The remote Ubuntu 20.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-6218-1 advisory.

    A use-after-free was discovered in Firefox when handling workers. An attacker could potentially exploit     this to cause a denial of service, or execute arbitrary code.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Detections

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Ubuntu 20.04 LTS : Firefox vulnerability (USN-6218-1)

high Nessus Plugin ID 178207

Version 1.0