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Red Hat: RHSA-2021:2258-01 Important: Off-By-One Security Fix

red hat
Calendar Grey June 7, 2021
Dist Redhat Esm H88
Crucial rh-nginx118-nginx security patch for Red Hat Software Collections tackles vulnerabilities classified as critical.
An update for rh-nginx118-nginx is now available for Red Hat Software Collections

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-nginx118-nginx service must be restarted for this update to take effect.

Summary

nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage.
Security Fix(es):
* nginx: Off-by-one in ngx_resolver_copy() when labels are followed by a pointer to a root domain name (CVE-2021-23017)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Topics%20covered

Topics Covered

security advisory security update red hat security fix important nginx web server

References

https://access.redhat.com/security/cve/CVE-2021-23017 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7):
Source: rh-nginx118-nginx-1.18.0-3.el7.src.rpm
ppc64le: rh-nginx118-nginx-1.18.0-3.el7.ppc64le.rpm rh-nginx118-nginx-debuginfo-1.18.0-3.el7.ppc64le.rpm rh-nginx118-nginx-mod-http-image-filter-1.18.0-3.el7.ppc64le.rpm rh-nginx118-nginx-mod-http-perl-1.18.0-3.el7.ppc64le.rpm rh-nginx118-nginx-mod-http-xslt-filter-1.18.0-3.el7.ppc64le.rpm rh-nginx118-nginx-mod-mail-1.18.0-3.el7.ppc64le.rpm rh-nginx118-nginx-mod-stream-1.18.0-3.el7.ppc64le.rpm
s390x: rh-nginx118-nginx-1.18.0-3.el7.s390x.rpm rh-nginx118-nginx-debuginfo-1.18.0-3.el7.s390x.rpm rh-nginx118-nginx-mod-http-image-filter-1.18.0-3.el7.s390x.rpm rh-nginx118-nginx-mod-http-perl-1.18.0-3.el7.s390x.rpm rh-nginx118-nginx-mod-http-xslt-filter-1.18.0-3.el7.s390x.rpm rh-nginx118-nginx-mod-mail-1.18.0-3.el7.s390x.rpm rh-nginx118-nginx-mod-stream-1.18.0-3.el7.s390x.rpm
x86_64: rh-nginx118-nginx-1.18.0-3.el7.x86_64.rpm rh-nginx118-nginx-debuginfo-1.18.0-3.el7.x86_64.rpm rh-nginx118-nginx-mod-http-image-filter-1.18.0-3.el7.x86_64.rpm rh-nginx118-nginx-mod-http-perl-1.18.0-3.el7.x86_64.rpm rh-nginx118-nginx-mod-http-xslt-filter-1.18.0-3.el7.x86_64.rpm rh-nginx118-nginx-mod-mail-1.18.0-3.el7.x86_64.rpm rh-nginx118-nginx-mod-stream-1.18.0-3.el7.x86_64.rpm


Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:2258-01
Product: Red Hat Software Collections
Advisory URL: https://access.redhat.com/errata/RHSA-2021:2258
Issue date: 2021-06-07

Topic

An update for rh-nginx118-nginx is now available for Red Hat SoftwareCollections.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory security update red hat security fix important nginx web server

Relevant Releases Architectures

Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) - ppc64le, s390x, x86_64

Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7) - ppc64le, s390x, x86_64

Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Bugs Fixed

1963121 - CVE-2021-23017 nginx: Off-by-one in ngx_resolver_copy() when labels are followed by a pointer to a root domain name

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