GoogleOSV:GHSA-JQ7X-GM9R-V8M7Moodle allows attackers to obtain sensitive information
mod/data/edit.php in Moodle through 2.4.11, 2.5.x before 2.5.9, 2.6.x before 2.6.6, and 2.7.x before 2.7.3 sets a certain group ID to zero upon a database-entry change, which allows remote authenticated users to obtain sensitive information by accessing the database after an edit by a teacher.
References
git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-47697
openwall.com/lists/oss-security/2014/11/17/11
github.com/moodle/moodle
github.com/moodle/moodle/commit/2c639e85a32aaef4a9978e5ca139fb74ca5d6ae4
github.com/moodle/moodle/commit/3e312a16f48dd8e8b230cb71e64295ee54992f80
github.com/moodle/moodle/commit/c4a6c65c1bd8536484a9e53e62d3867081dedd6b
github.com/moodle/moodle/commit/cc375a22b95b2e0f927a21ffd97c06f2276d8c14
moodle.org/mod/forum/discuss.php?d=275155
nvd.nist.gov/vuln/detail/CVE-2014-7833
web.archive.org/web/20150914064838/www.securitytracker.com/id/1031215
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