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

High Nessus Plugin ID 117378

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: 1.2

Type: local

Agent: unix

Published: 2018/09/10

Modified: 2018/10/01

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.2

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

CVSS v3.0

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

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

Patch Publication Date: 2018/09/07

Reference Information

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