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authorcanyonknight <canyonknight@gmail.com>2012-06-23 14:40:11 -0400
committerLukas Fleischer <archlinux@cryptocrack.de>2012-06-24 10:59:23 +0200
commit2c93f0a98f0f6380fd07ea17fd16afa2c6e4925b (patch)
treedc5fd78a8cb46cd1475b45eeaa6544fbdeb23280 /web/lib/aurjson.class.php
parentbfb25807c49d3f35cdce91947a442455e1940392 (diff)
downloadaurweb-2c93f0a98f0f6380fd07ea17fd16afa2c6e4925b.tar.xz
Implement token system to fix CSRF vulnerabilities
Specially crafted pages can force authenticated users to unknowingly perform actions on the AUR website despite being on an attacker's website. This cross-site request forgery (CSRF) vulnerability applies to all POST data on the AUR. Implement a token system using a double submit cookie. Have a hidden form value on every page containing POST forms. Use the newly added check_token() to verify the token sent via POST matches the "AURSID" cookie value. Random nature of the token limits potential for CSRF. Signed-off-by: canyonknight <canyonknight@gmail.com> Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>
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