Debian DLA-2842-1 : apache-log4j2 - LTS security update

critical Nessus Plugin ID 156018

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Synopsis

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

Description

The remote Debian 9 host has packages installed that are affected by a vulnerability as referenced in the dla-2842 advisory.

- Apache Log4j2 <=2.14.1 JNDI features used in configuration, log messages, and parameters do not protect against attacker controlled LDAP and other JNDI related endpoints. An attacker who can control log messages or log message parameters can execute arbitrary code loaded from LDAP servers when message lookup substitution is enabled. From log4j 2.15.0, this behavior has been disabled by default. In previous releases (>2.10) this behavior can be mitigated by setting system property log4j2.formatMsgNoLookups to true or it can be mitigated in prior releases (<2.10) by removing the JndiLookup class from the classpath (example: zip -q -d log4j-core-*.jar org/apache/logging/log4j/core/lookup/JndiLookup.class).
(CVE-2021-44228)

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 apache-log4j2 packages.

For Debian 9 stretch, this problem has been fixed in version 2.7-2+deb9u1.

Plugin Details

Severity: Critical

ID: 156018

File Name: debian_DLA-2842.nasl

Version: 1.11

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 12/13/2021

Updated: 2/17/2023

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, 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: p-cpe:/a:debian:debian_linux:liblog4j2-java, cpe:/o:debian:debian_linux:9.0, p-cpe:/a:debian:debian_linux:liblog4j2-java-doc

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: 12/12/2021

Vulnerability Publication Date: 12/10/2021

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

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