Apache Struts 2

Apache Struts 2 is an open-source web application framework for developing Java EE web applications. It uses and extends the Java Servlet API to encourage developers to adopt a model–view–controller (MVC) architecture. The WebWork framework spun off from Apache Struts 1 aiming to offer enhancements and refinements while retaining the same general architecture of the original Struts framework. In December 2005, it was announced that WebWork 2.2 was adopted as Apache Struts 2, which reached its first full release in February 2007.[2]

For the predecessor of Apache Struts 2, see Apache Struts 1.
Apache Struts 2
Developer(s)Apache Software Foundation
Initial releaseOctober 10, 2006 (2006-10-10)
Stable release
2.5.22 / November 29, 2019 (2019-11-29)[1]
RepositoryStruts Repository
Written inJava
Operating systemCross-platform
PlatformCross-platform (JVM)
TypeWeb framework
LicenseApache License 2.0
Websitestruts.apache.org

Struts 2 has a history of critical security bugs,[3] many tied to its use of OGNL technology;[4] some vulnerabilities can lead to arbitrary code execution. In October 2017, it was reported that failure by Equifax to address a Struts 2 vulnerability advised in March 2017 was later exploited in the data breach that was disclosed by Equifax in September 2017.[5][6]

Features
  • Simple POJO-based actions
  • Simplified testability
  • Thread safe
  • AJAX support
  • Template support
  • Support for different result types
  • Easy to extend with plugins
    • REST plugin (REST-based actions, extension-less URLs)
    • Convention plugin (action configuration via Conventions and Annotations)
    • Spring plugin (dependency injection)
    • Hibernate plugin
    • Support in design
    • JFreechart plugin (charts)
    • jQuery plugin (Ajax support, UI widgets, dynamic table, charts)
    • Rome plugin
gollark: In this case it's symmetric about x=0, so the mean is just 0.
gollark: To work out the mean, you have to consider the entire distribution, by, as I said, doing integration™.
gollark: The "mean" is not where it's highest.
gollark: Why would they not be able to?
gollark: You can integrate the probability density function to work out the probability that your random sample lies in a particular region of the distribution.

See also

References
  1. "29 November 2019 - Struts 2.5.22 General Availability". Retrieved 4 February 2020.
  2. About Apache Struts 2 Archived January 14, 2014, at the Wayback Machine
  3. "Apache Struts : List of security vulnerabilities". cvedetails.com. Retrieved October 2, 2017.
  4. Munoz, Alvaro (January 14, 2014). "Struts 2: OGNL Expression Injections". HPE.com. Retrieved October 2, 2017.
  5. Chirgwin, Richard (October 2, 2017). "Equifax couldn't find or patch vulnerable Struts implementations". The Register. Retrieved October 2, 2017.
  6. Goodin, Dan (October 2, 2017). "A series of delays and major errors led to massive Equifax breach". Ars Technica. Retrieved October 2, 2017.
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