#VU59098 Code Injection in Apache Log4j - CVE-2021-44832
Published: December 28, 2021 / Updated: April 25, 2022
Vulnerability identifier: #VU59098
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-44832
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Apache Log4j
Apache Log4j
Software vendor:
Apache Foundation
Apache Foundation
Description
The vulnerability allows a remote user to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation. A remote user with permission to modify the logging configuration file can construct a malicious configuration using a JDBC Appender with a data source referencing a JNDI URI which can execute remote code.
Remediation
Install updates from vendor's website.