This update for apache2 fixes the following issues: Security issues fixed: - CVE-2019-9517: Fixed HTTP/2 implementations that are vulnerable to unconstrained interal data buffering . - CVE-2019-10081: Fixed mod_http2 that is vulnerable to memory corruption on early pushes . - CVE-2019-10082: Fixed mod_http2 that is vulnerable to read-after-free in h2 connection shutdown . - CVE-2019-10092: Fixed limited cross-site scripting in mod_proxy . - CVE-2019-10098: Fixed mod_rewrite configuration vulnerablility to open redirect .