Medium: httpd

Issue Overview:

In Apache HTTP Server 2.4.17 to 2.4.34, by sending continuous, large SETTINGS frames a client can occupy a connection, server thread and CPU time without any connection timeout coming to effect. This affects only HTTP/2 connections. A possible mitigation is to not enable the h2 protocol.(CVE-2018-11763)

Affected Packages:

httpd

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update httpd to update your system.

New Packages:

aarch64:  
    httpd-2.4.37-1.amzn2.0.1.aarch64  
    httpd-devel-2.4.37-1.amzn2.0.1.aarch64  
    httpd-tools-2.4.37-1.amzn2.0.1.aarch64  
    mod_ssl-2.4.37-1.amzn2.0.1.aarch64  
    mod_md-2.4.37-1.amzn2.0.1.aarch64  
    mod_proxy_html-2.4.37-1.amzn2.0.1.aarch64  
    mod_ldap-2.4.37-1.amzn2.0.1.aarch64  
    mod_session-2.4.37-1.amzn2.0.1.aarch64  
    httpd-debuginfo-2.4.37-1.amzn2.0.1.aarch64  
  
i686:  
    httpd-2.4.37-1.amzn2.0.1.i686  
    httpd-devel-2.4.37-1.amzn2.0.1.i686  
    httpd-tools-2.4.37-1.amzn2.0.1.i686  
    mod_ssl-2.4.37-1.amzn2.0.1.i686  
    mod_md-2.4.37-1.amzn2.0.1.i686  
    mod_proxy_html-2.4.37-1.amzn2.0.1.i686  
    mod_ldap-2.4.37-1.amzn2.0.1.i686  
    mod_session-2.4.37-1.amzn2.0.1.i686  
    httpd-debuginfo-2.4.37-1.amzn2.0.1.i686  
  
noarch:  
    httpd-manual-2.4.37-1.amzn2.0.1.noarch  
    httpd-filesystem-2.4.37-1.amzn2.0.1.noarch  
  
src:  
    httpd-2.4.37-1.amzn2.0.1.src  
  
x86_64:  
    httpd-2.4.37-1.amzn2.0.1.x86_64  
    httpd-devel-2.4.37-1.amzn2.0.1.x86_64  
    httpd-tools-2.4.37-1.amzn2.0.1.x86_64  
    mod_ssl-2.4.37-1.amzn2.0.1.x86_64  
    mod_md-2.4.37-1.amzn2.0.1.x86_64  
    mod_proxy_html-2.4.37-1.amzn2.0.1.x86_64  
    mod_ldap-2.4.37-1.amzn2.0.1.x86_64  
    mod_session-2.4.37-1.amzn2.0.1.x86_64  
    httpd-debuginfo-2.4.37-1.amzn2.0.1.x86_64  

Additional References

Red Hat: CVE-2018-11763

Mitre: CVE-2018-11763