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TITLE:
Typo3 Cross-Site Scripting and Information Disclosure

SECUNIA ADVISORY ID:
SA33829

VERIFY ADVISORY:
http://secunia.com/advisories/33829/

CRITICAL:
Moderately critical

IMPACT:
Cross Site Scripting, Exposure of system information, Exposure of
sensitive information

WHERE:
>From remote

SOFTWARE:
TYPO3 4.x
http://secunia.com/advisories/product/12113/
TYPO3 3.x
http://secunia.com/advisories/product/1190/

DESCRIPTION:
Some vulnerabilities have been reported in Typo3, which can be
exploited by malicious people to conduct cross-site scripting attacks
and disclose sensitive information.

1) Input passed via unspecified fields to the backend user interface
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.

2) An error in the "jumpUrl" mechanism can be exploited to read
arbitrary files from local resources by disclosing a hash secret used
to restrict file access.

SOLUTION:
Update to version 4.0.12, 4.1.10, or 4.2.6.

PROVIDED AND/OR DISCOVERED BY:
The vendor credits:
1) Jelmer de Hen and Dmitry Dulepov
2) Marcus Krause

ORIGINAL ADVISORY:
http://typo3.org/teams/security/security-bulletins/typo3-sa-2009-002/

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