Description
mnet/xmlrpc/client.php in MNET in Moodle 1.9.x before 1.9.14, 2.0.x before 2.0.5, and 2.1.x before 2.1.2 does not properly process the return value of the openssl_verify function, which allows remote attackers to bypass validation via a crafted certificate.
Remediation
References
Related Vulnerabilities
WordPress Plugin Duo Two-Factor Authentication Security Bypass (1.8.1)
IBMHttpServer Improper Input Validation Vulnerability (CVE-2023-26281)
WordPress Plugin Passster Age Gate Security Bypass (4.0.6)
MySQL CVE-2021-2166 Vulnerability (CVE-2021-2166)
OpenSSL Resource Management Errors Vulnerability (CVE-2009-4355)