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SUSE SLES12 Security Update : openssl-1_1 (SUSE-SU-2021:0954-1)

medium Nessus Plugin ID 148150

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Synopsis

The remote SUSE host is missing one or more security updates.

Description

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]

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

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

SUSE OpenStack Cloud 9 :

zypper in -t patch SUSE-OpenStack-Cloud-9-2021-954=1

SUSE Linux Enterprise Software Development Kit 12-SP5 :

zypper in -t patch SUSE-SLE-SDK-12-SP5-2021-954=1

SUSE Linux Enterprise Server for SAP 12-SP4 :

zypper in -t patch SUSE-SLE-SAP-12-SP4-2021-954=1

SUSE Linux Enterprise Server 12-SP5 :

zypper in -t patch SUSE-SLE-SERVER-12-SP5-2021-954=1

SUSE Linux Enterprise Server 12-SP4-LTSS :

zypper in -t patch SUSE-SLE-SERVER-12-SP4-LTSS-2021-954=1

See Also

https://bugzilla.suse.com/show_bug.cgi?id=1183852

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

http://www.nessus.org/u?4bc2297f

Plugin Details

Severity: Medium

ID: 148150

File Name: suse_SU-2021-0954-1.nasl

Version: 1.7

Type: local

Agent: unix

Published: 3/26/2021

Updated: 1/8/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.1

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.4

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2021-3449

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.3

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:novell:suse_linux:12, p-cpe:/a:novell:suse_linux:libopenssl1_1-debuginfo, p-cpe:/a:novell:suse_linux:openssl, p-cpe:/a:novell:suse_linux:openssl-1_1-debugsource, p-cpe:/a:novell:suse_linux:openssl-1_1-debuginfo, p-cpe:/a:novell:suse_linux:libopenssl1_1

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/25/2021

Vulnerability Publication Date: 3/25/2021

Reference Information

CVE: CVE-2021-3449

IAVA: 2021-A-0149-S