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SUSE: 2021:0955-2 Important: OpenSSL-1_1 Denial Of Service

suse
Calendar Grey July 13, 2022
Scroller Suse
The latest openssl-1_1 update resolves major security vulnerabilities affecting SUSE Linux components. Crucial patches have been released.
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 Linux Enterprise Module for Certifications 15-SP3:

Topics%20covered

Topics Covered

security advisory denial of service critical issue important openssl suse linux tls

References

#1183852

Cross- CVE-2021-3449

CVSS scores:

CVE-2021-3449 (NVD) : 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

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 Linux Enterprise Module for Certifications 15-SP3

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

https://bugzilla.suse.com/1183852

Severity
important
Lowest
Low
Medium
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Critical

Announcement ID: SUSE-SU-2021:0955-2
Rating: important

Topics%20covered

Topics Covered

security advisory denial of service critical issue important openssl suse linux tls

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