Moodle — система управления образовательными электронными курсами

Multiple cross-site request forgery (CSRF) vulnerabilities in the Forum module 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 allow remote attackers to hijack the authentication of arbitrary users for requests that set a tracking preference within (1) mod/forum/deprecatedlib.php, (2) mod/forum/forum.js, (3) mod/forum/index.php, or (4) mod/forum/lib.php.

The LTI module 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 does not properly restrict the parameters used in a return URL, which allows remote attackers to trigger the generation of arbitrary messages via a modified URL, related to mod/lti/locallib.php and mod/lti/return.php.

lib/classes/grades_external.php in Moodle 2.7.x before 2.7.3 does not consider the moodle/grade:viewhidden capability before displaying hidden grades, which allows remote authenticated users to obtain sensitive information by leveraging the student role to access the get_grades web service.

lib/setup.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 does not provide charset information in HTTP headers, which might allow remote attackers to conduct cross-site scripting (XSS) attacks via UTF-7 characters during interaction with AJAX scripts.

The generate_password function 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 does not provide a sufficient number of possible temporary passwords, which allows remote attackers to obtain access via a brute-force attack.

Multiple cross-site request forgery (CSRF) vulnerabilities in the LTI module 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 allow remote attackers to hijack the authentication of arbitrary users for a (1) mod/lti/request_tool.php or (2) mod/lti/instructor_edit_tool_type.php request.

The forum_print_latest_discussions function in mod/forum/lib.php in Moodle through 2.4.11, 2.5.x before 2.5.8, 2.6.x before 2.6.5, and 2.7.x before 2.7.2 allows remote authenticated users to bypass the individual answer-posting requirement without the mod/forum:viewqandawithoutposting capability, and discover an author's username, by leveraging the student role and visiting a Q&A forum.

The forum_print_latest_discussions function in mod/forum/lib.php in Mo ...

The forum_print_latest_discussions function in mod/forum/lib.php in Moodle through 2.4.11, 2.5.x before 2.5.8, 2.6.x before 2.6.5, and 2.7.x before 2.7.2 allows remote authenticated users to bypass the individual answer-posting requirement without the mod/forum:viewqandawithoutposting capability, and discover an author's username, by leveraging the student role and visiting a Q&A forum.

mod/lti/service.php in Moodle through 2.3.11, 2.4.x before 2.4.11, 2.5.x before 2.5.7, 2.6.x before 2.6.4, and 2.7.x before 2.7.1 allows remote attackers to read arbitrary files via an XML external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue.