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AUSCERT External Security Bulletin Redistribution
ESB-2022.5897
dnsmasq security and bug fix update
16 November 2022
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AusCERT Security Bulletin Summary
---------------------------------
Product: dnsmasq
Publisher: Red Hat
Operating System: Red Hat
Resolution: Patch/Upgrade
CVE Names: CVE-2022-0934
Original Bulletin:
https://access.redhat.com/errata/RHSA-2022:8070
Comment: CVSS (Max): 6.5 CVE-2022-0934 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L)
CVSS Source: Red Hat
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
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Red Hat Security Advisory
Synopsis: Moderate: dnsmasq security and bug fix update
Advisory ID: RHSA-2022:8070-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:8070
Issue date: 2022-11-15
CVE Names: CVE-2022-0934
=====================================================================
1. Summary:
An update for dnsmasq is now available for Red Hat Enterprise Linux 9.
Red Hat Product Security has rated this update as having a security impact
of Moderate. 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. 9) - aarch64, ppc64le, s390x, x86_64
3. Description:
The dnsmasq packages contain Dnsmasq, a lightweight DNS (Domain Name
Server) forwarder and DHCP (Dynamic Host Configuration Protocol) server.
Security Fix(es):
* dnsmasq: Heap use after free in dhcp6_no_relay (CVE-2022-0934)
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 9.1 Release Notes linked from 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/):
2057075 - CVE-2022-0934 dnsmasq: Heap use after free in dhcp6_no_relay
2120711 - dnsmasq high CPU usage in 4.11 spoke deployment or after 4.10.21 to 4.11.0-rc.1 upgrade on an SNO node [rhel9]
6. Package List:
Red Hat Enterprise Linux AppStream (v. 9):
Source:
dnsmasq-2.85-5.el9.src.rpm
aarch64:
dnsmasq-2.85-5.el9.aarch64.rpm
dnsmasq-debuginfo-2.85-5.el9.aarch64.rpm
dnsmasq-debugsource-2.85-5.el9.aarch64.rpm
dnsmasq-utils-2.85-5.el9.aarch64.rpm
dnsmasq-utils-debuginfo-2.85-5.el9.aarch64.rpm
ppc64le:
dnsmasq-2.85-5.el9.ppc64le.rpm
dnsmasq-debuginfo-2.85-5.el9.ppc64le.rpm
dnsmasq-debugsource-2.85-5.el9.ppc64le.rpm
dnsmasq-utils-2.85-5.el9.ppc64le.rpm
dnsmasq-utils-debuginfo-2.85-5.el9.ppc64le.rpm
s390x:
dnsmasq-2.85-5.el9.s390x.rpm
dnsmasq-debuginfo-2.85-5.el9.s390x.rpm
dnsmasq-debugsource-2.85-5.el9.s390x.rpm
dnsmasq-utils-2.85-5.el9.s390x.rpm
dnsmasq-utils-debuginfo-2.85-5.el9.s390x.rpm
x86_64:
dnsmasq-2.85-5.el9.x86_64.rpm
dnsmasq-debuginfo-2.85-5.el9.x86_64.rpm
dnsmasq-debugsource-2.85-5.el9.x86_64.rpm
dnsmasq-utils-2.85-5.el9.x86_64.rpm
dnsmasq-utils-debuginfo-2.85-5.el9.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-2022-0934
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9/html/9.1_release_notes/index
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2022 Red Hat, Inc.
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