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SUSE 15.5: 2023:4635-2 important: OpenSSL-3 Denial of Service patch

suse
Calendar Grey December 4, 2023
Dist Suse Esm H88
An essential security update for openssl-3 addresses a denial of service flaw and introduces important enhancements for SUSE environments.
* bsc#1194187 * bsc#1207472 * bsc#1216922 Cross-References:

Summary

## This update for openssl-3 fixes the following issues: * CVE-2023-5678: Fixed generating and checking of excessively long X9.42 DH keys that resulted in a possible Denial of Service (bsc#1216922). Bug fixes: * The default /etc/ssl/openssl3.cnf file will include any configuration files that other packages might place into /etc/ssl/engines3.d/ and /etc/ssl/engdef3.d/. * Create the two new necessary directores for the above patch. [bsc#1194187, bsc#1207472] ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: * openSUSE Leap 15.5 zypper in -t patch SUSE-2023-4635=1 openSUSE-SLE-15.5-2023-4635=1 * Basesystem Module 15-SP5

Topics%20covered

Topics Covered

security advisory update critical DoS OpenSSL SUSE

References

* bsc#1194187

* bsc#1207472

* bsc#1216922

Cross-

* CVE-2023-5678

CVSS scores:

* CVE-2023-5678 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

* CVE-2023-5678 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected Products:

* Basesystem Module 15-SP5

* openSUSE Leap 15.5

* SUSE Linux Enterprise Desktop 15 SP5

* SUSE Linux Enterprise High Performance Computing 15 SP5

* SUSE Linux Enterprise Real Time 15 SP5

* SUSE Linux Enterprise Server 15 SP5

* SUSE Linux Enterprise Server for SAP Applications 15 SP5

An update that solves one vulnerability and has two security fixes can now be

installed.

##

* https://www.suse.com/security/cve/CVE-2023-5678.html

* https://bugzilla.suse.com/show_bug.cgi?id=1194187

* https://bugzilla.suse.com/show_bug.cgi?id=1207472

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2023:4635-1
Rating: important

Topics%20covered

Topics Covered

security advisory update critical DoS OpenSSL SUSE

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