| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | < 73.0 | 73.0 |
| firefox esr | < 68.5.0 | 68.5.0 |
| thunderbird | < 68.5.0 | 68.5.0 |
By downloading a file with the .fileloc extension, a semi-privileged extension could launch an arbitrary application on the user's computer. The attacker is restricted as they are unable to download non-quarantined files or supply command line arguments to the application, limiting the impact. Note: this issue only occurs on Mac OSX. Other operating systems are unaffected. This vulnerability affects Thunderbird < 68.5, Firefox < 73, and Firefox < ESR68.5.
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