The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-2848-1 advisory.

    Felix Wilhelm discovered a race condition in the Xen paravirtualized drivers which can cause double fetch     vulnerabilities. An attacker in the paravirtualized guest could exploit this flaw to cause a denial of     service (crash the host) or potentially execute arbitrary code on the host. (CVE-2015-8550)

    Konrad Rzeszutek Wilk discovered the Xen PCI backend driver does not perform consistency checks on the     device's state. An attacker could exploit this flaw to cause a denial of service (NULL dereference) on the     host. (CVE-2015-8551)

    Konrad Rzeszutek Wilk discovered the Xen PCI backend driver does not perform consistency checks on the     device's state. An attacker could exploit this flaw to cause a denial of service by flooding the logging     system with WARN() messages causing the initial domain to exhaust disk space. (CVE-2015-8552)

    Jann Horn discovered a ptrace issue with user namespaces in the Linux kernel. The namespace owner could     potentially exploit this flaw by ptracing a root owned process entering the user namespace to elevate its     privileges and potentially gain access outside of the namespace. (http://bugs.launchpad.net/bugs/1527374,     CVE-2015-8709)

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 14.04 LTS : Linux kernel vulnerabilities (USN-2848-1)

high Nessus Plugin ID 87531

Version 2.16