Description
In some mod_ssl configurations on Apache HTTP Server versions through to 2.4.63, an HTTP desynchronisation attack allows a man-in-the-middle attacker to hijack an HTTP session via a TLS upgrade. Only configurations using "SSLEngine optional" to enable TLS upgrades are affected. Users are recommended to upgrade to version 2.4.64, which removes support for TLS upgrade.
Remediation
References
Related Vulnerabilities
PHP Improper Input Validation Vulnerability (CVE-2011-1470)
WordPress Plugin WP Docs Multiple Vulnerabilities (1.1.7)
WordPress Plugin Deny All Firewall Cross-Site Request Forgery (1.1.6)
Moodle Permissions, Privileges, and Access Controls Vulnerability (CVE-2015-3179)
phpMyAdmin Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2015-8669)