| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | < 74.0 | 74.0 |
| firefox esr | < 68.6.0 | 68.6.0 |
| thunderbird | < 68.6.0 | 68.6.0 |
By carefully crafting promise resolutions, it was possible to cause an out-of-bounds read off the end of an array resized during script execution. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 68.6, Firefox < 74, Firefox < ESR68.6, and Firefox ESR < 68.6.
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