[UNIX] FUDforum file access and SQL InjectionFrom: firstname.lastname@example.org
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From: firstname.lastname@example.org To: email@example.com Date: Mon, 19 Aug 2002 10:47:17 +0200 (CEST)
The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
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FUDforum file access and SQL Injection
<http://fud.prohost.org/> FUDforum is a robust, fully customizable, and
extremely scalable forums package. It uses a powerful & speedy combination
of PHP & MySQL to create a highly portable solution that can run on
virtually any operating system. This highly optimized application is an
ideal community solution for any website or company. FUDforum has two
security holes that allow people to download or manipulate files and
directories outside of FUDforum's directories. One of the holes can be
exploited by everyone, while the other requires administrator access. The
program also has some SQL Injection problems.
* FUDforum version 2.0.2, possibly others
* FUDforum version 2.2.0 and above
1) The tmp_view.php script does not check the path of the file that will
be displayed, which means that it can be used for downloading any file on
the system that the httpd daemon's has access to.
You exploit it by surfing to tmp_view.php?file=/etc/passwd. The HTTP
headers that are sent back to you will say that the file is an image,
which prevents downloading of non-image files in a normal web browser.
While in, you use netcat or telnet to connect directly to the web server,
which will get you the file's raw data. This issue does not require any
2) The adm/admbrowse.php script allows downloading and general
manipulation (creation, deletion) of files and directories outside of the
FUDforum directories. Here's how to use admbrowse to download /etc/passwd:
FUDforum has some protection against changing the cur variable like this,
but it mostly stops attackers from getting file listings for unauthorized
directories. It does not protect against many other related issues.
This issue requires administrator access.
3) There are some SQL Injection issues in the code. They are of the easy
type where we do not really have to inject anything, because there are no
apostrophes or quotes around the variable data in the SQL statements.
These problems can be found in the scripts report.php, selmsg.php, and
The vendor was contacted on 17 June, and they replied quickly. The stable
version 2.2.0, which is immune to these holes, was released on 4 July.
The information has been provided by <mailto:firstname.lastname@example.org> Ulf
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