The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:5015 advisory.

    Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and     portability.

    This update upgrades Firefox to version 91.4.0 ESR.

    Security Fix(es):

    * Mozilla: Memory safety bugs fixed in Firefox 95 and Firefox ESR 91.4

    * Mozilla: URL leakage when navigating while executing asynchronous function (CVE-2021-43536)

    * Mozilla: Heap buffer overflow when using structured clone (CVE-2021-43537)

    * Mozilla: Missing fullscreen and pointer lock notification when requesting both (CVE-2021-43538)

    * Mozilla: GC rooting failure when calling wasm instance methods (CVE-2021-43539)

    * Mozilla: External protocol handler parameters were unescaped (CVE-2021-43541)

    * Mozilla: XMLHttpRequest error codes could have leaked the existence of an external protocol handler     (CVE-2021-43542)

    * Mozilla: Bypass of CSP sandbox directive when embedding (CVE-2021-43543)

    * Mozilla: Denial of Service when using the Location API in a loop (CVE-2021-43545)

    * Mozilla: Cursor spoofing could overlay user interface when native cursor is zoomed (CVE-2021-43546)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

Detections

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RHEL 8 : firefox (RHSA-2021:5015)

critical Nessus Plugin ID 155956

Version 1.10