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SUSE: 2021:0772-1 Important: Stunnel Denial of Service Fix

suse
Calendar Grey March 12, 2021
Dist Suse Esm H88
Critical advisory regarding stunnel addresses vulnerability CVE-2021-20230. Make certain that all systems are updated and fortified.
An update that solves one vulnerability and has one errata is now available

Summary

This update for stunnel fixes the following issues: - Security fix: [bsc#1177580, bsc#1182529, CVE-2021-20230] * "redirect" option does not properly handle "verifyChain = yes" 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 Module for Server Applications 15-SP2: zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP2-2021-772=1 Package List: - SUSE Linux Enterprise Module for Server Applications 15-SP2 (aarch64 ppc64le s390x x86_64): stunnel-5.57-3.11.1 stunnel-debuginfo-5.57-3.11.1 stunnel-debugsource-5.57-3.11.1

Topics%20covered

Topics Covered

security advisory DoS stunnel important fix SUSE Linux Enterprise

References

#1177580 #1182529

Cross- CVE-2021-20230

CVSS scores:

CVE-2021-20230 (NVD) : 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVE-2021-20230 (SUSE): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Products:

SUSE Linux Enterprise Module for Server Applications 15-SP2

https://www.suse.com/security/cve/CVE-2021-20230.html

https://bugzilla.suse.com/1177580

https://bugzilla.suse.com/1182529

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2021:0772-1
Rating: important

Topics%20covered

Topics Covered

security advisory DoS stunnel important fix SUSE Linux Enterprise

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