'PHP Grade Book' Unauthenticated SQL Database Export (CVE-2012-1670)
Mark Stanislav - mark.stanislav (at) gmail (dot) com [email concealed]

I. DESCRIPTION
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A vulnerability exists in admin/index.php that allows for an
unauthenticated user to export the entire application database by
accessing the 'Database Backup' method without restriction. Due to the
way sessions are handled, an attacker can then simply pass the
username and password-hash via cookies to assume the administrative
role without ever knowing the clear-text version of the password.

II. TESTED VERSION
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1.9.4

III. PoC EXPLOIT
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http://localhost/phpGradeBook/admin/index.php?action=SaveSQL

IV. SOLUTION
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Upgrade to 1.9.5 or above.

V. REFERENCES
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http://sourceforge.net/projects/php-gradebook/
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-1670

VI. TIMELINE
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02/29/2012 - Initial vendor disclosure
02/29/2012 - Vendor response and commitment to fix
03/01/2012 - Vendor patched and released an updated version
03/22/2012 - Public disclosure

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