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VID 22900
Severity 30
Port 80, ...
Protocol TCP
Class WWW
Detailed Description According to its banner, the version of Apache running on the remote host is either 2.4.17 or 2.4.18.

A denial of service (DoS) vulnerability exists in server threads due to a lengthy thread-block time. An unauthenticated, remote attacker can exploit this issue, to block server threads, and causing the application to stop responding.

* References:
https://archive.apache.org/dist/httpd/CHANGES_2.4.20
https://httpd.apache.org/security/vulnerabilities_24.html

* Platforms Affected:
Apache HTTP versions 2.4.17 or 2.4.18
Any operating system Any version
Recommendation Upgrade to the latest version of Apache HTTP Server (2.4.20 or later), available from the Apache Software Foundation download site, http://httpd.apache.org/download.cgi
Related URL CVE-2016-1546 (CVE)
Related URL 92331 (SecurityFocus)
Related URL (ISS)