Hello Bugtraq! I want to warn you about security vulnerabilities in NoCMS (in both versions for work with Ascent and Mangos). ----------------------------- Advisory: Vulnerabilities in NoCMS ----------------------------- URL: http://websecurity.com.ua/4065/ ----------------------------- Timeline: 17.03.2010 - found vulnerabilities. 24.03.2010 - disclosed at my site. 25.03.2010 - 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/libs/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/libs/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 all versions of NoCMS. Best wishes & regards, MustLive Administrator of Websecurity web site http://websecurity.com.ua
