Mozilla Foundation Security Advisory 2022-19
Security Vulnerabilities fixed in Firefox 100.0.2, Firefox for Android 100.3.0, Firefox ESR 91.9.1, Thunderbird 91.9.1
- Announced
- May 20, 2022
- Impact
- critical
- Products
- Firefox, Firefox ESR, Firefox for Android, Thunderbird
- Fixed in
-
- Firefox 100.0.2
- Firefox ESR 91.9.1
- Firefox for Android 100.3
- Thunderbird 91.9.1
#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.