Important: httpd

Issue Overview:

In Apache HTTP Server with MPM event, worker or prefork, code executing in less-privileged child processes or threads (including scripts executed by an in-process scripting interpreter) could execute arbitrary code with the privileges of the parent process (usually root) by manipulating the scoreboard. (CVE-2019-0211)

mod_http2: read-after-free on a string compare (CVE-2019-0196)

mod_http2: possible crash on late upgrade (CVE-2019-0197)

httpd: URL normalization inconsistency (CVE-2019-0220)

In Apache HTTP Server 2.4 releases 2.4.37 and 2.4.38, a bug in mod_ssl when using per-location client certificate verification with TLSv1.3 allowed a client to bypass configured access control restrictions.(CVE-2019-0215)

A race condition was found in mod_auth_digest when the web server was running in a threaded MPM configuration. It could allow a user with valid credentials to authenticate using another username, bypassing configured access control restrictions.(CVE-2019-0217)

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-2.4.39-1.amzn2.0.1.aarch64  
    httpd-devel-2.4.39-1.amzn2.0.1.aarch64  
    httpd-tools-2.4.39-1.amzn2.0.1.aarch64  
    mod_ssl-2.4.39-1.amzn2.0.1.aarch64  
    mod_md-2.4.39-1.amzn2.0.1.aarch64  
    mod_proxy_html-2.4.39-1.amzn2.0.1.aarch64  
    mod_ldap-2.4.39-1.amzn2.0.1.aarch64  
    mod_session-2.4.39-1.amzn2.0.1.aarch64  
    httpd-debuginfo-2.4.39-1.amzn2.0.1.aarch64  
  
i686:  
    httpd-2.4.39-1.amzn2.0.1.i686  
    httpd-devel-2.4.39-1.amzn2.0.1.i686  
    httpd-tools-2.4.39-1.amzn2.0.1.i686  
    mod_ssl-2.4.39-1.amzn2.0.1.i686  
    mod_md-2.4.39-1.amzn2.0.1.i686  
    mod_proxy_html-2.4.39-1.amzn2.0.1.i686  
    mod_ldap-2.4.39-1.amzn2.0.1.i686  
    mod_session-2.4.39-1.amzn2.0.1.i686  
    httpd-debuginfo-2.4.39-1.amzn2.0.1.i686  
  
noarch:  
    httpd-manual-2.4.39-1.amzn2.0.1.noarch  
    httpd-filesystem-2.4.39-1.amzn2.0.1.noarch  
  
src:  
    httpd-2.4.39-1.amzn2.0.1.src  
  
x86_64:  
    httpd-2.4.39-1.amzn2.0.1.x86_64  
    httpd-devel-2.4.39-1.amzn2.0.1.x86_64  
    httpd-tools-2.4.39-1.amzn2.0.1.x86_64  
    mod_ssl-2.4.39-1.amzn2.0.1.x86_64  
    mod_md-2.4.39-1.amzn2.0.1.x86_64  
    mod_proxy_html-2.4.39-1.amzn2.0.1.x86_64  
    mod_ldap-2.4.39-1.amzn2.0.1.x86_64  
    mod_session-2.4.39-1.amzn2.0.1.x86_64  
    httpd-debuginfo-2.4.39-1.amzn2.0.1.x86_64  

Additional References

Red Hat: CVE-2019-0196, CVE-2019-0197, CVE-2019-0211, CVE-2019-0215, CVE-2019-0217, CVE-2019-0220

Mitre: CVE-2019-0196, CVE-2019-0197, CVE-2019-0211, CVE-2019-0215, CVE-2019-0217, CVE-2019-0220