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SUSE SLED15 / SLES15 Security Update : openssh (SUSE-SU-2021:4153-1)

high Nessus Plugin ID 156287

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Synopsis

The remote SUSE host is missing a security update.

Description

The remote SUSE Linux SLED15 / SLES15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2021:4153-1 advisory.

 - ssh-agent in OpenSSH before 8.5 has a double free that may be relevant in a few less-common scenarios, such as unconstrained agent-socket access on a legacy operating system, or the forwarding of an agent to an attacker-controlled host. (CVE-2021-28041)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://bugzilla.suse.com/1183137

https://www.suse.com/security/cve/CVE-2021-28041

http://www.nessus.org/u?d9a130c5

Plugin Details

Severity: High

ID: 156287

File Name: suse_SU-2021-4153-1.nasl

Version: 1.4

Type: local

Agent: unix

Published: 12/25/2021

Updated: 7/14/2023

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: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2021-28041

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

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

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

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:openssh-server, p-cpe:/a:novell:suse_linux:openssh-helpers, p-cpe:/a:novell:suse_linux:openssh-clients, p-cpe:/a:novell:suse_linux:openssh-common, p-cpe:/a:novell:suse_linux:openssh, p-cpe:/a:novell:suse_linux:openssh-fips, p-cpe:/a:novell:suse_linux:openssh-askpass-gnome, cpe:/o:novell:suse_linux:15

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

Exploit Ease: No known exploits are available

Patch Publication Date: 12/22/2021

Vulnerability Publication Date: 3/4/2021

Reference Information

CVE: CVE-2021-28041

IAVA: 2021-A-0121-S

SuSE: SUSE-SU-2021:4153-1