Description
OpenSSL before 0.9.8za, 1.0.0 before 1.0.0m, and 1.0.1 before 1.0.1h does not properly restrict processing of ChangeCipherSpec messages, which allows man-in-the-middle attackers to trigger use of a zero-length master key in certain OpenSSL-to-OpenSSL communications, and consequently hijack sessions or obtain sensitive information, via a crafted TLS handshake, aka the "CCS Injection" vulnerability.
Remediation
References
Related Vulnerabilities
WordPress 4.5.x Multiple Vulnerabilities (4.5 - 4.5.9)
WordPress Plugin Photo Gallery by 10Web-Mobile-Friendly Image Gallery SQL Injection (1.5.54)
IBM RTC Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2017-1570)
WordPress Plugin Gallery-Video Gallery and Youtube Gallery Cross-Site Scripting (1.7.01)