered in Movable Type, a blogging
system:

Under certain circumstances, a user who has "Create Entries" or
"Manage Blog" permissions may be able to read known files on the local
file system.

The file management system contains shell command injection
vulnerabilities, the most serious of which may lead to arbitrary OS
command execution by a user who has a permission to sign-in to the
admin script and also has a permission to upload files.

Session hijack and cross-site request forgery vulnerabilities exist in
the commenting and the community script. A remote attacker could
hijack the user session or could execute arbitrary script code on
victim's browser under the certain circumstances.

Templates which do not escape variable properly and mt-wizard.cgi
contain cross-site scripting vulnerabilities.

For the stable distribution (squeeze), these problems have been fixed
in version 4.3.8+dfsg-0+squeeze2.

For the testing distribution (wheezy) and the unstable distribution
(sid), these problems have been fixed in version 5.1.3+dfsg-1.

We recommend that you upgrade your movabletype-opensource packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/