Synopsis

Important: rh-nginx114-nginx security update

Type/Severity

Security Advisory: Important

Topic

An update for rh-nginx114-nginx is now available for Red Hat Software Collections.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage.

The following packages have been upgraded to a later upstream version: rh-nginx114-nginx (1.14.1). (BZ#1648365)

Security Fix(es):

• nginx: Denial of service and memory disclosure via mp4 module (CVE-2018-16845)
• nginx: Excessive memory consumption via flaw in HTTP/2 implementation (CVE-2018-16843)
• nginx: Excessive CPU usage via flaw in HTTP/2 implementation (CVE-2018-16844)

For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.

Red Hat would like to thank the Nginx project for reporting these issues.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

The rh-nginx114-nginx service must be restarted for this update to take effect.

Affected Products

• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.7 x86_64
• Red Hat Software Collections (for RHEL Server for System Z) 1 for RHEL 7.7 s390x
• Red Hat Software Collections (for RHEL Server for IBM Power LE) 1 for RHEL 7.7 ppc64le
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.6 x86_64
• Red Hat Software Collections (for RHEL Server for System Z) 1 for RHEL 7.6 s390x
• Red Hat Software Collections (for RHEL Server for IBM Power LE) 1 for RHEL 7.6 ppc64le
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.5 x86_64
• Red Hat Software Collections (for RHEL Server for System Z) 1 for RHEL 7.5 s390x
• Red Hat Software Collections (for RHEL Server for IBM Power LE) 1 for RHEL 7.5 ppc64le
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.4 x86_64
• Red Hat Software Collections (for RHEL Server for System Z) 1 for RHEL 7.4 s390x
• Red Hat Software Collections (for RHEL Server for IBM Power LE) 1 for RHEL 7.4 ppc64le
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7 x86_64
• Red Hat Software Collections (for RHEL Server for System Z) 1 for RHEL 7 s390x
• Red Hat Software Collections (for RHEL Server for IBM Power LE) 1 for RHEL 7 ppc64le
• Red Hat Software Collections (for RHEL Server for ARM) 1 aarch64
• Red Hat Software Collections (for RHEL Workstation) 1 for RHEL 7 x86_64

Fixes

• BZ - 1644508 - CVE-2018-16845 nginx: Denial of service and memory disclosure via mp4 module
• BZ - 1644510 - CVE-2018-16844 nginx: Excessive CPU usage via flaw in HTTP/2 implementation
• BZ - 1644511 - CVE-2018-16843 nginx: Excessive memory consumption via flaw in HTTP/2 implementation

CVEs

• CVE-2018-16843
• CVE-2018-16844
• CVE-2018-16845

References