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TITLE:
Movable Type Cross-Site Scripting and Security Bypass Vulnerabilities

SECUNIA ADVISORY ID:
SA33432

VERIFY ADVISORY:
http://secunia.com/advisories/33432/

CRITICAL:
Less critical

IMPACT:
Security Bypass, Cross Site Scripting

WHERE:
>From remote

REVISION:
1.2 originally posted 2009-01-08

SOFTWARE:
Movable Type Enterprise 1.x
http://secunia.com/advisories/product/12121/
Movable Type 4.x
http://secunia.com/advisories/product/19770/
Movable Type 3.x
http://secunia.com/advisories/product/5753/

DESCRIPTION:
Some vulnerabilities have been reported in Movable Type, which can be
exploited by malicious users to bypass certain security restrictions
and by malicious people to conduct cross-site scripting attacks.

1) Input passed to unspecified parameters 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 the
context of an affected site.

This vulnerability is reported in the following versions. Other
versions may also be affected.
- Movable Type 4
- Movable Type 4 Enterprise
- Movable Type 4 Community Solution
- Movable Type 4 (Open Source)
- Movable Type 3
- Movable Type Enterprise 1.5

2) An error in the "Manage Entries" interface can be exploited by a
user with "create post" permissions to publish certain posts without
having the required "publish post" permission.

This vulnerability is reported in versions prior to 4.23.

SOLUTION:
Update to the latest version:
- Movable Type 4.23 (Open Source)
- Movable Type 4.23 (Professional Pack, Community Pack included)
- Movable Type Commercial 4.23 (Professional Pack included)
- Movable Type Enterprise 4.23
- Movable Type 3.38
- Movable Type Enterprise 1.56

PROVIDED AND/OR DISCOVERED BY:
1) Reported via JVN.
2) Reported by the vendor.

CHANGELOG:
2009-01-09: Added CVE reference.
2009-01-13: Added vulnerability #2. Added CVE reference. Added link
to "Original Advisory" section.

ORIGINAL ADVISORY:
JVN:
http://jvn.jp/jp/JVN71945722/index.html

Movable Type:
http://www.movabletype.jp/blog/_movable_type_423.html
http://www.movabletype.org/mt_423_change_log.html

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