GitHub Advisoryadvisory · Maven

GHSA-2qrg-x229-3v8q Deserialization of Untrusted Data in Log4j

CRITICAL Published 2020-01-06 Modified 2026-06-09 Official page ↗
Aliases
CVE-2019-17571
Ecosystem
Maven
Packages
log4j:log4j, org.zenframework.z8.dependencies.commons:log4j-1.2.17
Severity
Critical
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-502
Reviewed
2019-12-27

Affected packages

• Maven log4j:log4j: >= 1.2, <= 1.2.17 (no fix yet) • Maven org.zenframework.z8.dependencies.commons:log4j-1.2.17: 2.0 (no fix yet)

Description

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 1.2 up to 1.2.17. Users are advised to migrate to `org.apache.logging.log4j:log4j-core`.

Related

Alias · CVE (1)

  • CVE-2019-17571 Included in Log4j 1.2 is a SocketServer class that is vulnerable to deserialization of untrusted data which can be exploited to remotely… vulnerability

Weakness · CWE (1)

  • CWE-502 Deserialization of Untrusted Data weakness

References