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 1. Plugins
 2. Nessus
 3. 179148

 1. Nessus


RHEL 8 : OPENSSH (RHSA-2023:4384)

CRITICAL NESSUS PLUGIN ID 179148

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SYNOPSIS

The remote Red Hat host is missing a security update.


DESCRIPTION

The remote Redhat Enterprise Linux 8 host has packages installed that are
affected by a vulnerability as referenced in the RHSA-2023:4384 advisory.

- The PKCS#11 feature in ssh-agent in OpenSSH before 9.3p2 has an insufficiently
trustworthy search path, leading to remote code execution if an agent is
forwarded to an attacker-controlled system. (Code in /usr/lib is not necessarily
safe for loading into ssh-agent.) NOTE: this issue exists because of an
incomplete fix for CVE-2016-10009. (CVE-2023-38408)

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://access.redhat.com/security/cve/CVE-2023-38408

https://access.redhat.com/errata/RHSA-2023:4384

PLUGIN DETAILS

Severity: Critical

ID: 179148

File Name: redhat-RHSA-2023-4384.nasl

Version: 1.0

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 8/1/2023

Updated: 8/1/2023





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

RISK INFORMATION



VPR

Risk Factor: Medium

Score: 5.2

CVSS V2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

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



CVSS Score Source: CVE-2023-38408

CVSS V3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

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



VULNERABILITY INFORMATION

CPE: cpe:/o:redhat:rhel_tus:8.2,
p-cpe:/a:redhat:enterprise_linux:pam_ssh_agent_auth,
p-cpe:/a:redhat:enterprise_linux:openssh-server,
p-cpe:/a:redhat:enterprise_linux:openssh-clients,
p-cpe:/a:redhat:enterprise_linux:openssh-keycat,
p-cpe:/a:redhat:enterprise_linux:openssh-ldap,
p-cpe:/a:redhat:enterprise_linux:openssh-cavs, cpe:/o:redhat:rhel_e4s:8.2,
p-cpe:/a:redhat:enterprise_linux:openssh, cpe:/o:redhat:rhel_aus:8.2,
p-cpe:/a:redhat:enterprise_linux:openssh-askpass

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

Exploit Available: true

Exploit Ease: Exploits are available



Patch Publication Date: 8/1/2023

Vulnerability Publication Date: 7/20/2023



REFERENCE INFORMATION

CVE: CVE-2023-38408

CWE: 94

IAVA: 2023-A-0377

RHSA: 2023:4384

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