RedHat: RHSA-2021-4153:02 Moderate: dnsmasq security and bug fix update
Summary
The dnsmasq packages contain Dnsmasq, a lightweight DNS (Domain Name
Server) forwarder and DHCP (Dynamic Host Configuration Protocol) server.
Security Fix(es):
* dnsmasq: fixed outgoing port used when --server is used with an interface
name (CVE-2021-3448)
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 8.5 Release Notes linked from the References section.
Summary
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
References
https://access.redhat.com/security/cve/CVE-2021-3448 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.5_release_notes/
Package List
Red Hat Enterprise Linux AppStream (v. 8):
Source:
dnsmasq-2.79-19.el8.src.rpm
aarch64:
dnsmasq-2.79-19.el8.aarch64.rpm
dnsmasq-debuginfo-2.79-19.el8.aarch64.rpm
dnsmasq-debugsource-2.79-19.el8.aarch64.rpm
dnsmasq-utils-2.79-19.el8.aarch64.rpm
dnsmasq-utils-debuginfo-2.79-19.el8.aarch64.rpm
ppc64le:
dnsmasq-2.79-19.el8.ppc64le.rpm
dnsmasq-debuginfo-2.79-19.el8.ppc64le.rpm
dnsmasq-debugsource-2.79-19.el8.ppc64le.rpm
dnsmasq-utils-2.79-19.el8.ppc64le.rpm
dnsmasq-utils-debuginfo-2.79-19.el8.ppc64le.rpm
s390x:
dnsmasq-2.79-19.el8.s390x.rpm
dnsmasq-debuginfo-2.79-19.el8.s390x.rpm
dnsmasq-debugsource-2.79-19.el8.s390x.rpm
dnsmasq-utils-2.79-19.el8.s390x.rpm
dnsmasq-utils-debuginfo-2.79-19.el8.s390x.rpm
x86_64:
dnsmasq-2.79-19.el8.x86_64.rpm
dnsmasq-debuginfo-2.79-19.el8.x86_64.rpm
dnsmasq-debugsource-2.79-19.el8.x86_64.rpm
dnsmasq-utils-2.79-19.el8.x86_64.rpm
dnsmasq-utils-debuginfo-2.79-19.el8.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/
Topic
An update for dnsmasq 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.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64
Bugs Fixed
1921153 - failed to send packet: Network is unreachable when resolution is busy.
1927973 - dnsmasq --bind-dynamic stops replying to upstream queries
1939368 - CVE-2021-3448 dnsmasq: fixed outgoing port used when --server is used with an interface name
1947039 - typo in dnsmasq man page