Apache Log4j 1.2 JMSAppender Remote Code Execution (CVE-2021-4104)

high Nessus Plugin ID 156103

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Synopsis

A package installed on the remote host is affected by a remote code execution vulnerability.

Description

The version of Apache Log4j on the remote host is 1.2. It is, therefore, affected by a remote code execution vulnerability when specifically configured to use JMSAppender.

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

Solution

Upgrade to Apache Log4j version 2.16.0 or later since 1.x is end of life.

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.

See Also

http://www.nessus.org/u?33485eac

https://access.redhat.com/security/cve/CVE-2021-4104

Plugin Details

Severity: High

ID: 156103

File Name: apache_log4j_1_2.nasl

Version: 1.9

Type: local

Agent: windows, macosx, unix

Family: Misc.

Published: 12/15/2021

Updated: 4/11/2022

Configuration: Enable thorough checks

Supported Sensors: Nessus Agent

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6

Temporal Score: 4.4

Vector: AV:N/AC:M/Au:S/C:P/I:P/A:P

Temporal Vector: E:U/RL:OF/RC:C

CVSS Score Source: CVE-2021-4104

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: cpe:/a:apache:log4j

Required KB Items: installed_sw/Apache Log4j

Exploit Ease: No known exploits are available

Patch Publication Date: 12/14/2021

Vulnerability Publication Date: 12/14/2021

Reference Information

CVE: CVE-2021-4104

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