Apache Log4Shell RCE detection via callback correlation (Direct Check SSH)

critical Nessus Plugin ID 156166

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Synopsis

The remote SSH service allows remote command execution via Log4Shell.

Description

The remote host appears to be running SSH. SSH itself is not vulnerable to Log4Shell; however, the SSH server could potentially be affected if it attempts to log data via a vulnerable log4j library.

This plugin requires that both the scanner and target machine have internet access.

Solution

Upgrade to Apache Log4j version 2.15.0 or later, or apply the vendor mitigation.

Upgrading to the latest versions for Apache Log4j is highly recommended as intermediate versions / patches have known high severity vulnerabilities and the vendor is updating their advisories often as new research and knowledge about the impact of Log4j is discovered. Refer to https://logging.apache.org/log4j/2.x/security.html for the latest versions.

Plugin Details

Severity: Critical

ID: 156166

File Name: apache_log4shell_ssh.nbin

Version: 1.129

Type: remote

Family: Misc.

Published: 12/17/2021

Updated: 12/18/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 10.0

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 8.1

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

CVSS Score Source: CVE-2021-44228

CVSS v3

Risk Factor: Critical

Base Score: 10

Temporal Score: 9.5

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

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

Vulnerability Information

CPE: cpe:/a:apache:log4j

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/10/2021

Vulnerability Publication Date: 12/9/2021

CISA Known Exploited Vulnerability Due Dates: 12/24/2021

Exploitable With

CANVAS (CANVAS)

Core Impact

Reference Information

CVE: CVE-2021-44228

IAVA: 0001-A-0650, 2021-A-0573

Detections

Analytics