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2021 02 18 - P4 Security issue (XSS)

A security vulnerability was recently identified and fixed in Elements Connect. Here are the details about the issue, its impact and the analysis and actions taken.

Nature of the issue

The vulnerability was present since the first public version of Elements Connect for Jira Cloud.
The vulnerability meant that a Jira admin could create/update a Connected item query to inject a runnable script, that would then execute in the browser on the display of a ticket containing the Connected item by an admin.
This vulnerability has been rated as low, according to the scale published on the Common Vulnerability Scoring System (CVSS).
The vulnerability was detected by internal investigations on  .

Impact

Based on our investigations, the vulnerability has not been exploited.

Analysis and actions taken

Once we detected the issue, a plan was then elaborated by the IT team to analyse the situation, bring a fix for the issue and deploy it as quickly as possible.
Our investigations revealed that the problem was caused by an unnecessary interpretation of HTML language in the Connected items query in the Debug component (only available to Jira admins).

We removed this unnecessary interpretation of HTML language to prevent all XSS attacks.

Deployment of the fixed version was conducted by following the usual CI procedure.
On top of the automatic tests, we made another series of tests to ensure that the problem was fixed in production.

Conclusion

We want you to know that we take this issue very seriously. We are conducting a thorough review of our internal processes to ensure this does not occur again for our customers.
If you have any questions, please feel free to raise a support request at support.elements-apps.com referencing "ECC-1042".

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