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SUSE: 2022:1288-1 Critical Update: Remote DoS Vulnerability in dnsmasq

suse
Calendar Grey April 21, 2022
Dist Suse Esm H88
dnsmasq release addresses critical vulnerabilities: risks of DNS cache corruption and possible remote exploitation causing service interruptions.
An update that fixes two vulnerabilities is now available

Summary

This update for dnsmasq fixes the following issues: - CVE-2021-3448: Fixed a potential DNS cache poisoning issue due to a constant outgoing port being used when for certain use cases of the --server option (bsc#1183709). - CVE-2022-0934: Fixed an invalid memory access that could lead to remote denial of service via crafted packet (bsc#1197872). Patch Instructions: To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: - SUSE Linux Enterprise Server for SAP 15: zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-2022-1288=1 - SUSE Linux Enterprise Server 15-LTSS: zypper in -t patch SUSE-SLE-Product-SLES-15-2022-1288=1 - SUSE Linux Enterprise High Performance Computing 15-LTSS:

Topics%20covered

Topics Covered

security advisory remote DoS important dnsmasq DNS cache fix

References

#1183709 #1197872

Cross- CVE-2021-3448 CVE-2022-0934

CVSS scores:

CVE-2021-3448 (NVD) : 4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

CVE-2021-3448 (SUSE): 4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

CVE-2022-0934 (SUSE): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Affected Products:

SUSE Linux Enterprise High Performance Computing 15-ESPOS

SUSE Linux Enterprise High Performance Computing 15-LTSS

SUSE Linux Enterprise Server 15-LTSS

SUSE Linux Enterprise Server for SAP 15

https://www.suse.com/security/cve/CVE-2021-3448.html

https://www.suse.com/security/cve/CVE-2022-0934.html

https://bugzilla.suse.com/1183709

https://bugzilla.suse.com/1197872

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2022:1288-1
Rating: important

Topics%20covered

Topics Covered

security advisory remote DoS important dnsmasq DNS cache fix

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