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Red Hat Security Advisory
Synopsis: Important: nginx:1.20 security update
Advisory ID: RHSA-2022:0323-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:0323
Issue date: 2022-01-31
CVE Names: CVE-2021-23017
====================================================================
1. Summary:
An update for the nginx:1.20 module is now available for Red Hat Enterprise
Linux 8.
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.
2. Relevant releases/architectures:
Red Hat Enterprise Linux AppStream (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64
3. 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:
nginx (1.20.1). (BZ#2031030)
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.
4. 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
5. Bugs fixed (https://bugzilla.redhat.com/):
1963121 - CVE-2021-23017 nginx: Off-by-one in ngx_resolver_copy() when labels are followed by a pointer to a root domain name
6. Package List:
Red Hat Enterprise Linux AppStream (v. 8):
Source:
nginx-1.20.1-1.module+el8.5.0+13723+ab304644.src.rpm
aarch64:
nginx-1.20.1-1.module+el8.5.0+13723+ab304644.aarch64.rpm
nginx-debuginfo-1.20.1-1.module+el8.5.0+13723+ab304644.aarch64.rpm
nginx-debugsource-1.20.1-1.module+el8.5.0+13723+ab304644.aarch64.rpm
nginx-mod-http-image-filter-1.20.1-1.module+el8.5.0+13723+ab304644.aarch64.rpm
nginx-mod-http-image-filter-debuginfo-1.20.1-1.module+el8.5.0+13723+ab304644.aarch64.rpm
nginx-mod-http-perl-1.20.1-1.module+el8.5.0+13723+ab304644.aarch64.rpm
nginx-mod-http-perl-debuginfo-1.20.1-1.module+el8.5.0+13723+ab304644.aarch64.rpm
nginx-mod-http-xslt-filter-1.20.1-1.module+el8.5.0+13723+ab304644.aarch64.rpm
nginx-mod-http-xslt-filter-debuginfo-1.20.1-1.module+el8.5.0+13723+ab304644.aarch64.rpm
nginx-mod-mail-1.20.1-1.module+el8.5.0+13723+ab304644.aarch64.rpm
nginx-mod-mail-debuginfo-1.20.1-1.module+el8.5.0+13723+ab304644.aarch64.rpm
nginx-mod-stream-1.20.1-1.module+el8.5.0+13723+ab304644.aarch64.rpm
nginx-mod-stream-debuginfo-1.20.1-1.module+el8.5.0+13723+ab304644.aarch64.rpm
noarch:
nginx-all-modules-1.20.1-1.module+el8.5.0+13723+ab304644.noarch.rpm
nginx-filesystem-1.20.1-1.module+el8.5.0+13723+ab304644.noarch.rpm
ppc64le:
nginx-1.20.1-1.module+el8.5.0+13723+ab304644.ppc64le.rpm
nginx-debuginfo-1.20.1-1.module+el8.5.0+13723+ab304644.ppc64le.rpm
nginx-debugsource-1.20.1-1.module+el8.5.0+13723+ab304644.ppc64le.rpm
nginx-mod-http-image-filter-1.20.1-1.module+el8.5.0+13723+ab304644.ppc64le.rpm
nginx-mod-http-image-filter-debuginfo-1.20.1-1.module+el8.5.0+13723+ab304644.ppc64le.rpm
nginx-mod-http-perl-1.20.1-1.module+el8.5.0+13723+ab304644.ppc64le.rpm
nginx-mod-http-perl-debuginfo-1.20.1-1.module+el8.5.0+13723+ab304644.ppc64le.rpm
nginx-mod-http-xslt-filter-1.20.1-1.module+el8.5.0+13723+ab304644.ppc64le.rpm
nginx-mod-http-xslt-filter-debuginfo-1.20.1-1.module+el8.5.0+13723+ab304644.ppc64le.rpm
nginx-mod-mail-1.20.1-1.module+el8.5.0+13723+ab304644.ppc64le.rpm
nginx-mod-mail-debuginfo-1.20.1-1.module+el8.5.0+13723+ab304644.ppc64le.rpm
nginx-mod-stream-1.20.1-1.module+el8.5.0+13723+ab304644.ppc64le.rpm
nginx-mod-stream-debuginfo-1.20.1-1.module+el8.5.0+13723+ab304644.ppc64le.rpm
s390x:
nginx-1.20.1-1.module+el8.5.0+13723+ab304644.s390x.rpm
nginx-debuginfo-1.20.1-1.module+el8.5.0+13723+ab304644.s390x.rpm
nginx-debugsource-1.20.1-1.module+el8.5.0+13723+ab304644.s390x.rpm
nginx-mod-http-image-filter-1.20.1-1.module+el8.5.0+13723+ab304644.s390x.rpm
nginx-mod-http-image-filter-debuginfo-1.20.1-1.module+el8.5.0+13723+ab304644.s390x.rpm
nginx-mod-http-perl-1.20.1-1.module+el8.5.0+13723+ab304644.s390x.rpm
nginx-mod-http-perl-debuginfo-1.20.1-1.module+el8.5.0+13723+ab304644.s390x.rpm
nginx-mod-http-xslt-filter-1.20.1-1.module+el8.5.0+13723+ab304644.s390x.rpm
nginx-mod-http-xslt-filter-debuginfo-1.20.1-1.module+el8.5.0+13723+ab304644.s390x.rpm
nginx-mod-mail-1.20.1-1.module+el8.5.0+13723+ab304644.s390x.rpm
nginx-mod-mail-debuginfo-1.20.1-1.module+el8.5.0+13723+ab304644.s390x.rpm
nginx-mod-stream-1.20.1-1.module+el8.5.0+13723+ab304644.s390x.rpm
nginx-mod-stream-debuginfo-1.20.1-1.module+el8.5.0+13723+ab304644.s390x.rpm
x86_64:
nginx-1.20.1-1.module+el8.5.0+13723+ab304644.x86_64.rpm
nginx-debuginfo-1.20.1-1.module+el8.5.0+13723+ab304644.x86_64.rpm
nginx-debugsource-1.20.1-1.module+el8.5.0+13723+ab304644.x86_64.rpm
nginx-mod-http-image-filter-1.20.1-1.module+el8.5.0+13723+ab304644.x86_64.rpm
nginx-mod-http-image-filter-debuginfo-1.20.1-1.module+el8.5.0+13723+ab304644.x86_64.rpm
nginx-mod-http-perl-1.20.1-1.module+el8.5.0+13723+ab304644.x86_64.rpm
nginx-mod-http-perl-debuginfo-1.20.1-1.module+el8.5.0+13723+ab304644.x86_64.rpm
nginx-mod-http-xslt-filter-1.20.1-1.module+el8.5.0+13723+ab304644.x86_64.rpm
nginx-mod-http-xslt-filter-debuginfo-1.20.1-1.module+el8.5.0+13723+ab304644.x86_64.rpm
nginx-mod-mail-1.20.1-1.module+el8.5.0+13723+ab304644.x86_64.rpm
nginx-mod-mail-debuginfo-1.20.1-1.module+el8.5.0+13723+ab304644.x86_64.rpm
nginx-mod-stream-1.20.1-1.module+el8.5.0+13723+ab304644.x86_64.rpm
nginx-mod-stream-debuginfo-1.20.1-1.module+el8.5.0+13723+ab304644.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2021-23017
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is <[email protected]>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2022 Red Hat, Inc.
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