Vulnerability Note VU#519588

JasperServer cross-site request forgery vulnerability

Original Release date: 15 Sep 2011 | Last revised: 15 Sep 2011

Overview

JasperSoft's JasperServer is vulnerable to a cross-site request forgery (CSRF) vulnerability.

Description

According to JasperSoft's website: "JasperReports Server is a powerful, yet flexible and lightweight reporting server. Generate, organize, secure, and deliver interactive reports and dashboards to users. Allow non-technical users to build their own reports and dashboards." The JasperSoft's JasperServer fails to adequately randomize certain parameters within the application creating cross-site request forgery (CSRF) vulnerabilities. According to the vulnerability reporter "One of the parameters (_flowExecutionKey)is predictable and can be determined with a very high probability of success in bruteforce attacks with less than 100 requests".

This vulnerability has been reported to affect JasperServer 3.7.0 Community Edition and JasperServer 3.7.1 Community Edition. Other versions may be affected.

Impact

By convincing a victim to load a specially crafted URL while authenticated to a JasperServer, an attacker could obtain user credentials or perform certain actions as that user. Exploiting the CSRF vulnerabilities could allow an attacker to take certain actions via the web interface, including adding users to the JasperServer.

Solution

We are currently unaware of a practical solution to this problem.

Restrict access

As a general good security practice, only allow connections from trusted hosts and networks. Consider setting up management networks as separate and dedicated channels. Note that restricting access does not prevent XSS or CSRF attacks since the attack comes as an HTTP request from a legitimate user's host. Restricting access would prevent an attacker from accessing a JasperServer using stolen credentials from a blocked network location.

Vendor Information (Learn More)

VendorStatusDate NotifiedDate Updated
Jaspersoft CorporationAffected03 Mar 201115 Sep 2011
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A N/A

References

Credit

Thanks to Computer Security Incident Response Team of the Valencian Community for reporting this vulnerability.

This document was written by Michael Orlando.

Other Information

  • CVE IDs: CVE-2011-1911
  • Date Public: 15 Sep 2011
  • Date First Published: 15 Sep 2011
  • Date Last Updated: 15 Sep 2011
  • Severity Metric: 0.65
  • Document Revision: 15

Feedback

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