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https://github.com/ESAPI/esapi-java-legacy

ESAPI (The OWASP Enterprise Security API) is a free, open source, web application security control library that makes it easier for programmers to write lower-risk applications.
https://github.com/ESAPI/esapi-java-legacy

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ESAPI (The OWASP Enterprise Security API) is a free, open source, web application security control library that makes it easier for programmers to write lower-risk applications.

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README 

        
Enterprise Security API for Java (Legacy)

=================



[![Build Status](https://travis-ci.org/bkimminich/esapi-java-legacy.svg?branch=master)](https://travis-ci.org/bkimminich/esapi-java-legacy)

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[![OpenSSF Best Practices](https://bestpractices.coreinfrastructure.org/projects/137/badge)](https://bestpractices.coreinfrastructure.org/projects/137)



OWASP® ESAPI (The OWASP Enterprise Security API) is a free, open source, web application security control library that makes it easier for programmers to write lower-risk applications. The ESAPI for Java library is designed to make it easier for programmers to retrofit security into existing applications. ESAPI for Java also serves as a solid foundation for new development.



# Jakarta EE Support

**IMPORTANT:**

ESAPI has supported the Jakarta Servlet API (i.e., **jakarta.servlet.api**) since release

2.5.3.0.  (Unfortunately, this information was previously missing in this **README** file.)



Therefore, for release 2.5.3.0 and later versions of ESAPI, ESAPI ought to be able to support Spring Boot 3, Spring 6, Tomcat 10,

and other applications or libraries requiring Jarkata EE. (If you find a case where it does

not, please file a GitHub issue for it.)



The ESAPI jar file supporting Jakarta will be named esapi-_version_-jakarta.jar. To use that

specific Jakarta version of ESAPI, in Maven, you would specify your ESAPI dependency in your

**pom.xml** as:

```xml



    org.owasp.esapi

    esapi

    2.5.5.0  

    jakarta



```

(or any other version later than 2.5.3.0). Thanks to Jonathon Putney for creating a PR to

fix this. There is a long discussion in GitHub Discussion [#768](https://github.com/ESAPI/esapi-java-legacy/discussions/768)

where this was first announced, for those of you have insomnia or really long attention

spans and are interested in the approaches that were tried.



Of course, ESAPI also still continues to support the older Java EE Servlet API (i.e., **javax.servlet** namespace) as well. In

fact, without the

```xml

jakarta

```

that's the version that will be used by default.



# A word about ESAPI vulnerabilities

A summary of all the vulnerabilities that we have written about in either the

ESAPI Security Bulletins or in the GitHub Security Advisories may be found

in this [Vulnerability Summary](https://github.com/ESAPI/esapi-java-legacy/blob/develop/Vulnerability-Summary.md).

It is too lengthy, and if you are using the latest available ESAPI version--generally not relevant--to

place in this **README** file.



# Where are the OWASP ESAPI wiki pages?

You can find the official OWASP ESAPI Project wiki pages at

[https://owasp.org/www-project-enterprise-security-api/](https://owasp.org/www-project-enterprise-security-api/).

The ESAPI legacy GitHub repo also has several useful [wiki pages](https://github.com/ESAPI/esapi-java-legacy/wiki).



# What does Legacy mean?

This is the legacy branch of ESAPI which means it is an actively maintained branch of the project, however significant *new* **feature development** for this branch will *not* be done. Features that have already been scheduled for the 2.x branch will move forward.

Development for the "next generation" of ESAPI (starting with ESAPI 3.0), will be done at the

GitHub repository at [https://github.com/ESAPI/esapi-java](https://github.com/ESAPI/esapi-java).



**IMPORTANT NOTES:**

* The default branch for ESAPI legacy is the 'develop' branch (rather than the 'main' (formerly 'master') branch), where future development, bug fixes, etc. are now being done. The 'main' branch is now marked as "protected"; it reflects the latest stable ESAPI release (2.5.3.1 as of this date). Note that this change of making the 'develop' branch the default may affect any pull requests that you were intending to make.

* Also, the *minimal* baseline Java version to use ESAPI is now Java 8. (This was changed from Java 7 during the 2.4.0.0 release.)

* Support was dropped for Log4J 1 during ESAPI 2.5.0.0 release. If you need it, configure it via SLF4J. See  the

  [2.5.0.0 release notes](https://github.com/ESAPI/esapi-java-legacy/blob/develop/documentation/esapi4java-core-2.5.0.0-release-notes.txt)

for details.



# Where can I find ESAPI 3.x?

As mentioned above, you can find it at [https://github.com/ESAPI/esapi-java](https://github.com/ESAPI/esapi-java).



Note however that work on ESAPI 3 has not yet begun in earnest and is only

in its earliest planning stages. Even the code that is presently there

will likely change.



# ESAPI Release Notes

The ESAPI release notes may be found in ESAPI's "documentation" directory. They are generally named "esapi4java-core-*2.#.#.#*-release-notes.txt", where "*2.#.#.#*" refers to the ESAPI release number (which uses semantic versioning).



See the GitHub [Releases](https://github.com/ESAPI/esapi-java-legacy/releases) information for a list of releases which generally

link to the specific release notes.



### Really IMPORTANT information in release notes - Ignore at your peril

* Starting with ESAPI 2.2.1.0, important details changed reading the ESAPI

  Logger. If you have are getting things like ClassNotFoundException, you

  probably have not read it. Please be sure to read this specific section

  of the

  [2.2.1.0 release notes](https://github.com/ESAPI/esapi-java-legacy/blob/develop/documentation/esapi4java-core-2.2.1.0-release-notes.txt#L128-L155)

* Starting with ESAPI 2.2.3.0, ESAPI is using a version of AntiSamy that by default includes 'slf4j-simple' and

  does XML schema validation on the AntiSamy policy files. Please **READ** this

  section from the

  [2.2.3.0 release notes](https://github.com/ESAPI/esapi-java-legacy/blob/1312102e79d4ed98d1396f5c56e12f437534d62b/documentation/esapi4java-core-2.2.3.0-release-notes.txt#L22-L34)

  (at least the beginning portion) for some important notes that likely will affect your use of ESAPI! You have been warned!!!

* ESAPI 2.3.0.0 is the last release to support Java 7 as the minimal JDK.

  Starting with release 2.4.0.0, Java 8 or later is required.

* Starting with ESAPI 2.5.4.0, if you were using ESAPI's default logger, JUL

  (i.e., you had the property **ESAPI.Logger** set to "org.owasp.esapi.logging.java.JavaLogFactory"),

  then you must remove (or rename) the old ESAPI configuration file **esapi-java-logger.properties**.

  Failure to do so will cause ESAPI to throw a `ConfigurationException`, thereby

  preventing your application from starting. For important additional details, please see

  the ESAPI GitHub Discussion https://github.com/ESAPI/esapi-java-legacy/discussions/841.



# Locating ESAPI Jar files

The [latest ESAPI release](https://github.com/ESAPI/esapi-java-legacy/releases/latest) is 2.5.4.0.

All the *regular* ESAPI jars, with the exception of the ESAPI configuration

jar (i.e., esapi-2.#.#.#-configuration.jar) and its associated detached

GPG signature, are available from Maven Central. The ESAPI configuration

jars are linked under the 'Assets' section to each of the specific

ESAPI releases under the

GitHub [Releases page](https://github.com/ESAPI/esapi-java-legacy/releases).



However, **before** you start a *new* project using ESAPI, but sure to read "[Should I use ESAPI?](https://owasp.org/www-project-enterprise-security-api/#div-shouldiuseesapi)".



# ESAPI Deprecation Policy

Unless we unintentionally screw-up, our intent is to keep classes, methods,

and/or fields which have been annotated as "@deprecated" for a

minimum of two (2) years or until the next major release number (e.g.,

3.x as of now), which ever comes first, before we remove them. Note

that this policy does not apply to classes under

the **org.owasp.esapi.reference** package. You generally are not expected

to be using such classes directly in your code. At the ESAPI team's discretion,

it will also not apply for any known exploitable vulnerabilities for which

no available workaround exists.



## Exceptions to Deprecation Policy

We will make some exceptions to the normal 2 year period. In particular, in the

cases were we believe that keeping a specific deprecated class or method around

can introduce security issues (generally because many of you have a habit of

completely ignoring deprecation warnings), we sometimes will shorten that 2 year

period. When we decide to do that, we will announce that as part of the

deprecation message.



## Log4J 1.x Removal

**IMPORTANT NOTES:** As of ESAPI 2.5.0.0, all the Log4J 1.x related code

has been removed from the ESAPI code base (with the exception of some

references in documentation). If you must, you still should be able to

use Log4J 1.x logging via ESAPI SLF4J support. See the ESAPI 2.5.0.0 release

notes for further details.



# Quickstart - Maven Example

### Step 1: Add the required dependencies.

See https://mvnrepository.com/artifact/org.owasp.esapi/esapi/latest, the tab for

whatever build tool you are using. If you need the Jakarta version, make sure to

add

```xml

    jakarta

```

and include whatever jakara.servlet:jakarta.servlet-api version you are using with

```xml

    provided

```

### Step 2: Obtain the 2 properties files ESAPI.properties and validation.properties

1. Download these 2 files from the ESAPI release that you are using from https://github.com/ESAPI/esapi-java-legacy/releases

   and download the esapi--configuration.jar file (and the .asc file if you wish to confirm the GPG signature).

2. Unjar that configuration file that you just downloaded and find the 2

   properties files under the "configuration/esapi" subdirectory where you

   unjarred the config jar.

3. Read through Javadoc for [DefaultSecurityConfiguration](https://javadoc.io/static/org.owasp.esapi/esapi/2.5.4.0/org/owasp/esapi/reference/DefaultSecurityConfiguration.html)

   to understand the ways that ESAPI locates these files and then use the mechanism that works best for you. Copy the 2 properties

   files from the 'configuration/esapi' directory to the directory where you

   choose to have them reside. Note that you may also edit them to customize

   them according to your needs.



# Contributing to ESAPI legacy

### How can I contribute or help with fix bugs?

Fork and submit a pull request! Easy as pi! (How's that for an irrational

statement, you math nerds? :) We generally only accept bug fixes, not

new features because as a legacy project, we don't intend on adding new

features that we will have to maintain long term (although we may make

exceptions; see the 'New Features' section in this **README**). If

you are interesting in doing bug fixes though, the best place to start is the

[CONTRIBUTING-TO-ESAPI.txt](https://github.com/ESAPI/esapi-java-legacy/blob/develop/CONTRIBUTING-TO-ESAPI.txt)



If you are new to ESAPI, a good place to start is to look for GitHub issues labled as 'good first issue'. (E.g., to find all open issues with that label, use [https://github.com/ESAPI/esapi-java-legacy/issues?q=is%3Aissue+is%3Aopen+label%3A%22good+first+issue%22](https://github.com/ESAPI/esapi-java-legacy/issues?q=is%3Aissue+is%3Aopen+label%3A%22good+first+issue%22).)



Again, please find additional important details in the file

'[CONTRIBUTING-TO-ESAPI.txt](https://github.com/ESAPI/esapi-java-legacy/blob/develop/CONTRIBUTING-TO-ESAPI.txt)',

which will also describe the tool requirements.



#### Want to report an issue?

If you have found a bug, then create an issue on the esapi-legacy-java repo at [https://github.com/ESAPI/esapi-java-legacy/issues](https://github.com/ESAPI/esapi-java-legacy/issues)

As of May 11, 2022, we switched back to using (GitHub) issue templates. (We previously used issue templates when our source code repository was still on Google Code.) You can read more about our issue templates in this brief

[announcement](https://github.com/ESAPI/esapi-java-legacy/discussions/700).



NOTE: Please do **NOT** use GitHub issues to ask questions about ESAPI.

If you wish to ask questions, instead, post to either of the 2 mailing

lists (now on Google Groups) found the References section at the bottom

of this page. If we find questions posted as GitHub issues, we simply will

close them and direct you to do this anyhow. Alternately you may use the new

[Q&A](https://github.com/ESAPI/esapi-java-legacy/discussions/categories/q-a) section of our GitHub

[Discussions](https://github.com/ESAPI/esapi-java-legacy/discussions) page to ask questions.



When reporting an issue or just asking a question, please be clear and try

to ensure that the ESAPI development team has sufficient information to be

able to reproduce your results or to understand your question. If you have

not already done so, this might be a good time to read Eric S. Raymond's classic

"[How to Ask Questions the Smart Way](http://www.catb.org/esr/faqs/smart-questions.html)"

before posting your issue.



#### Find a Vulnerability?

If believe you have found a vulnerability in ESAPI legacy, for the sake of the

ESAPI community, please practice Responsible Disclosure. (Note: We will be sure

you get credit and will work with you to create a GitHub Security Advisory, and

if you so choose, to pursue filing a CVE via the GitHub CNA.)



You are of course encouraged to first search our GitHub issues list (see above)

to see if it has already been reported. If it has not, then please contact

both Kevin W. Wall (kevin.w.wall at gmail.com) and

Matt Seil (matt.seil at owasp.org) directly. Please do not report

vulnerabilities via GitHub issues or via the ESAPI mailing lists as

we wish to keep our users secure while a patch is implemented and

deployed. If you wish to be acknowledged for finding the vulnerability,

then please follow this process. Also, when you post the email describing

the vulnerability, please do so from an email address that you usually

monitor.



More detail is available in the file

'[SECURITY.md](https://github.com/ESAPI/esapi-java-legacy/blob/develop/SECURITY.md)'.

https://raw.githubusercontent.com/ESAPI/esapi-java-legacy/blob/develop/SECURITY.md)'.



### New Features

If you wish to propose a new feature, the best place to discuss it is via

new 'Discussions' board, probably under

'[Ideas](https://github.com/ESAPI/esapi-java-legacy/discussions/categories/ideas)',

or on the ESAPI-DEV mailing list mentioned below under the References section.

As mentioned previously, we generally are not considering new features

for ESAPI 2.x. This is because:

- ESAPI is already too monolithic and has too many dependencies for its size.

- We are trying to wind down support of ESAPI 2.x and get ESAPI 3.0 going so any

  resources we throw at ESAPI 2.x will slow down that goal.



That said, if you believe you have an idea for an additional simple feature that

does not pull in any additional 3rd party libraries, toss it out there for

discussion or even show us how it works with a PR. (Note that we vet all pull

requests, including coding style of any contributions, so please use the same

coding style found in the files you are already editing.)



# References: Where to Find More Information on ESAPI

**OWASP Wiki:** https://owasp.org/www-project-enterprise-security-api/



**GitHub ESAPI Wiki:** https://github.com/ESAPI/esapi-java-legacy/wiki



**General Documentation:** Under the '[documentation](https://github.com/ESAPI/esapi-java-legacy/tree/develop/documentation)' folder.



**OWASP Slack Channel:** [#owasp-esapi](https://owasp.slack.com/archives/CQ2ET27AN)



**GitHub Discussions:** [Discussions](https://github.com/ESAPI/esapi-java-legacy/discussions) - Not a lot there yet, but we only started this on May 11, 2022.



**Mailing lists:**

* As of 2019-03-25, ESAPI's 2 mailing lists were officially moved OFF of their Mailman mailing lists to a new home on Google Groups.

* The names of the 2 Google Groups are "[esapi-project-users](mailto:[email protected])" and "[esapi-project-dev](mailto:[email protected])", which you may POST to *after* you subscribe to them via "[Subscribe to ESAPI Users list](https://groups.google.com/a/owasp.org/forum/#!forum/esapi-project-users/join)" and "[Subscribe to ESAPI Developers list](https://groups.google.com/a/owasp.org/forum/#!forum/esapi-project-dev/join)" respectively.

* Old archives for the old Mailman mailing lists for ESAPI-Users and ESAPI-Dev are still available at https://lists.owasp.org/pipermail/esapi-users/ and https://lists.owasp.org/pipermail/esapi-dev/ respectively.

* For a general overview of Google Groups and its web interface, see [https://groups.google.com/forum/#!overview](https://groups.google.com/forum/#!overview)

* For assistance subscribing and unsubscribing to Google Groups, see [https://webapps.stackexchange.com/questions/13508/how-can-i-subscribe-to-a-google-mailing-list-with-a-non-google-e-mail-address/15593#15593](https://webapps.stackexchange.com/questions/13508/how-can-i-subscribe-to-a-google-mailing-list-with-a-non-google-e-mail-address/15593#15593).



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