Description

Apache Log4j is a Java-based logging utility. When Apache Log4j is using the TCP socket server or UDP socket server to receive serialized log events from another application, a specially crafted binary payload can be sent that, when deserialized, can execute arbitrary code.

Apache Log4j Versions Affected: all versions from 2.0-alpha1 to 2.8.1.

Remediation

Upgrade to the latest version of Apache Log4j. This vulnerability was fixes in Apache Log4j version 2.8.2.

References

CVE-2017-5645: Apache Log4j socket receiver deserialization vulnerability

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Severity

Critical

Classification

CVE-2017-5645 CWE-502 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Tags

Code Execution Insecure Deserialization Acumonitor