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Hardcore Disassembler / Reverse Engineer

Reversing must be a passion as your skills will be challenged
on a daily basis and you will be working several hours
everyday in IDA, Ollydbg, and with BinDiff. Often, it is also
required that you write a PoC or even a working exploit to
prove that an issue is exploitable.

http://secunia.com/hardcore_disassembler_and_reverse_engineer/

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TITLE:
TWiki Multiple File Extensions File Upload Vulnerability

SECUNIA ADVISORY ID:
SA20992

VERIFY ADVISORY:
http://secunia.com/advisories/20992/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
TWiki
http://secunia.com/product/4248/

DESCRIPTION:
A vulnerability has been reported in TWiki, which potentially can be
exploited by malicious people to compromise a vulnerable system.

The vulnerability is caused due to an error in the handling of file
uploads where a filename has multiple file extensions. This can be
exploited to upload malicious script files inside the pub directory
(e.g. a PHP script).

Successful exploitation may allow execution of script code depending
on the HTTP server configuration (it requires e.g. an Apache server
with the "mod_mime" module installed).

The vulnerability has been reported in the following releases:
* TWikiRelease04x00x03
* TWikiRelease04x00x02
* TWikiRelease04x00x01
* TWikiRelease04x00x00
* TWikiRelease04Sep2004
* TWikiRelease03Sep2004
* TWikiRelease02Sep2004
* TWikiRelease01Sep2004
* TWikiRelease01Feb2003
* TWikiRelease01Dec2001
* TWikiRelease01Dec2000

SOLUTION:
Apply patch (see original advisory).

Update to TWikiRelease04x00x04.
http://twiki.org/cgi-bin/view/Codev/TWikiRelease04x00x04

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Tom McAdam.

ORIGINAL ADVISORY:
http://twiki.org/cgi-bin/view/Codev/SecurityAlertSecureFileUploads

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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