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Ubuntu 20.04 LTS : Apache Log4j 2 vulnerability (USN-5203-1)

medium Nessus Plugin ID 156190

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 20.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-5203-1 advisory.

 Hideki Okamoto and Guy Lederfein discovered that Apache Log4j 2 did not protect against infinite recursion in lookup evaluation. A remote attacker could possibly use this issue to cause Apache Log4j 2 to crash, leading to a denial of service. Please see the following link for more information:
 https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/Log4Shell

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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

Solution

Update the affected liblog4j2-java package.

See Also

https://ubuntu.com/security/notices/USN-5203-1

Plugin Details

Severity: Medium

ID: 156190

File Name: ubuntu_USN-5203-1.nasl

Version: 1.10

Type: local

Agent: unix

Published: 12/19/2021

Updated: 8/27/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.6

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.7

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

CVSS Score Source: CVE-2021-45105

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.7

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:liblog4j2-java

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/19/2021

Vulnerability Publication Date: 12/10/2021

Reference Information

CVE: CVE-2021-45105

IAVA: 2021-A-0573

USN: 5203-1