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May 20th, 2022 06:00
Updates 5/20/2022 - Firefox
https://www.mozilla.org/en-US/security/advisories/mfsa2022-19/
Security Vulnerabilities fixed in Firefox 100.0.2, Firefox for Android 100.3.0, Firefox ESR 91.9.1
- Announced
- May 20, 2022
- Impact
- critical
- Products
- Firefox, Firefox ESR, Firefox for Android
- Fixed in
-
- Firefox 100.0.2
- Firefox ESR 91.9.1
- Firefox for Android 100.3
#CVE-2022-1802: Prototype pollution in Top-Level Await implementation
- Reporter
- Manfred Paul via Trend Micro's Zero Day Initiative
- Impact
- critical
Description
If an attacker was able to corrupt the methods of an Array object in JavaScript via prototype pollution, they could have achieved execution of attacker-controlled JavaScript code in a privileged context.
References
#CVE-2022-1529: Untrusted input used in JavaScript object indexing, leading to prototype pollution
- Reporter
- Manfred Paul via Trend Micro's Zero Day Initiative
- Impact
- critical
Description
An attacker could have sent a message to the parent process where the contents were used to double-index into a JavaScript object, leading to prototype pollution and ultimately attacker-controlled JavaScript executing in the privileged parent process.
References
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Available via the internal updater: Help / About Firefox
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