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SUSE: 2022:14940-1 Important dnsmasq Update - Remote DoS and Cache Fix

suse
Calendar Grey April 21, 2022
Scroller Suse Esm H88
Essential SUSE patch tackling significant dnsmasq vulnerabilities along with guidance for users on how to install.
An update that solves two vulnerabilities and has one errata 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). Non-security fixes: - Removed cache size limit (bsc#1138743). 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 Point of Sale 11-SP3: zypper in -t patch sleposp3-dnsmasq-14940=1 - SUSE Linux Enterprise Debuginfo 11-SP3: zypper in -t patch dbgsp3-dnsmasq-14940=1 Package List:

Topics%20covered

Topics Covered

security advisory denial of service cache poisoning SUSE dnsmasq

References

#1138743 #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 Debuginfo 11-SP3

SUSE Linux Enterprise Point of Sale 11-SP3

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

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

https://bugzilla.suse.com/1138743

https://bugzilla.suse.com/1183709

https://bugzilla.suse.com/1197872

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2022:14940-1
Rating: important

Topics%20covered

Topics Covered

security advisory denial of service cache poisoning SUSE dnsmasq

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