Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2018-4210) (Foreshadow)

high Nessus Plugin ID 117378
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

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

Description

Description of changes:

[4.1.12-124.19.1.el7uek]
- x86/entry/64: Ensure %ebx handling correct in xen_failsafe_callback (George Kennedy) [Orabug: 28402927] {CVE-2018-14678}
- x86/speculation/l1tf: Increase l1tf memory limit for Nehalem+ (Andi Kleen) [Orabug: 28488808] {CVE-2018-3620}
- x86/speculation/l1tf: Suggest what to do on systems with too much RAM (Vlastimil Babka) [Orabug: 28488808] {CVE-2018-3620}
- x86/speculation/l1tf: Fix off-by-one error when warning that system has too much RAM (Vlastimil Babka) [Orabug: 28488808] {CVE-2018-3620}
- x86/speculation/l1tf: Fix overflow in l1tf_pfn_limit() on 32bit (Vlastimil Babka) [Orabug: 28488808] {CVE-2018-3620}
- x86/speculation/l1tf: Exempt zeroed PTEs from inversion (Sean Christopherson) [Orabug: 28488808] {CVE-2018-3620}
- x86/l1tf: Fix build error seen if CONFIG_KVM_INTEL is disabled (Guenter Roeck) [Orabug: 28488808] {CVE-2018-3620}
- x86/spectre: Add missing family 6 check to microcode check (Andi Kleen) [Orabug: 28488808] {CVE-2018-3620}
- KVM: x86: SVM: Call x86_spec_ctrl_set_guest/host() with interrupts disabled (Thomas Gleixner) [Orabug: 28488808] {CVE-2018-3646}
- x86/microcode: Allow late microcode loading with SMT disabled (Josh Poimboeuf) [Orabug: 28488808] {CVE-2018-3620}
- x86/microcode: Do not upload microcode if CPUs are offline (Ashok Raj) [Orabug: 28488808] {CVE-2018-3620}

Solution

Update the affected unbreakable enterprise kernel packages.

See Also

https://oss.oracle.com/pipermail/el-errata/2018-September/008015.html

https://oss.oracle.com/pipermail/el-errata/2018-September/008016.html

Plugin Details

Severity: High

ID: 117378

File Name: oraclelinux_ELSA-2018-4210.nasl

Version: 1.6

Type: local

Agent: unix

Published: 9/10/2018

Updated: 9/27/2019

Dependencies: ssh_get_info.nasl, linux_alt_patch_detect.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

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

CVSS v3

Risk Factor: High

Base Score: 7.8

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

Vulnerability Information

CPE: cpe:2.3:o:oracle:linux:6:*:*:*:*:*:*:*, cpe:2.3:o:oracle:linux:7:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:kernel-uek:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:kernel-uek-debug:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:kernel-uek-debug-devel:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:kernel-uek-devel:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:kernel-uek-doc:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:kernel-uek-firmware:*:*:*:*:*:*:*

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

Patch Publication Date: 9/7/2018

Vulnerability Publication Date: 7/28/2018

Reference Information

CVE: CVE-2018-3620, CVE-2018-3646, CVE-2018-14678