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SUSE SLES12 Security Update : openssh (SUSE-SU-2021:3875-1)

high Nessus Plugin ID 155837

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Synopsis

The remote SUSE host is missing a security update.

Description

The remote SUSE Linux SLES12 / SLES_SAP12 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2021:3875-1 advisory.

 - sshd in OpenSSH 6.2 through 8.x before 8.8, when certain non-default configurations are used, allows privilege escalation because supplemental groups are not initialized as expected. Helper programs for AuthorizedKeysCommand and AuthorizedPrincipalsCommand may run with privileges associated with group memberships of the sshd process, if the configuration specifies running the command as a different user.
 (CVE-2021-41617)

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 openssh, openssh-askpass-gnome, openssh-fips and / or openssh-helpers packages.

See Also

https://bugzilla.suse.com/1190975

https://www.suse.com/security/cve/CVE-2021-41617

http://www.nessus.org/u?52585440

Plugin Details

Severity: High

ID: 155837

File Name: suse_SU-2021-3875-1.nasl

Version: 1.5

Type: local

Agent: unix

Published: 12/3/2021

Updated: 7/13/2023

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: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 4.4

Temporal Score: 3.3

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

CVSS Score Source: CVE-2021-41617

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.1

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

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

Vulnerability Information

CPE: cpe:/o:novell:suse_linux:12, p-cpe:/a:novell:suse_linux:openssh-helpers, p-cpe:/a:novell:suse_linux:openssh, p-cpe:/a:novell:suse_linux:openssh-fips, p-cpe:/a:novell:suse_linux:openssh-askpass-gnome

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: 12/2/2021

Vulnerability Publication Date: 9/26/2021

Reference Information

CVE: CVE-2021-41617

IAVA: 2021-A-0474-S

SuSE: SUSE-SU-2021:3875-1