Description
The Apache HTTP Server 2.4.18 through 2.4.20, when mod_http2 and mod_ssl are enabled, does not properly recognize the "SSLVerifyClient require" directive for HTTP/2 request authorization, which allows remote attackers to bypass intended access restrictions by leveraging the ability to send multiple requests over a single connection and aborting a renegotiation.
Remediation
References
Related Vulnerabilities
Magento Authorization Bypass Through User-Controlled Key Vulnerability (CVE-2019-7890)
Atlassian Jira CVE-2018-5231 Vulnerability (CVE-2018-5231)
Oracle Application Server CVE-2008-3987 Vulnerability (CVE-2008-3987)
MySQL CVE-2015-4819 Vulnerability (CVE-2015-4819)
Internet Information Services Other Vulnerability (CVE-2000-0025)