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Red Hat: RHSA-2023-3741-01 Critical Update for c-ares DoS Vulnerability Fix

red hat
Calendar Grey June 21, 2023
Dist Redhat Esm H88
Ubuntu announced a critical patch for OpenSSL to tackle a potential Remote Code Execution vulnerability in its operating systems.
An update for c-ares is now available for Red Hat Enterprise Linux 7

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 c-ares C library defines asynchronous DNS (Domain Name System) requests and provides name resolving API.
Security Fix(es):
* c-ares: 0-byte UDP payload Denial of Service (CVE-2023-32067)
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 red hat DoS important c-ares

References

https://access.redhat.com/security/cve/CVE-2023-32067 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: c-ares-1.10.0-3.el7_9.1.src.rpm
x86_64: c-ares-1.10.0-3.el7_9.1.i686.rpm c-ares-1.10.0-3.el7_9.1.x86_64.rpm c-ares-debuginfo-1.10.0-3.el7_9.1.i686.rpm c-ares-debuginfo-1.10.0-3.el7_9.1.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: c-ares-debuginfo-1.10.0-3.el7_9.1.i686.rpm c-ares-debuginfo-1.10.0-3.el7_9.1.x86_64.rpm c-ares-devel-1.10.0-3.el7_9.1.i686.rpm c-ares-devel-1.10.0-3.el7_9.1.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: c-ares-1.10.0-3.el7_9.1.src.rpm
x86_64: c-ares-1.10.0-3.el7_9.1.i686.rpm c-ares-1.10.0-3.el7_9.1.x86_64.rpm c-ares-debuginfo-1.10.0-3.el7_9.1.i686.rpm c-ares-debuginfo-1.10.0-3.el7_9.1.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
x86_64: c-ares-debuginfo-1.10.0-3.el7_9.1.i686.rpm c-ares-debuginfo-1.10.0-3.el7_9.1.x86_64.rpm c-ares-devel-1.10.0-3.el7_9.1.i686.rpm c-ares-devel-1.10.0-3.el7_9.1.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source: c-ares-1.10.0-3.el7_9.1.src.rpm
ppc64: c-ares-1.10.0-3.el7_9.1.ppc.rpm c-ares-1.10.0-3.el7_9.1.ppc64.rpm c-ares-debuginfo-1.10.0-3.el7_9.1.ppc.rpm c-ares-debuginfo-1.10.0-3.el7_9.1.ppc64.rpm c-ares-devel-1.10.0-3.el7_9.1.ppc.rpm c-ares-devel-1.10.0-3.el7_9.1.ppc64.rpm
ppc64le:

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:3741-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:3741
Issue date: 2023-06-21

Topic

An update for c-ares is now available for Red Hat Enterprise Linux 7.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 red hat DoS important c-ares

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64

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

Bugs Fixed

2209502 - CVE-2023-32067 c-ares: 0-byte UDP payload Denial of Service

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