Detections
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Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2019-4836)

medium Nessus Plugin ID 130994

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Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-4836 advisory.

 - kvm: x86: mmu: Recovery of shattered NX large pages (Junaid Shahid) [Orabug: 29967630] {CVE-2018-12207}
 - kvm: Add helper function for creating VM worker threads (Junaid Shahid) [Orabug: 29967630] {CVE-2018-12207}
 - kvm: mmu: ITLB_MULTIHIT mitigation (Paolo Bonzini) [Orabug: 29967630] {CVE-2018-12207}
 - x86: Add ITLB_MULTIHIT bug infrastructure (Pawan Gupta) [Orabug: 29967630] {CVE-2018-12207}
 - KVM: x86: remove now unneeded hugepage gfn adjustment (Paolo Bonzini) [Orabug: 29967630] {CVE-2018-12207}
 - KVM: x86: make FNAME(fetch) and __direct_map more similar (Paolo Bonzini) [Orabug: 29967630] {CVE-2018-12207}
 - kvm: x86: Do not release the page inside mmu_set_spte() (Junaid Shahid) [Orabug: 29967630] {CVE-2018-12207}
 - kvm: Convert kvm_lock to a mutex (Junaid Shahid) [Orabug: 29967630] {CVE-2018-12207}
 - x86/tsx: Add config options to set tsx=on|off|auto (Michal Hocko) [Orabug: 30419234] {CVE-2019-11135}
 - x86/speculation/taa: Add documentation for TSX Async Abort (Pawan Gupta) [Orabug: 30419234] {CVE-2019-11135}
 - x86/tsx: Add 'auto' option to the tsx= cmdline parameter (Pawan Gupta) [Orabug: 30419234] {CVE-2019-11135}
 - kvm/x86: Export MDS_NO=0 to guests when TSX is enabled (Pawan Gupta) [Orabug: 30419234] {CVE-2019-11135}
 - x86/speculation/taa: Add sysfs reporting for TSX Async Abort (Pawan Gupta) [Orabug: 30419234] {CVE-2019-11135}
 - x86/speculation/taa: Add mitigation for TSX Async Abort (Pawan Gupta) [Orabug: 30419234] {CVE-2019-11135}
 - x86/cpu: Add a 'tsx=' cmdline option with TSX disabled by default (Pawan Gupta) [Orabug: 30419234] {CVE-2019-11135}
 - x86/cpu: Add a helper function x86_read_arch_cap_msr() (Pawan Gupta) [Orabug: 30419234] {CVE-2019-11135}
 - x86/msr: Add the IA32_TSX_CTRL MSR (Pawan Gupta) [Orabug: 30419234] {CVE-2019-11135}
 - floppy: fix div-by-zero in setup_format_params (Denis Efremov) [Orabug: 30447842] {CVE-2019-14284}
 - net-sysfs: Fix mem leak in netdev_register_kobject (YueHaibing) [Orabug: 30350262] {CVE-2019-15916}

Tenable has extracted the preceding description block directly from the Oracle 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.

Solution

Update the affected packages.

See Also

https://linux.oracle.com/errata/ELSA-2019-4836.html

Plugin Details

Severity: Medium

ID: 130994

File Name: oraclelinux_ELSA-2019-4836.nasl

Version: 1.9

Type: local

Agent: unix

Published: 11/14/2019

Updated: 11/1/2024

Supported Sensors: Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N

CVSS Score Source: CVE-2019-11135

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:oracle:linux:kernel-uek-headers, p-cpe:/a:oracle:linux:kernel-uek-debug-devel, p-cpe:/a:oracle:linux:perf, p-cpe:/a:oracle:linux:kernel-uek-devel, cpe:/o:oracle:linux:7, p-cpe:/a:oracle:linux:kernel-uek-tools-libs-devel, p-cpe:/a:oracle:linux:kernel-uek-doc, p-cpe:/a:oracle:linux:python-perf, p-cpe:/a:oracle:linux:kernel-uek-tools, p-cpe:/a:oracle:linux:kernel-uek-tools-libs, p-cpe:/a:oracle:linux:kernel-uek, p-cpe:/a:oracle:linux:kernel-uek-debug

Required KB Items: Host/OracleLinux, Host/RedHat/release, Host/RedHat/rpm-list, Host/local_checks_enabled

Exploit Ease: No known exploits are available

Patch Publication Date: 11/12/2019

Vulnerability Publication Date: 7/26/2019

Reference Information

CVE: CVE-2018-12207, CVE-2019-11135, CVE-2019-14284, CVE-2019-15916

IAVA: 2020-A-0325-S