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SUSE: 2021:0170-1 Critical: dhclient Buffer Overflow and Exploitation Risk

suse
Calendar Grey January 19, 2021
Dist Suse Esm H88
Important security patch for dnsmasq addresses various vulnerabilities impacting SUSE distributions. Verify correct application of updates.
An update that fixes 7 vulnerabilities is now available

Summary

This update for dnsmasq fixes the following issues: - bsc#1177077: Fixed DNSpooq vulnerabilities - CVE-2020-25684, CVE-2020-25685, CVE-2020-25686: Fixed multiple Cache Poisoning attacks. - CVE-2020-25681, CVE-2020-25682, CVE-2020-25683, CVE-2020-25687: Fixed multiple potential Heap-based overflows when DNSSEC is enabled. - Retry query to other servers on receipt of SERVFAIL rcode (bsc#1176076) 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 OpenStack Cloud Crowbar 9: zypper in -t patch SUSE-OpenStack-Cloud-Crowbar-9-2021-166=1 - SUSE OpenStack Cloud Crowbar 8: zypper in -t patch SUSE-OpenStack-Cloud-Crowbar-8-2021-166=1

Topics%20covered

Topics Covered

security advisory patch important heap overflow cache poisoning SUSE dnsmasq

References

#1176076 #1177077

Cross- CVE-2020-25681 CVE-2020-25682 CVE-2020-25683

CVE-2020-25684 CVE-2020-25685 CVE-2020-25686

CVE-2020-25687

Affected Products:

SUSE OpenStack Cloud Crowbar 9

SUSE OpenStack Cloud Crowbar 8

SUSE OpenStack Cloud 9

SUSE OpenStack Cloud 8

SUSE OpenStack Cloud 7

SUSE Linux Enterprise Server for SAP 12-SP4

SUSE Linux Enterprise Server for SAP 12-SP3

SUSE Linux Enterprise Server for SAP 12-SP2

SUSE Linux Enterprise Server 12-SP5

SUSE Linux Enterprise Server 12-SP4-LTSS

SUSE Linux Enterprise Server 12-SP3-LTSS

SUSE Linux Enterprise Server 12-SP3-BCL

SUSE Linux Enterprise Server 12-SP2-LTSS

SUSE Linux Enterprise Server 12-SP2-BCL

SUSE Enterpri...

Read the Full Advisory

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2021:0166-1
Rating: important

Topics%20covered

Topics Covered

security advisory patch important heap overflow cache poisoning SUSE dnsmasq

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