Published:2015/09/04  Last Updated:2015/09/07

Apache Struts vulnerable to cross-site scripting


Apache Struts contains a cross-site scripting vulnerability.

Products Affected

  • Apache Struts versions prior to 2.3.20
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.


Apache Struts provided by the Apache Software Foundation is a software framework for creating web applications in Java. Apache Struts is vulnerable to cross-site scripting when JSP files can be accessed directly.


An arbitrary script may be executed on the user's Internet Explorer when the XSS filter is turned off.


Update the software
Update the software according to the information provided by the developer.

The developer also recommends the following:

  • Place JSP files under the 'WEB-INF' folder to avoid direct access
  • Add a security constraint to the web.xml file

Vendor Status

Vendor Status Last Update Vendor Notes
JT Engineering inc. Not Vulnerable 2015/09/05


JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2015.09.04 (CVSS Base Metrics)

What is CVSS?

Measures Severity Description
Access Vector(AV) Local (L) Adjacent Network (A) Network (N) A vulnerability exploitable with network access means the vulnerable software is bound to the network stack and the attacker does not require local network access or local access. Such a vulnerability is often termed "remotely exploitable".
Access Complexity(AC) High (H) Medium (M) Low (L) The access conditions are somewhat specialized.
Authentication(Au) Multiple (M) Single (S) None (N) Authentication is not required to exploit the vulnerability.
Confidentiality Impact(C) None (N) Partial (P) Complete (C) There is no impact to the confidentiality of the system.
Integrity Impact(I) None (N) Partial (P) Complete (C) Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.
Availability Impact(A) None (N) Partial (P) Complete (C) There is no impact to the availability of the system.

Base Score:4.3


Takayoshi Isayama of Mitsui Bussan Secure Directions, Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

Other Information

JPCERT Reports
CERT Advisory
CPNI Advisory
CVE CVE-2015-2992
JVN iPedia JVNDB-2015-000124

Update History

JT Engineering inc. updated its vendor status and the section under "Affected System" was revised.