The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:3666 advisory.

    The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with     extremely high determinism requirements.

    Security Fix(es):

    * kernel: stack-based buffer overflow in chap_server_compute_md5() in iscsi target (CVE-2018-14633)

    * kernel: NULL pointer dereference in af_netlink.c:__netlink_ns_capable() allows for denial of service     (CVE-2018-14646)

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

    Red Hat would like to thank Vincent Pelletier for reporting CVE-2018-14633 and Christian Brauner for     reporting CVE-2018-14646.

    Bug Fix(es):

    * The kernel-rt packages have been upgraded to the 3.10.0-957.1.2 source tree, which provides a number of     bug fixes over the previous version. (BZ#1632386)

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.

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3776-2 advisory.

    USN-3776-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the     corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu     14.04 LTS.

    Jann Horn discovered that the vmacache subsystem did not properly handle sequence number overflows,     leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service     (system crash) or execute arbitrary code. (CVE-2018-17182)

    It was discovered that the paravirtualization implementation in the Linux kernel did not properly handle     some indirect calls, reducing the effectiveness of Spectre v2 mitigations for paravirtual guests. A local     attacker could use this to expose sensitive information. (CVE-2018-15594)

    It was discovered that microprocessors utilizing speculative execution and prediction of return addresses     via Return Stack Buffer (RSB) may allow unauthorized memory reads via sidechannel attacks. An attacker     could use this to expose sensitive information. (CVE-2018-15572)

    It was discovered that a NULL pointer dereference could be triggered in the OCFS2 file system     implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system     crash). (CVE-2017-18216)

    It was discovered that a race condition existed in the raw MIDI driver for the Linux kernel, leading to a     double free vulnerability. A local attacker could use this to cause a denial of service (system crash) or     possibly execute arbitrary code. (CVE-2018-10902)

    It was discovered that a stack-based buffer overflow existed in the iSCSI target implementation of the     Linux kernel. A remote attacker could use this to cause a denial of service (system crash).
    (CVE-2018-14633)

    It was discovered that the YUREX USB device driver for the Linux kernel did not properly restrict user     space reads or writes. A physically proximate attacker could use this to cause a denial of service (system     crash) or possibly execute arbitrary code. (CVE-2018-16276)

    It was discovered that a memory leak existed in the IRDA subsystem of the Linux kernel. A local attacker     could use this to cause a denial of service (kernel memory exhaustion). (CVE-2018-6554)

    It was discovered that a use-after-free vulnerability existed in the IRDA implementation in the Linux     kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute     arbitrary code. (CVE-2018-6555)

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.

This plugin has been deprecated as it does not adhere to established standards for this style of check.

ID	Name	Product	Family	Published	Updated	Severity
119173	RHEL 7 : kernel-rt (RHSA-2018:3666)	Nessus	Red Hat Local Security Checks	11/27/2018	11/5/2024	high
117871	Ubuntu 14.04 LTS : Linux kernel (Xenial HWE) vulnerabilities (USN-3776-2)	Nessus	Ubuntu Local Security Checks	10/2/2018	8/28/2024	high
195652	RHEL 7 : kernel (Unpatched Vulnerability) (deprecated)	Nessus	Red Hat Local Security Checks	5/11/2024	5/31/2024	critical

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