Apache HTTP server security update fixes multiple security vulnerabilities including the privilege escalation vulnerability that allows users to run PHP, CGI script to gain the root access.
The vulnerability affects all the releases between 2.4.17 to 2.4.38, and it can be tracked as CVE-2019-0211. A low privileged user could execute arbitrary code with the privileges of the root process by manipulating the scoreboard.
It affects Unix systems and the non-Unix systems are not affected, reads Apache security advisory.
The vulnerability affects Apache HTTP Server between 2.4 to 2.4.38, a race condition in mod_auth_digest allows any user with valid credentials can authenticate using another username. The vulnerability can be tracked as CVE-2019-0217.
A bug in mod_ssl allows a client with TLS 1.3 supporting Post-Handshake Authentication to bypass configured access control restrictions. The bug affects the releases 2.4.37 and 2.4.38 and the vulnerability can be tracked as CVE-2019-0215.
The server’s with H2Upgrade enabled for h2 are affected, if they receive the request from http/1.1 to http/2, may lead to misconfiguration and crash. Sever that never enabled h2 protocol are unaffected.
“http/2 request handling could be made to access freed memory in string comparison when determining the method of a request and thus process the request incorrectly”, the vulnerability can be tracked as CVE-2019-0197/CVE-2019-0196.
If the path URL contains multiple slashes such as LocationMatch and RewriteRule in regular expressions may cause the server to collapse.
The vulnerability affects the versions between 2.4.0 to 2.4.38 and it can be tracked as CVE-2019-0220.
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