The remote Redhat Enterprise Linux 5 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2018:1196 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux operating system.

    Security Fix(es):

    * An industry-wide issue was found in the way many modern microprocessor designs have implemented     speculative execution of instructions (a commonly used performance optimization). There are three primary     variants of the issue which differ in the way the speculative execution can be exploited. Variant     CVE-2017-5715 triggers the speculative execution by utilizing branch target injection. It relies on the     presence of a precisely-defined instruction sequence in the privileged code as well as the fact that     memory accesses may cause allocation into the microprocessor's data cache even for speculatively executed     instructions that never actually commit (retire). As a result, an unprivileged attacker could use this     flaw to cross the syscall and guest/host boundaries and read privileged memory by conducting targeted     cache side-channel attacks. (CVE-2017-5715, Important, x86 and x86-64)

    Red Hat would like to thank Google Project Zero for reporting this issue.

    Bug Fix(es):

    * The Return Trampolines (Retpolines) mechanism is a software construct that leverages specific knowledge     of the underlying hardware to mitigate the branch target injection, also known as Spectre variant 2     vulnerability described in CVE-2017-5715. With this update, the support for Retpolines has been     implemented into the Red Hat Enterprise Linux kernel. (BZ#1535650)

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

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

Detections

Analytics

RHEL 5 : kernel (RHSA-2018:1196)

medium Nessus Plugin ID 210260

Version 1.3

Version 1.2

Version 1.1

Version 1.3 Nov 7, 2024, 2:42 AM CVSS metrics ("Cvssv4 score" set to 0.0) CVSSv2 severity (based on None, severity decreased from "High" to "Low") Plugin metadata Plugin Feed: 202411070242
Version 1.2 Nov 6, 2024, 9:25 AM Exploit attributes ("Exploited by malware" set to "True") Plugin Feed: 202411060925
Version 1.1 Nov 5, 2024, 12:50 PM New Plugin Feed: 202411051250