Not rated
CVE-2021-29976 Mozilla developers reported memory safety bugs present in code shared between Firefox and Thunderbird
Description
Mozilla developers reported memory safety bugs present in code shared between Firefox and Thunderbird. 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. This vulnerability affects Thunderbird < 78.12, Firefox ESR < 78.12, and Firefox < 90.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Thunderbird 78.12 | earliest → < 78.12 | 78.12 |
| Firefox ESR 78.12 | earliest → < 78.12 | 78.12 |
| Firefox 90 | earliest → < 90 | 90 |
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