Debian DLA-3532-1 : openssh - LTS 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.

- 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

Upgrade the openssh packages.

For Debian 10 buster, this problem has been fixed in version 1

Plugin Details

Severity: Critical

ID: 179924

File Name: debian_DLA-3532.nasl

Version: 1.1

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 8/17/2023

Updated: 12/22/2023

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless 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

Vulnerability Information

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

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

Detections

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