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CVE-2019-9813 Incorrect handling of __proto__ mutations may lead to type confusion in IonMonkey JIT code and can be leveraged for…
Description
Incorrect handling of __proto__ mutations may lead to type confusion in IonMonkey JIT code and can be leveraged for arbitrary memory read and write. This vulnerability affects Firefox < 66.0.1, Firefox ESR < 60.6.1, and Thunderbird < 60.6.1.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Firefox 66.0 | earliest → < 66.0.1 | 66.0.1 |
| Firefox ESR 60.6 | earliest → < 60.6.1 | 60.6.1 |
| Thunderbird 60.6 | earliest → < 60.6.1 | 60.6.1 |
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