ALAS-2019-1166


Amazon Linux AMI Security Advisory: ALAS-2019-1166
Advisory Release Date: 2019-03-25 23:20 Pacific
Severity: Important

Issue Overview:

In Apache HTTP server by sending request bodies in a slow loris way to plain resources, the h2 stream for that request unnecessarily occupied a server thread cleaning up that incoming data. This affects only HTTP/2 (mod_http2) connections. (CVE-2018-17189 )

A bug exists in the way mod_ssl handled client renegotiations. A remote attacker could send a carefully crafted request that would cause mod_ssl to enter a loop leading to a denial of service. (CVE-2019-0190 )

In Apache HTTP Server mod_session checks the session expiry time before decoding the session. This causes session expiry time to be ignored for mod_session_cookie sessions since the expiry time is loaded when the session is decoded. (CVE-2018-17199 )


Affected Packages:

httpd24


Issue Correction:
Run yum update httpd24 to update your system.

New Packages:
i686:
    mod24_md-2.4.38-1.86.amzn1.i686
    mod24_session-2.4.38-1.86.amzn1.i686
    httpd24-debuginfo-2.4.38-1.86.amzn1.i686
    mod24_ssl-2.4.38-1.86.amzn1.i686
    httpd24-2.4.38-1.86.amzn1.i686
    mod24_ldap-2.4.38-1.86.amzn1.i686
    httpd24-tools-2.4.38-1.86.amzn1.i686
    httpd24-devel-2.4.38-1.86.amzn1.i686
    mod24_proxy_html-2.4.38-1.86.amzn1.i686

noarch:
    httpd24-manual-2.4.38-1.86.amzn1.noarch

src:
    httpd24-2.4.38-1.86.amzn1.src

x86_64:
    httpd24-debuginfo-2.4.38-1.86.amzn1.x86_64
    mod24_proxy_html-2.4.38-1.86.amzn1.x86_64
    httpd24-2.4.38-1.86.amzn1.x86_64
    mod24_ssl-2.4.38-1.86.amzn1.x86_64
    mod24_md-2.4.38-1.86.amzn1.x86_64
    mod24_session-2.4.38-1.86.amzn1.x86_64
    httpd24-devel-2.4.38-1.86.amzn1.x86_64
    mod24_ldap-2.4.38-1.86.amzn1.x86_64
    httpd24-tools-2.4.38-1.86.amzn1.x86_64