Mozilla Foundation Security Advisory 2022-17
Security Vulnerabilities fixed in Firefox ESR 91.9
- Announced
- May 3, 2022
- Impact
- high
- Products
- Firefox ESR
- Fixed in
-
- Firefox ESR 91.9
#CVE-2022-29914: Fullscreen notification bypass using popups
- Reporter
- Irvan Kurniawan
- Impact
- high
Description
When reusing existing popups Firefox would have allowed them to cover the fullscreen notification UI, which could have enabled browser spoofing attacks.
References
#CVE-2022-29909: Bypassing permission prompt in nested browsing contexts
- Reporter
- Armin Ebert
- Impact
- high
Description
Documents in deeply-nested cross-origin browsing contexts could have obtained permissions granted to the top-level origin, bypassing the existing prompt and wrongfully inheriting the top-level permissions.
References
#CVE-2022-29916: Leaking browser history with CSS variables
- Reporter
- Mateusz Sionkowski
- Impact
- high
Description
Firefox behaved slightly differently for already known resources when loading CSS resources involving CSS variables. This could have been used to probe the browser history.
References
#CVE-2022-29911: iframe Sandbox bypass
- Reporter
- Trung Pham
- Impact
- high
Description
An improper implementation of the new iframe sandbox keyword allow-top-navigation-by-user-activation could lead to script execution without allow-scripts being present.
References
#CVE-2022-29912: Reader mode bypassed SameSite cookies
- Reporter
- Matheus Vrech
- Impact
- moderate
Description
Requests initiated through reader mode did not properly omit cookies with a SameSite attribute.
References
#CVE-2022-29917: Memory safety bugs fixed in Firefox 100 and Firefox ESR 91.9
- Reporter
- Mozilla developers
- Impact
- high
Description
Mozilla developers Andrew McCreight, Gabriele Svelto, Tom Ritter and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 99 and Firefox ESR 91.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code.