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Message-ID: <005b01cacb9b$f0525f20$010000c0@ml>
Date: Wed, 24 Mar 2010 23:48:30 +0200
From: "MustLive" <mustlive@...security.com.ua>
To: <bugtraq@...urityfocus.com>
Subject: Vulnerabilities in WeBAM
Hello Bugtraq!
I want to warn you about security vulnerabilities in WeBAM.
-----------------------------
Advisory: Vulnerabilities in WeBAM
-----------------------------
URL: http://websecurity.com.ua/4046/
-----------------------------
Timeline:
17.03.2010 - found vulnerabilities.
18.03.2010 - disclosed at my site.
20.03.2010 - informed developers.
-----------------------------
Details:
These are Insufficient Anti-automation and Denial of Service
vulnerabilities.
The vulnerabilities exist in captcha script CaptchaSecurityImages.php, which
is using in this system. I already reported about vulnerabilities in
CaptchaSecurityImages (http://websecurity.com.ua/4043/).
Insufficient Anti-automation:
http://site/captcha/CaptchaSecurityImages.php?width=150&height=100&characters=2
Captcha bypass is possible as via half-automated or automated (with using of
OCR) methods, which were mentioned before (http://websecurity.com.ua/4043/),
as with using of session reusing with constant captcha bypass method
(http://websecurity.com.ua/1551/), which was described in project Month of
Bugs in Captchas.
DoS:
http://site/captcha/CaptchaSecurityImages.php?width=1000&height=9000
With setting of large values of width and height it's possible to create
large load at the server.
Vulnerable are WeBAM 1.x versions.
Best wishes & regards,
MustLive
Administrator of Websecurity web site
http://websecurity.com.ua
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