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Red Hat Enterprise Linux 8 RHSA-2023:2771 Moderate: Unbound DNS Attack

red hat
Calendar Grey May 16, 2023
Dist Redhat Esm H88
A significant enhancement for Unbound in RHEL 8 resolves a moderate vulnerability impacting DNS functionality. Find out more.
An update for unbound 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

The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver.
Security Fix(es):
* unbound: NRDelegation attack leads to uncontrolled resource consumption (Non-Responsive Delegation Attack) (CVE-2022-3204)
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.
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.8 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory Red Hat Enterprise Linux moderate severity attack mitigation resource consumption DNS attack unbound update

References

https://access.redhat.com/security/cve/CVE-2022-3204 https://access.redhat.com/security/updates/classification#moderate https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/8/html/8.8_release_notes/index

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: unbound-1.16.2-5.el8.src.rpm
aarch64: python3-unbound-1.16.2-5.el8.aarch64.rpm python3-unbound-debuginfo-1.16.2-5.el8.aarch64.rpm unbound-1.16.2-5.el8.aarch64.rpm unbound-debuginfo-1.16.2-5.el8.aarch64.rpm unbound-debugsource-1.16.2-5.el8.aarch64.rpm unbound-devel-1.16.2-5.el8.aarch64.rpm unbound-libs-1.16.2-5.el8.aarch64.rpm unbound-libs-debuginfo-1.16.2-5.el8.aarch64.rpm
ppc64le: python3-unbound-1.16.2-5.el8.ppc64le.rpm python3-unbound-debuginfo-1.16.2-5.el8.ppc64le.rpm unbound-1.16.2-5.el8.ppc64le.rpm unbound-debuginfo-1.16.2-5.el8.ppc64le.rpm unbound-debugsource-1.16.2-5.el8.ppc64le.rpm unbound-devel-1.16.2-5.el8.ppc64le.rpm unbound-libs-1.16.2-5.el8.ppc64le.rpm unbound-libs-debuginfo-1.16.2-5.el8.ppc64le.rpm
s390x: python3-unbound-1.16.2-5.el8.s390x.rpm python3-unbound-debuginfo-1.16.2-5.el8.s390x.rpm unbound-1.16.2-5.el8.s390x.rpm unbound-debuginfo-1.16.2-5.el8.s390x.rpm unbound-debugsource-1.16.2-5.el8.s390x.rpm unbound-devel-1.16.2-5.el8.s390x.rpm unbound-libs-1.16.2-5.el8.s390x.rpm unbound-libs-debuginfo-1.16.2-5.el8.s390x.rpm
x86_64: python3-unbound-1.16.2-5.el8.x86_64.rpm python3-unbound-debuginfo-1.16.2-5.el8.i686.rpm python3-unbound-debuginfo-1.16.2-5.el8.x86_64.rpm unbound-1.16.2-5.el8.x86_64.rpm

Read the Full Advisory


Advisory ID: RHSA-2023:2771-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:2771
Issue date: 2023-05-16

Topic

An update for unbound is now available for Red Hat Enterprise Linux 8.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory Red Hat Enterprise Linux moderate severity attack mitigation resource consumption DNS attack unbound update

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64

Bugs Fixed

2128947 - CVE-2022-3204 unbound: NRDelegation attack leads to uncontrolled resource consumption (Non-Responsive Delegation Attack)

2135322 - failing devel man pages for rhel 8

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