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CVE-2021-29946 Ports that were written as an integer overflow above the bounds of a 16-bit integer could have bypassed port blocking…
Description
Ports that were written as an integer overflow above the bounds of a 16-bit integer could have bypassed port blocking restrictions when used in the Alt-Svc header. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Firefox ESR 78.10 | earliest → < 78.10 | 78.10 |
| Thunderbird 78.10 | earliest → < 78.10 | 78.10 |
| Firefox 88 | earliest → < 88 | 88 |
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