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Important Security Update for nginx:1.18 in Red Hat Enterprise Linux 8

red hat
Calendar Grey June 7, 2021
Dist Redhat Esm H88
A crucial nginx:1.18 security patch has been released for Red Hat Enterprise Linux 8, effectively resolving significant vulnerabilities.
An update for the nginx:1.18 module is now available for Red Hat Enterprise Linux 8

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

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 issue Red Hat 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 Enterprise Linux AppStream (v. 8):
Source: nginx-1.18.0-3.module+el8.4.0+11152+f736ed63.1.src.rpm
aarch64: nginx-1.18.0-3.module+el8.4.0+11152+f736ed63.1.aarch64.rpm nginx-debuginfo-1.18.0-3.module+el8.4.0+11152+f736ed63.1.aarch64.rpm nginx-debugsource-1.18.0-3.module+el8.4.0+11152+f736ed63.1.aarch64.rpm nginx-mod-http-image-filter-1.18.0-3.module+el8.4.0+11152+f736ed63.1.aarch64.rpm nginx-mod-http-image-filter-debuginfo-1.18.0-3.module+el8.4.0+11152+f736ed63.1.aarch64.rpm nginx-mod-http-perl-1.18.0-3.module+el8.4.0+11152+f736ed63.1.aarch64.rpm nginx-mod-http-perl-debuginfo-1.18.0-3.module+el8.4.0+11152+f736ed63.1.aarch64.rpm nginx-mod-http-xslt-filter-1.18.0-3.module+el8.4.0+11152+f736ed63.1.aarch64.rpm nginx-mod-http-xslt-filter-debuginfo-1.18.0-3.module+el8.4.0+11152+f736ed63.1.aarch64.rpm nginx-mod-mail-1.18.0-3.module+el8.4.0+11152+f736ed63.1.aarch64.rpm nginx-mod-mail-debuginfo-1.18.0-3.module+el8.4.0+11152+f736ed63.1.aarch64.rpm nginx-mod-stream-1.18.0-3.module+el8.4.0+11152+f736ed63.1.aarch64.rpm nginx-mod-stream-debuginfo-1.18.0-3.module+el8.4.0+11152+f736ed63.1.aarch64.rpm
noarch: nginx-all-modules-1.18.0-3.module+el8.4.0+11152+f736ed63.1.noarch.rpm nginx-filesystem-1.18.0-3.module+el8.4.0+11152+f736ed63.1.noarch.rpm
ppc64le:

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:2259-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:2259
Issue date: 2021-06-07

Topic

An update for the nginx:1.18 module is now available for Red Hat EnterpriseLinux 8.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 issue Red Hat important nginx web server

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, noarch, ppc64le, s390x, 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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