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SUSE: 2021:0954-2 Critical: OpenSSL-1_1 Denial Of Service

suse
Calendar Grey March 25, 2021
Scroller Suse Esm H88
SUSE releases a vital security patch for openssl-1_1 to tackle a significant denial of service vulnerability.
An update that fixes one vulnerability is now available

Summary

This update for openssl-1_1 fixes the following 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 OpenStack Cloud Crowbar 9: zypper in -t patch SUSE-OpenStack-Cloud-Crowbar-9-2021-954=1

Topics%20covered

Topics Covered

security advisory denial of service critical openssl-1_1 suse openstack cloud

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 OpenStack Cloud Crowbar 9

SUSE OpenStack Cloud 9

SUSE Linux Enterprise Software Development Kit 12-SP5

SUSE Linux Enterprise Server for SAP 12-SP4

SUSE Linux Enterprise Server 12-SP5

SUSE Linux Enterprise Server 12-SP4-LTSS

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-2021:0954-1
Rating: important

Topics%20covered

Topics Covered

security advisory denial of service critical openssl-1_1 suse openstack cloud

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