The remote Ubuntu 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6747-1 advisory.

    Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially     crafted website, an attacker could potentially exploit these to cause a denial of service, obtain     sensitive information across domains, or execute arbitrary code. (CVE-2024-3852, CVE-2024-3864,     CVE-2024-3865)

    Bartek Nowotarski discovered that Firefox did not properly limit HTTP/2 CONTINUATION frames. An attacker     could potentially exploit this issue to cause a denial of service. (CVE-2024-3302)

    Gary Kwong discovered that Firefox did not properly manage memory when running garbage collection during     realm initialization. An attacker could potentially exploit this issue to cause a denial of service, or     execute arbitrary code. (CVE-2024-3853)

    Lukas Bernhard discovered that Firefox did not properly manage memory during JIT optimisations, leading to     an out-of-bounds read vulnerability. An attacker could possibly use this issue to cause a denial of     service or expose sensitive information. (CVE-2024-3854, CVE-2024-3855)

    Nan Wang discovered that Firefox did not properly manage memory during WASM garbage collection. An     attacker could potentially exploit this issue to cause a denial of service, or execute arbitrary code.
    (CVE-2024-3856)

    Lukas Bernhard discovered that Firefox did not properly manage memory when handling JIT created code     during garbage collection. An attacker could potentially exploit this issue to cause a denial of service,     or execute arbitrary code. (CVE-2024-3857)

    Lukas Bernhard discovered that Firefox did not properly manage memory when tracing in JIT. An attacker     could potentially exploit this issue to cause a denial of service. (CVE-2024-3858)

    Ronald Crane discovered that Firefox did not properly manage memory in the OpenType sanitizer on 32-bit     devices, leading to an out-of-bounds read

    vulnerability. An attacker could possibly use this issue to cause a denial of service or expose sensitive     information. (CVE-2024-3859)

    Garry Kwong discovered that Firefox did not properly manage memory when tracing empty shape lists in JIT.
    An attacker could potentially exploit

    this issue to cause a denial of service. (CVE-2024-3860)

    Ronald Crane discovered that Firefox did not properly manage memory when handling an AlignedBuffer. An     attacker could potentially exploit this

    issue to cause denial of service, or execute arbitrary code.

    (CVE-2024-3861)

    Ronald Crane discovered that Firefox did not properly manage memory when handling code in MarkStack. An     attacker could possibly use this issue to cause a denial of service or execute arbitrary code.
    (CVE-2024-3862)

Tenable has extracted the preceding description block directly from the Ubuntu 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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Ubuntu 20.04 LTS : Firefox vulnerabilities (USN-6747-1)

high Nessus Plugin ID 193788

Version 1.2