Apache Struts vulnerable to denial-of-service (DoS)


Apache Struts provided by the Apache Software Foundation is a software framework for creating web applications in Java. Web applications that are developed using Apache Struts 2 contain a denial-of-service (DoS) vulnerability due to an issue in URLValidator.

ASAI Ken reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 5.3 (Medium) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: None
  • Integrity Impact: None
  • Availability Impact: Low
CVSS V2 Severity:
Base Metrics 5.0 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Low
  • Authentication: None
  • Confidentiality Impact: None
  • Integrity Impact: None
  • Availability Impact: Partial
Affected Products

Apache Software Foundation
  • Apache Struts 2.3.20 to
  • Apache Struts 2.5

Affects of this vulnearbility to Apache Struts 1 is unknown.
As of April 5, 2013, Apache Software Foundation has announced that Apache Strtus 1 is no longer developed or supported.

An unauthenticated remote attacker may cause a denial-of-service (DoS) condition.

[Update the Software]
Update to the appropriate version according to the information provided by the developer.
Vendor Information

Apache Software Foundation Red Hat, Inc.
CWE (What is CWE?)

  1. Improper Input Validation(CWE-20) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2016-4465

  1. JVN : JVN#12352818
  2. National Vulnerability Database (NVD) : CVE-2016-4465
Revision History

  • [2016/06/20]
      Web page was published
      References : Content was added
      Vendor Information : Content was added