What is RHSA-2021:2258?

RHSA-2021:2258 is a security advisory published by Red Hat Product Security with High severity. Red Hat Security Advisory: rh-nginx118-nginx security update

Which CVE IDs does RHSA-2021:2258 cover?

RHSA-2021:2258 covers the following CVE IDs: CVE-2021-23017. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2021:2258?

RHSA-2021:2258 has a CVSS v3 base score of 8.1, published by Red Hat Product Security.

Which products are affected by RHSA-2021:2258?

RHSA-2021:2258 affects 55 products, including: Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7); Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7); Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7); rh-nginx118-nginx-1:1.18.0-3.el7.ppc64le as a component of Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7); rh-nginx118-nginx-1:1.18.0-3.el7.ppc64le as a component of Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7); and others — see the full list on the advisory page.

RHSA-2021:2258HighCVSS 8.1

Red Hat Security Advisory: rh-nginx118-nginx security update

Vendor

Red Hat Product Security

Published

June 7, 2021

Last Modified

August 4, 2026

🔗 CVE IDs covered (1)

CVE-2021-23017 →

📋 Description

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

🎯 Affected products55

Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7)
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7)
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7)
rh-nginx118-nginx-1:1.18.0-3.el7.ppc64le as a component of Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7)
rh-nginx118-nginx-1:1.18.0-3.el7.ppc64le as a component of Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7)
rh-nginx118-nginx-1:1.18.0-3.el7.s390x as a component of Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7)
rh-nginx118-nginx-1:1.18.0-3.el7.s390x as a component of Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7)
rh-nginx118-nginx-1:1.18.0-3.el7.src as a component of Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7)
rh-nginx118-nginx-1:1.18.0-3.el7.src as a component of Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7)
rh-nginx118-nginx-1:1.18.0-3.el7.src as a component of Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7)
rh-nginx118-nginx-1:1.18.0-3.el7.x86_64 as a component of Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7)
rh-nginx118-nginx-1:1.18.0-3.el7.x86_64 as a component of Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7)
rh-nginx118-nginx-1:1.18.0-3.el7.x86_64 as a component of Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7)
rh-nginx118-nginx-debuginfo-1:1.18.0-3.el7.ppc64le as a component of Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7)
rh-nginx118-nginx-debuginfo-1:1.18.0-3.el7.ppc64le as a component of Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7)
rh-nginx118-nginx-debuginfo-1:1.18.0-3.el7.s390x as a component of Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7)
rh-nginx118-nginx-debuginfo-1:1.18.0-3.el7.s390x as a component of Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7)
rh-nginx118-nginx-debuginfo-1:1.18.0-3.el7.x86_64 as a component of Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7)
rh-nginx118-nginx-debuginfo-1:1.18.0-3.el7.x86_64 as a component of Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7)
rh-nginx118-nginx-debuginfo-1:1.18.0-3.el7.x86_64 as a component of Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7)
rh-nginx118-nginx-mod-http-image-filter-1:1.18.0-3.el7.ppc64le as a component of Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7)
rh-nginx118-nginx-mod-http-image-filter-1:1.18.0-3.el7.ppc64le as a component of Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7)
rh-nginx118-nginx-mod-http-image-filter-1:1.18.0-3.el7.s390x as a component of Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7)
rh-nginx118-nginx-mod-http-image-filter-1:1.18.0-3.el7.s390x as a component of Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7)
rh-nginx118-nginx-mod-http-image-filter-1:1.18.0-3.el7.x86_64 as a component of Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7)
rh-nginx118-nginx-mod-http-image-filter-1:1.18.0-3.el7.x86_64 as a component of Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7)
rh-nginx118-nginx-mod-http-image-filter-1:1.18.0-3.el7.x86_64 as a component of Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7)
rh-nginx118-nginx-mod-http-perl-1:1.18.0-3.el7.ppc64le as a component of Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7)
rh-nginx118-nginx-mod-http-perl-1:1.18.0-3.el7.ppc64le as a component of Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7)
rh-nginx118-nginx-mod-http-perl-1:1.18.0-3.el7.s390x as a component of Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7)
+25 more not shown

✅ Remediation

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.

🔗 CVE IDs covered (1)

📋 Description

🎯 Affected products55

✅ Remediation

🔗 References (4)