Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2018-4011) (Meltdown) (Spectre)

Medium Nessus Plugin ID 106040

Synopsis

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

Description

Description of changes:

[4.1.12-112.14.11.el7uek]
- x86/pti/efi: broken conversion from efi to kernel page table (Pavel Tatashin) [Orabug: 27363926] [Orabug: 27352353] {CVE-2017-5754}
- x86/spec: Always set IBRS to guest value on VMENTER and host on VMEXIT (redux) (Konrad Rzeszutek Wilk) [Orabug: 27369994]
- x86/IBRS: Make sure we restore MSR_IA32_SPEC_CTRL to a valid value (Boris Ostrovsky) [Orabug: 27362581]
- x86/IBRS/IBPB: Set sysctl_ibrs/ibpb_enabled properly (Boris Ostrovsky) [Orabug: 27363792]
- x86/spec_ctrl: Add missing 'lfence' when IBRS is not supported. (Konrad Rzeszutek Wilk) [Orabug: 27339995] {CVE-2017-5715}
- x86/entry_64: TRACE_IRQS_OFF before re-enabling. (Jamie Iles) [Orabug: 27339995] {CVE-2017-5715}
- ptrace: remove unlocked RCU dereference. (Jamie Iles) [Orabug: 27339995] {CVE-2017-5715}
- x86/ia32: Adds code hygiene for 32bit SYSCALL instruction entry. (Konrad Rzeszutek Wilk) [Orabug: 27339995] {CVE-2017-5715}
- x86/ia32: don't save registers on audit call (Konrad Rzeszutek Wilk) [Orabug: 27339995] {CVE-2017-5715}
- x86/spec/ia32: Sprinkle IBRS and RSB at the 32-bit SYSCALL (Konrad Rzeszutek Wilk) [Orabug: 27339995] {CVE-2017-5715}
- x86/ia32: Move STUFF_RSB And ENABLE_IBRS (Konrad Rzeszutek Wilk) [Orabug: 27339995] {CVE-2017-5715}
- x86/spec: Always set IBRS to guest value on VMENTER and host on VMEXIT. (Konrad Rzeszutek Wilk) [Orabug: 27365544] {CVE-2017-5715}

Solution

Update the affected unbreakable enterprise kernel packages.

See Also

https://oss.oracle.com/pipermail/el-errata/2018-January/007456.html

https://oss.oracle.com/pipermail/el-errata/2018-January/007457.html

Plugin Details

Severity: Medium

ID: 106040

File Name: oraclelinux_ELSA-2018-4011.nasl

Version: Revision: 1.4

Type: local

Agent: unix

Published: 2018/01/15

Modified: 2018/02/02

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSSv2

Base Score: 4.7

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

CVSSv3

Base Score: 5.6

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

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2018/01/13

Reference Information

CVE: CVE-2017-5715, CVE-2017-5754

IAVA: 2018-A-0019, 2018-A-0020