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SUSE: 2021:0955-1 Important: OpenSSL Denial of Service Threat

suse
Calendar Grey March 25, 2021
Scroller Suse Esm H88
SUSE Security Update for openssl-1_1 resolves a vulnerability that may lead to service interruptions across various platforms. Find out more!
An update that fixes one vulnerability is now available

Summary

This update for openssl-1_1 fixes the security issue: * CVE-2021-3449: An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension but includes a signature_algorithms_cert extension, then a NULL pointer dereference will result, leading to a crash and a denial of service attack. OpenSSL TLS clients are not impacted by this issue. [bsc#1183852] 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 MicroOS 5.0: zypper in -t patch SUSE-SUSE-MicroOS-5.0-2021-955=1 - SUSE Linux Enterprise Module for Basesystem 15-SP3:

Topics%20covered

Topics Covered

security advisory denial of service important openssl SUSE Enterprise SUSE MicroOS

References

#1183852

Cross- CVE-2021-3449

CVSS scores:

CVE-2021-3449 (SUSE): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products:

SUSE MicroOS 5.0

SUSE Linux Enterprise Module for Basesystem 15-SP3

SUSE Linux Enterprise Module for Basesystem 15-SP2

https://www.suse.com/security/cve/CVE-2021-3449.html

https://bugzilla.suse.com/1183852

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2021:0955-1
Rating: important

Topics%20covered

Topics Covered

security advisory denial of service important openssl SUSE Enterprise SUSE MicroOS

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