[com.wire.bots:lithium] Lithium vulnerable to Cross Site Scripting in provided Swagger-UI

Impact

A XSS vulnerability in the provided (outdated) Swagger-UI is exploitable in applications using lithium with Swagger-UI enabled.
This allows an attacker gain Remote Code Execution (RCE) and potentially exfiltrate secrets in the context of this swagger session.

Patches

The used swagger-ui was updated by switching to the latest version of dropwizard-swagger in 8b9b406d608fe482ec0e7adf8705834bca92d7df

Workarounds

The risk of injected external content can be reduced by setting up a Content-Security-Policy.

References

• https://www.vidocsecurity.com/blog/hacking-swagger-ui-from-xss-to-account-takeovers/

Credits

We thank Mohit Kumar for reporting this vulnerability!

References

• https://github.com/wireapp/lithium/security/advisories/GHSA-f36p-42jv-8rh2
• https://github.com/wireapp/lithium/commit/8b9b406d608fe482ec0e7adf8705834bca92d7df
• https://github.com/advisories/GHSA-f36p-42jv-8rh2