The remote Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4308-1 advisory.

    it was discovered that Twisted incorrectly validated or sanitized certain URIs or HTTP methods. A remote     attacker could use this issue to inject invalid characters and possibly perform header injection attacks.
    (CVE-2019-12387)

    It was discovered that Twisted incorrectly verified XMPP TLS certificates. A remote attacker could     possibly use this issue to perform a machine-in-the-middle attack and obtain sensitive information.
    (CVE-2019-12855)

    It was discovered that Twisted incorrectly handled HTTP/2 connections. A remote attacker could possibly     use this issue to cause Twisted to hang or consume resources, leading to a denial of service. This issue     only affected Ubuntu 18.04 LTS and Ubuntu 19.10. (CVE-2019-9512, CVE-2019-9514, CVE-2019-9515)

    Jake Miller and ZeddYu Lu discovered that Twisted incorrectly handled certain content-length headers. A     remote attacker could possibly use this issue to perform HTTP request splitting attacks. (CVE-2020-10108,     CVE-2020-10109)

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 16.04 LTS / 18.04 LTS : Twisted vulnerabilities (USN-4308-1)

critical Nessus Plugin ID 134758

Version 1.9