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CVE-2020-6821 When reading from areas partially or fully outside the source resource with WebGL's copyTexSubImage method, the…
Description
When reading from areas partially or fully outside the source resource with WebGL's <code>copyTexSubImage</code> method, the specification requires the returned values be zero. Previously, this memory was uninitialized, leading to potentially sensitive data disclosure. This vulnerability affects Thunderbird < 68.7.0, Firefox ESR < 68.7, and Firefox < 75.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Thunderbird 68.7 | earliest → < 68.7.0 | 68.7.0 |
| Firefox ESR 68.7 | earliest → < 68.7 | 68.7 |
| Firefox 75 | earliest → < 75 | 75 |
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