Rapid7 Vulnerability & Exploit Database

Apache Log4j Core: CVE-2021-44832: Apache Log4j2 Remote Code Execution

Free InsightVM Trial No Credit Card Necessary
2024 Attack Intel Report Latest research by Rapid7 Labs
Back to Search

Apache Log4j Core: CVE-2021-44832: Apache Log4j2 Remote Code Execution

Severity
9
CVSS
(AV:N/AC:M/Au:S/C:C/I:C/A:C)
Published
12/28/2021
Created
12/31/2021
Added
12/29/2021
Modified
07/18/2022

Description

Apache Log4j2 versions 2.0-beta7 through 2.17.0 (excluding security fix releases 2.3.2 and 2.12.4) are vulnerable to a remote code execution (RCE) attack where an attacker 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. This issue is fixed by limiting JNDI data source names to the java protocol in Log4j2 versions 2.17.1, 2.12.4, and 2.3.2.

Solution(s)

  • apache-log4j-core-upgrade-2_3_2
  • apache-log4j-core-upgrade-2_12_4
  • apache-log4j-core-upgrade-2_17_1

References

insightVM

Advanced vulnerability management analytics and reporting.
Key Features
  • Lightweight Endpoint Agent
  • Live Dashboards
  • Real Risk Prioritization
  • IT-Integrated Remediation Projects
  • Cloud, Virtual, and Container Assessment
  • Integrated Threat Feeds
  • Easy-to-Use RESTful API
  • Automation-Assisted Patching
  • Automated Containment
Free InsightVM Trial View All Features

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;