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

critical Nessus Plugin ID 156018

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.

See Also

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1001478

http://www.nessus.org/u?a7f9f2b8

https://www.debian.org/lts/security/2021/dla-2842

https://security-tracker.debian.org/tracker/CVE-2021-44228

https://packages.debian.org/source/stretch/apache-log4j2

Plugin Details

Severity: Critical

ID: 156018

File Name: debian_DLA-2842.nasl

Version: 1.8

Type: local

Agent: unix

Published: 12/13/2021

Updated: 8/31/2022

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

Risk Information

VPR

Risk Factor: Critical

Score: 10

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 8.1

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

Temporal Vector: E:H/RL:OF/RC: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: E:H/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:liblog4j2-java, p-cpe:/a:debian:debian_linux:liblog4j2-java-doc, cpe:/o:debian:debian_linux:9.0

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 Dates: 12/24/2021

Exploitable With

CANVAS (CANVAS)

Reference Information

CVE: CVE-2021-44228

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