The login() function in MISP’s UsersController.php contained insufficient HTTP method validation for several security-critical code paths. The original code used an allowlist approach, checking only for specific HTTP methods (POST and PUT) before enforcing bruteforce protection, email one-time-password (OTP) verification, and login-failure logging. Because the checks were not exhaustive, an unauthenticated attacker could issue login requests using other HTTP methods and bypass all three security controls simultaneously. Specifically:\u00a0<\/p>\n
\u2003-\u00a0the bruteforce blocklisting check and attempt counter were skipped, allowing unlimited credential-guessing attempts without being rate-limited or blocked
\n\u2003-\u00a0 the email OTP two-factor authentication step was skipped, defeating the second factor of authentication
\n\u2003- login-failure events were neither logged nor counted, removing the audit trail and the mechanism that would normally trigger a blocklist entry.<\/p>\n
The security impact is the effective disabling of brute-force protection and multi-factor authentication for any attacker who can craft an HTTP request with a non-POST\/PUT method to the login endpoint, potentially leading to credential compromise and unauthorized access to the MISP instance.<\/p>\n
Version affected: <2.5.47<\/p>\n","protected":false},"excerpt":{"rendered":"
The login() function in MISP’s UsersController.php contained insufficient HTTP method validation for several security-critical code paths. The original code used an allowlist approach, checking only f<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-27145","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/27145","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=27145"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=27145"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=27145"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}