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Debian dla-3532 : openssh-client - security update

critical Nessus Plugin ID 179924

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Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 10 host has packages installed that are affected by a vulnerability as referenced in the dla-3532 advisory.

 - ----------------------------------------------------------------------- Debian LTS Advisory DLA-3532-1 [email protected] https://www.debian.org/lts/security/ Utkarsh Gupta August 17, 2023 https://wiki.debian.org/LTS
 - -----------------------------------------------------------------------

 Package : openssh Version : 1:7.9p1-10+deb10u3 CVE ID : CVE-2023-38408 Debian Bug : 1042460

 It was discovered that OpenSSH incorrectly handled loading certain PKCS#11 providers. If a user forwarded their ssh-agent to an untrusted system, a remote attacker could possibly use this issue to load arbitrary libraries from the users system and execute arbitrary code.

 In addition to the above security issue, this update also fixed another bug - bad interaction between the ssh_config ConnectTimeout and ConnectionAttempts directives - connection attempts after the first attempt were ignoring the requested timeout. More details about this can be found at https://bugzilla.mindrot.org/show_bug.cgi?id=2918.

 For Debian 10 buster, this problem has been fixed in version 1:7.9p1-10+deb10u3.

 We recommend that you upgrade your openssh packages.

 For the detailed security status of openssh please refer to its security tracker page at:
 https://security-tracker.debian.org/tracker/openssh

 Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

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

Solution

Upgrade the openssh-client packages.

See Also

https://security-tracker.debian.org/tracker/source-package/openssh

https://security-tracker.debian.org/tracker/CVE-2023-38408

https://packages.debian.org/source/buster/openssh

Plugin Details

Severity: Critical

ID: 179924

File Name: debian_DLA-3532.nasl

Version: 1.2

Type: local

Agent: unix

Published: 8/17/2023

Updated: 1/22/2025

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

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

CVSS v4

Risk Factor: Critical

Base Score: 9.3

Threat Score: 8.9

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:ssh-askpass-gnome, cpe:/o:debian:debian_linux:10.0, p-cpe:/a:debian:debian_linux:ssh, p-cpe:/a:debian:debian_linux:openssh-sftp-server, p-cpe:/a:debian:debian_linux:openssh-server, p-cpe:/a:debian:debian_linux:openssh-tests, p-cpe:/a:debian:debian_linux:openssh-client

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/17/2023

Vulnerability Publication Date: 7/20/2023

Reference Information

CVE: CVE-2023-38408

IAVA: 2023-A-0377-S