Remote code execution in Apache Log4J



Published: 2021-12-10 | Updated: 2022-11-13
Risk Critical
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-44228
CWE-ID CWE-94
Exploitation vector Network
Public exploit Vulnerability #1 is being exploited in the wild.
Vulnerable software
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Apache Log4j
Universal components / Libraries / Libraries used by multiple products

Vendor Apache Foundation

Security Bulletin

This security bulletin contains information about 1 vulnerabilities.

Updated: 11.12.2021

Changed severity level from high to critical to reflect in the wild exploitation of the vulnerability.

1) Code Injection

EUVDB-ID: #VU58816

Risk: Critical

CVSSv3.1:

CVE-ID: CVE-2021-44228

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation when processing LDAP requests. A remote attacker can send a specially crafted request to the application and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Note, we are aware of attackers exploiting the vulnerability in the wild.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Apache Log4j: 2.0 - 2.14.1


CPE2.3 External links

http://www.lunasec.io/docs/blog/log4j-zero-day/
http://github.com/apache/logging-log4j2/pull/608
http://github.com/advisories/GHSA-jfh8-c2jp-5v3q

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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