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TITLE:
Textpattern Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA28793

VERIFY ADVISORY:
http://secunia.com/advisories/28793/

CRITICAL:
Less critical

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

WHERE:
>From remote

SOFTWARE:
Textpattern 4.x
http://secunia.com/product/17462/

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

1) Input passed to an unspecified parameter in textpattern/index.php
is not properly verified before being used to include files. This can
be exploited to include arbitrary files from local resources.

Successful exploitation requires publisher privileges.

2) Input passed as the "Body" parameter in textarea/index.php when
the "event" parameter is set to "article" ("Write" page in admin
console) is not properly sanitised before being used. This can be
exploited to insert arbitrary HTML and script code, which will be
executed in a user's browser session in context of an affected site
when a malicious article is viewed.

Successful exploitation requires publisher privileges.

3) Input passed as the comment name is not properly sanitised in
comment previews. This can be exploited to execute arbitrary HTML and
script code in a user's browser session in context of an affected
site.

Other issues e.g. changing a password does not require the old
password and a parameter value overflow in textarea/index.php have
also been reported.

The vulnerabilities are reported in version 4.0.5. Prior versions may
also be affected.

SOLUTION:
Update to version 4.0.6.
http://textpattern.com/download/

NOTE: This does not fix vulnerability #2.

Edit the source code to ensure that input is properly sanitised.

PROVIDED AND/OR DISCOVERED BY:
1) The vendor credits DSecRG and Victor.
2, 3) Alexandr Polyakov and Stas Svistunovich, Digital Security
Research Group

ORIGINAL ADVISORY:
http://www.textpattern.com/weblog/310/textpattern-406-released

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About:
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