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Burp Extender lets you extend the functionality of Burp Suite in numerous ways.

Extensions can be written in Java, Python or Ruby.

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Thursday, November 27, 2014


This release fixes a problem affecting some users of 32-bit systems with the new handling of temporary files that was introduced in v1.6.08.

When the temporary file store grows sufficiently large, some users of 32-bit systems have experienced out-of-memory errors with v1.6.08 of Burp. The new release reverts to the old handling of temporary files for users of 32-bit systems.

In the near future, we are planning to release some powerful new features in Burp which will only be properly supported on 64-bit systems. We recommend that any Burp users who are still using 32-bit editions of their operating system or Java should upgrade to 64-bit editions.

MD5: 2af52da4cc49f205639f7a7e9dd336e2
SHA256: 24e720ee05f751a4adfd6c4089d5604e84cae58b0ac68aa39a3866e45e7cdec3

Tuesday, November 18, 2014


This release contains various new features and enhancements:
  • The Scanner has been updated with the ability to detect cross-site request forgery (CSRF) vulnerabilities. We have held off reporting CSRF for a long time, because in our experience many scanners that attempt to automate this end up generating more heat than light. If a scanner generates too many false positives, then users lose faith in its output and start to ignore all of the issues it reports of that type. Because of this, we've worked hard to make our CSRF detection actually provide value to Burp users. We have deliberately erred on the side of reducing the number of false positives. The CSRF issues that Burp does report should all be worthy of manual investigation to determine whether the affected application functionality should be protected against CSRF attacks. We welcome real-world feedback about the performance of the new check, and we will aim to refine this further in future.
  • The Scanner logic for the detection of XSS and SQL injection vulnerabilities has been further enhanced.
  • Burp's use of temporary files has been updated to use a small number of large temporary files, rather than an individual file for each saved HTTP request and response. This change should resolve problems that some users have experienced with the operating system running out of open file handles, or even running out of file nodes within the temporary directory.
  • In the previous release, the Extender tool was modified so that its own configuration was not modified when an extension initiated a restore of a Burp state file. In this release, the same change has been made for the case where an extension initiates an update to Burp's configuration.
  • The maximum number of threads that can be configured for the Spider tool, and for an Intruder attack, has been increased to 999.
  • A hotkeyable action has been added to start the current Intruder attack. By default, no hotkey is assigned to this action, but one can be configured at Options / Misc / Hotkeys / Edit hotkeys.
MD5: 48ba9a48bca535109a7a63b3a198ce62
SHA256: 483055ab46c80ff55e9aee7849e295b30c2a81e45c20da9afd91fad2b9938478

Monday, November 3, 2014


This release contains various enhancements to the Scanner engine logic, to improve both the reliability of issue reporting, and the quality of proof-of-concept exploits. Improvements have been made to the following checks:
  • OS command injection
  • SQL injection
  • HTTP response header injection
  • File path traversal
  • Server-side JavaScript / NoSQL injection
  • Reflected cross-site scripting
  • Various DOM-based issues
  • Open redirection
Several other improvements have also been made, including:
  • The maximum number of active scan threads has been increased to 999.
  • A workaround has been applied to override a recent change in Java platform behavior which affected SSL negotiation with some servers.
  • A problem in which extension-initiated restoration of state could cause the configuration of the Extender tool to be reloaded, thereby interfering with the extension's own execution, has been resolved,
  • A "Start attack" button has been added to each configuration panel in the Intruder tool.
  • A bug in which multibyte characters are copied from the HTTP message viewer to the clipboard as raw bytes has been resolved.
MD5: 2b61fdc0669800654e915d629b20e614
SHA256: 48dd29167af6f467ceb5a457ae99b34944eed9cfbf4640ae58abe58f8b3fe8be

Monday, October 20, 2014


This release includes some major enhancements to the Scanner engine. Burp can now automatically report the following new types of issues:
  • Perl code injection
  • PHP code injection
  • Ruby code injection
  • Server-side JavaScript code injection
  • File path manipulation
  • Serialized object in HTTP message
  • Client-side JSON injection (DOM-based)
  • Client-side XPath injection (DOM-based)
  • Document domain manipulation (DOM-based)
  • Link manipulation (DOM-based)
  • DOM data manipulation (DOM-based)
Additionally, the scanning logic for several existing checks has been enhanced to improve accuracy.

A number of bugs have also been fixed, including:
  • A bug that caused the option "skip server side injection tests for these parameters" to not work in some situations.
  • A bug that caused session handling rules to fail when using the sessions tracer, in some situations.
  • A bug affecting the auto-generation of CA-signed per-host SSL certificates, in some situations.
  • A bug that sometimes caused Burp to hang on startup when reloading certain extensions.
MD5: 694cf004dd433078f1eba9913a493c93
SHA256: 2e1f010a3ad4b8d51906e68b5a924404854a8a501d85f29185a31626b74d0fbb

Tuesday, August 19, 2014


This release fixes a UI bug affecting a small number of users who are running Burp on Java 1.6.

MD5: f96be0b9bd18e2efd700ebf0fc74a81c
SHA256: 2dea974356f6459e284ec0ef1552e51eef1cd89ef0a558c46489f04feee5b3c8

Wednesday, August 13, 2014


This release fixes a number of minor bugs in the JavaScript code analysis engine. These bugs resulted in false negatives or performance problems in the detection of certain DOM-based vulnerabilities.

Additionally, the following other changes have been made:
  • A bug affecting the restoration of saved Intruder attacks has been fixed.
  • A bug that prevented the button to help install Jython or JRuby from showing for some relevant BApps, has been fixed.
  • A bug that occasionally causes the Scanner UI to hang when modifying issue severity or confidence has been addressed (again). Further feedback on this problem is welcomed.
  • Some new match/replace rules have been added to the default Proxy options, allowing removal of HSTS response headers, and disabling of browser XSS protection.
MD5: 431d9b391c54d581948abb45dfd98eae
SHA256: b0a5a845fc46812a74ea0c9b692df71315607f622d7263270a63e3f75332a568

Monday, July 28, 2014


This release includes a new engine for static analysis of JavaScript code. This enables Burp Scanner to report a range of new vulnerabilities, including:
  • DOM-based XSS
  • JavaScript injection
  • Client-side SQL injection
  • WebSocket hijacking
  • Local file path manipulation
  • DOM-based open redirection
  • Cookie manipulation
  • Ajax request header manipulation
  • DOM-based denial of service
  • Web message manipulation
  • HTML5 storage manipulation
For more details, see the blog post.

MD5: bacd658a929c4a69580ea646d03b7d03
SHA256: 8f4ed620356d2ecedd3a8be6754137e0788dc3e1b6e2df628a28f1a8a75a21a7

Tuesday, July 22, 2014


This release contains various bugfixes and minor enhancements:
  • A bug that caused certain HTML content to be wrongly inferred as JavaScript, with a knock-on effect on the Scanner's XSS checking logic, has been fixed.
  • A bug introduced in v1.6.01 affecting the passing through of command line arguments to extensions has been fixed.
  • A bug that sometimes caused session handling rules using macros to be incorrectly restored from state files, has been fixed
  • A bug that occasionally caused corruption in the rendering of live streaming responses has been fixed.
  • A bug where the "time of day" value in Intruder attack results was incorrectly reported when request throttling was enabled, has been fixed.
  • Logging options have been enabled for the Sequencer tool.
  • Links in the BApp details tab are now clickable and open in an external browser.
  • Renamable tab captions now prevent accidental renaming to an empty string, which previously resulted in a pixel-perfect double-click being required to rename the tab to anything else.
  • Efforts have been made to fix an occasional bug that causes the UI to freeze when changing the confidence or severity of Scanner issues. Feedback is welcomed on whether this bug has indeed gone away.
MD5: e9a5a822c3075f827b9c953d9c52336c
SHA256: ae0c91a1768f4b5c9b1585bad05dbb18e160978f42976ac720a666d2d5fcc982

Wednesday, June 11, 2014


This release contains various enhancements to existing functionality:
  • The Spider's link-discovery engine has been enhanced, and now achieves a WIVET score of 50%. There is more work to do in this area, and improved crawling of JavaScript-driven navigation is in the pipeline.
  • There are new hotkeyable actions to go back and forwards in the Repeater history for the currently displayed tab. Hotkeys can be assigned to these actions at Options / Misc / Hotkeys.
  • The "valid from" time on Proxy-generated CA-signed host certificates has been changed to be 30 days in the past, to reduce problems that can arise when using multiple test machines with different system times.
  • Handling of non-HTTP-compliant messages that use \n instead of \r\n as header delimiters has been improved.
  • A new option has been added to prevent access to the in-browser Proxy interface using a fully-qualified DNS name, to hinder DNS rebinding attacks against it.
Various bugs have been fixed, including:
    • A bug that resulted in a cryptic error message when attempting to restore state from an invalid file that wasn't generated by Burp's save state function.
    • A bug in the Proxy's generation of CA-signed host certificates when the Proxy listener is configured to do host redirection. Previously, the certificate was being generated for the redirected hostname, not the original one requested by the browser, causing a certificate error in the browser.
    • A bug in the Proxy's match/replace function where replacement strings containing regex metacharacters are wrongly handled when doing non-regex-based match/replace.
    • A bug where target host redirection performed by a Burp extension (by modifying the target details for the current request) is not honored when using SSL with an upstream proxy server. Previously, Burp made a CONNECT request using the original hostname, not the modified one.
    • A bug which caused some session handling rules to fail when processing multipart requests containing a file upload parameter.
    MD5: 23f5392b6dc4a41f19c4afc619e8fc3f
    SHA256: acdcf6f40a1152dd72a198869b99d3c6ec82fa9a7281e3d2454e0d475b62c2d5

    Tuesday, April 15, 2014


    This is the final v1.6 release.

    Burp Suite Free Edition contains significant new features added since v1.5, including:
    • Support for WebSockets messages.
    • Support for PKCS#11 client SSL certificates contained in smart cards and physical tokens.
    • A new Extender tool, allowing dynamic loading and unloading of multiple extensions.
    • A new powerful extensibility API, enabling extensions to customize Burp's behavior in much more powerful ways.
    • Support for extensions written in Python and Ruby.
    • A new BApp Store feature, allowing quick and easy installation of extensions written by other Burp users.
    • An option to resolve DNS queries over a configured SOCKS proxy, allowing access to TOR hidden services.
    • Generation of CSRF PoC attacks using a new cross-domain XHR technique.
    • New options for SSL configuration, to help work around common problems.
    • Optional unpacking of compressed request bodies in the Proxy.
    • Support for .NET DeflateStream compression.
    • New and improved types of Intruder payloads.
    • New Proxy interception rules.
    • New Proxy match/replace rules.
    • Improved layout options in the Repeater UI.
    • An SSL pass-through feature, to prevent Burp from breaking the SSL tunnel for specified domains.
    • Support for the Firefox Plug-n-hack extension.
    • An option to copy a selected request as a curl command.
    Burp Suite Professional contains a number of bugfixes and tweaks, added since the last beta version, including:
    • An occasional bug causing misplaced highlights on payloads in Scanner issues has been fixed.
    • A bug in which restoring default settings for the Extender tool didn't unload any currently running extensions has been fixed.
    • A display bug affecting the rendering of binary content (such as images) in the raw view of the HTTP message editor has been fixed.
    • A bug which prevented the automatic backup on exit feature from functioning in headless mode has been fixed.
    • In previous versions, Burp stored its preferences in separate locations for each major version. This caused persisted settings to be lost on upgrading to a new major version. This behavior has been modified, and from v1.6 onwards major versions will store their preferences in the same location. As a workaround to preserve settings from earlier releases, Pro users can launch the earlier release, save a state file containing their preferences, then launch the new release and load the state file.
    Work is already underway on some exciting new features that will be arriving post v1.6 ...

    Free edition
    MD5: 6f2c0ff4e3cab35bb49312ce88e1a690
    SHA256: 21cfdd2d2f682997648f3877bca239bde358f8ce5a2a9304fd1de72fc68a3312

    Pro edition
    MD5: 8d56e783e79f615feefd3717322d61dd
    SHA256: d81a765df2eb2fc33f91cdbf2669264204a9acf2ed7e43187ff7632015ffa89b

    Thursday, April 3, 2014


    This release fixes a number of bugs:
    • A bug in v1.6beta that caused some saved state files to be corrupted has been fixed. The majority of problematic state files that were generated with the previous version should be loadable in this release.
    • A bug in the HTTP message viewer which caused parts of a message not to be displayed in certain situations has been fixed.
    • A bug arising on certain platforms (e.g. some OS X retina machines), in which the HTTP message viewer displays the cursor in the wrong position, has been addressed. Since this was a platform-specific problem, and we weren't able to reproduce the bug on all reported configurations, we welcome feedback as to whether any further instances of this problem are remaining.
    • Problems affecting Proxy SSL negotiation on Java 8 have been addressed. Burp is not yet officially supported on this platform, pending further testing, but we welcome feedback about any further problems that arise on Java 8.
    • Some XSS edge cases relating to URL-encoding of specific payload characters, which were being missed by Burp, are now detected properly.
    • A bug in the Intruder custom iterator payload type, which caused it not to generate the expected payloads in certain conditions, has been fixed.
    • The opt-out checkbox for reporting of anonymous performance feedback, which previously appeared only on an options panel, has been added to the EULA acceptance dialog.
    MD5: 2bae268d34ead1cf4cecc8a31840a427
    SHA256: 8d3c71c4044f039e87f0838335e698d29d68e00dfe76c3a987eec93f138456d0

    Tuesday, March 4, 2014


    This release introduces the BApp Store, a repository of Burp extensions that have been written by users of Burp Suite, to extend its capabilities:

    You can install BApps with one click from within Burp, and you can also download them from the BApp Store web site for manual installation on machines without Internet access. We've assembled an initial list of extensions and will hopefully be adding more soon.

    The handling of URL-encoding of parameters within session handling macros has been rationalized, to make Burp "just do" the right thing in nearly every case, without the need for any special configuration by the user. Previously, there was a per-parameter configuration option whether to URL-encode its value. Since Burp actually knows the context in a response from which a parameter's value is being derived, and the context in a subsequent request into which it is being placed, Burp can automatically take care of the encoding in exactly the cases where it is needed.

    The exception to this, where some manual configuration is still required, is where you have configured a custom parameter location within a response. Since this is a custom location, you need to tell Burp whether or not the raw extracted value is already URL-encoded, and Burp will handle it correctly when using its value in subsequent requests.

    A bug that was introduced in v1.5.21, affecting Proxy SSL negotiation in cases where the client has only specified an IP address, has been fixed. The previous behavior, where Burp fetches the authentic SSL certificate from the destination host and forges a copy signed by its own CA certificate, has been restored. This technique is necessary to support Android clients, which only send a target's IP address in the CONNECT request that precedes the SSL negotiation.

    This is officially a beta release, and when the final version is released, relevant changes since v1.5 will be ported into a new release of Burp Suite Free Edition.

    MD5: 06c8148609ff9f9ad9f92937c2047425
    SHA256: 7f4b26e428742b00a8464150ef82a2c94720ef9b62ea513435f41bf4dfb39265

    Thursday, January 30, 2014


    This release adds support for WebSockets to the Proxy tool. You can now view, intercept and modify WebSockets messages in the same way as regular HTTP messages:

    There is a new Proxy history tab for WebSockets messages, with the same capabilities as the HTTP history (filter, sort, search, etc.):

    You can configure whether incoming and outgoing WebSockets messages are intercepted at Proxy / Options / Intercept WebSockets Messages.

    The Scanner's support for nested insertion points, which was introduced in the previous release, has been updated:
    • Nested data in URL-encoded query string format is now recognized, and insertion points are created for each parameter value within the nested data. This is only done if the nested query string contains at least two parameters, so as to avoid false positive in common cases where a parameter value happens to contain the = character.
    • Highlighting of relevant syntax in reported Scanner issues is now fully precise within nested insertion points, and picks out the exact item of input that Burp modified in order to identify the issue.
    The Scanner reporting function now has an option to embed report images inline within the generated HTML. This works on all recent browsers, but you can revert to the old behavior (of images stored in a subdirectory) if you prefer.

    There is a new function to report anonymous feedback about Burp's performance. This will help us improve Burp by obtaining technical information about problems within Burp. The feedback does not identify the user, but you can turn this function off at Options / Misc / Performance Feedback.

    Various bugs have been fixed.

    MD5: b80c61d45054e483870f75fff35d0c56
    SHA256: 52903a758d6714aedb90a45f58a477df40288be76ae0f1961510c8755a4ef903