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AUSCERT External Security Bulletin Redistribution
ESB-2021.2436
MFSA 2021-32 Insecure Sharing of HTML/JS Files in Hubs Cloud Reticulum
20 July 2021
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AusCERT Security Bulletin Summary
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Product: Hubs Cloud
Publisher: Mozilla
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Cross-site Scripting -- Remote/Unauthenticated
Reduced Security -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2021-29954
Original Bulletin:
https://www.mozilla.org/en-US/security/advisories/mfsa2021-32/
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Mozilla Foundation Security Advisory 2021-32
Insecure Sharing of HTML/JS Files in Hubs Cloud Reticulum
Announced: July 14, 2021
Impact: high
Products: Hubs Cloud
Fixed in: Hubs Cloud mozillareality/reticulum/1.0.1/20210618012634
Hubs Cloud allows users to share content with other Hubs Cloud users. However,
the implicit content type that was being used to serve HTML/JS files could give
way to XSS vulnerabilities. To the best of our understanding, this issue was
not abused in the wild. If you believe your Hubs Cloud instance has been
abused, please contact Mozilla directly via hubs-support@mozilla.com
# CVE-2021-29954: Insecure Sharing of HTML/JS Files in Hubs Cloud Reticulum
Reporter: Muhammad R. Maulana
Impact: high
Description
Hubs Cloud allows users to download shared content, specifically HTML and JS,
which could allow javascript execution in the Hub Cloud instance's primary
hosting domain.
References
o Bug 1682370
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