When a ServiceWorker intercepted a request with <code>FetchEvent</code>, the origin of the request was lost after the ServiceWorker took ownership of it. This had the effect of negating SameSite cookie protections. This was addressed in the spec and then in browsers. This vulnerability affects Firefox ESR < 102.5, Thunderbird < 102.5, and Firefox < 107.
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.
Link | Tags |
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https://www.mozilla.org/security/advisories/mfsa2022-47/ | vendor advisory |
https://www.mozilla.org/security/advisories/mfsa2022-49/ | vendor advisory |
https://www.mozilla.org/security/advisories/mfsa2022-48/ | vendor advisory |
https://bugzilla.mozilla.org/show_bug.cgi?id=1658869 | issue tracking permissions required vendor advisory |