Ubuntu 18.04 LTS : Apache Log4j vulnerability (USN-4495-1)

critical Nessus Plugin ID 140591
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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 18.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-4495-1 advisory.

- Included in Log4j 1.2 is a SocketServer class that is vulnerable to deserialization of untrusted data which can be exploited to remotely execute arbitrary code when combined with a deserialization gadget when listening to untrusted network traffic for log data. This affects Log4j versions up to 1.2 up to 1.2.17.
(CVE-2019-17571)

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 liblog4j1.2-java package.

See Also

https://ubuntu.com/security/notices/USN-4495-1

Plugin Details

Severity: Critical

ID: 140591

File Name: ubuntu_USN-4495-1.nasl

Version: 1.2

Type: local

Agent: unix

Published: 9/15/2020

Updated: 11/24/2020

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2019-17571

VPR

Risk Factor: Critical

Score: 9

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

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

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:liblog4j1.2-java

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/15/2020

Vulnerability Publication Date: 12/20/2019

Reference Information

CVE: CVE-2019-17571

USN: 4495-1