CVE-2020-6822
High
Description
On 32-bit builds, an out of bounds write could have occurred when processing an image larger than 4 GB in <code>GMPDecodeData</code>. It is possible that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 68.7.0, Firefox ESR < 68.7, and Firefox < 75.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Mozilla Firefox
PublishedApr 24, 2020
First seenApr 24, 2020
How to fix
Update
- mozilla firefox75.0 or later
- mozilla firefox_esr68.7.0 or later
- mozilla thunderbird68.7.0 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 75.0 | 75.0 |
| mozilla firefox_esr | v < 68.7.0 | 68.7.0 |
| mozilla thunderbird | v < 68.7.0 | 68.7.0 |
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