Vulnerability CVE-2008-2019
Published: 2008-04-29   Modified: 2012-02-12

Description:
Simple Machines Forum (SMF), probably 1.1.4, relies on "randomly generated static" to hinder brute-force attacks on the WAV file (aka audio) CAPTCHA, which allows remote attackers to pass the CAPTCHA test via an automated attack that considers Hamming distances. NOTE: this issue reportedly exists because of an insufficient fix for CVE-2007-3308.

See advisories in our WLB2 database:
Topic
Author
Date
Low
Deciphering the Simple Machine?s Forum audio Captcha
Michael Brooks
30.04.2008

Type:

CWE-264

 (Permissions, Privileges, and Access Controls)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.5/10
6.4/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Simple machines -> SMF 

 References:
http://securityreason.com/securityalert/3836
http://www.rooksecurity.com/blog/?p=6
http://www.securityfocus.com/archive/1/491128/100/0/threaded
http://www.securityfocus.com/bid/28866
http://www.simplemachines.org/community/index.php?P=c3696c2022b54fa50c5f341bf5710aa3&topic=236816.0
https://exchange.xforce.ibmcloud.com/vulnerabilities/42150
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