Mozilla Firefox Use-After-Free Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 07/03/2022. Patch affected systems as an emergency.
| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | < 91.6.1< 97.0.2 | 91.6.197.0.2 |
| firefox focus | < 97.3.0 | 97.3.0 |
| firefox mobile | < 97.3.0 | 97.3.0 |
| thunderbird | < 91.6.2 | 91.6.2 |
Removing an XSLT parameter during processing could have lead to an exploitable use-after-free. We have had reports of attacks in the wild abusing this flaw. This vulnerability affects Firefox < 97.0.2, Firefox ESR < 91.6.1, Firefox for Android < 97.3.0, Thunderbird < 91.6.2, and Focus < 97.3.0.
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