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Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2019-4629)

medium Nessus Plugin ID 125114

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Synopsis

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

Description

The remote Oracle Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-4629 advisory.

 - x86/mds: Add empty commit for CVE-2019-11091 (Konrad Rzeszutek Wilk) [Orabug: 29721935] {CVE-2019-11091}
 - x86/speculation: Support 'mitigations=' cmdline option (Josh Poimboeuf) [Orabug: 29526900] {CVE-2018-12126} {CVE-2018-12130} {CVE-2018-12127}
 - cpu/speculation: Add 'mitigations=' cmdline option (Josh Poimboeuf) [Orabug: 29526900] {CVE-2018-12126} {CVE-2018-12130} {CVE-2018-12127}
 - x86/speculation/mds: Print SMT vulnerable on MSBDS with mitigations off (Konrad Rzeszutek Wilk) [Orabug: 29526900] {CVE-2018-12126} {CVE-2018-12130} {CVE-2018-12127}
 - x86/speculation/mds: Fix comment (Boris Ostrovsky) [Orabug: 29526900] {CVE-2018-12126} {CVE-2018-12130} {CVE-2018-12127}
 - x86/speculation/mds: update mds_mitigation to reflect debugfs configuration (Mihai Carabas) [Orabug:
 29526900] {CVE-2018-12126} {CVE-2018-12130} {CVE-2018-12127}
 - x86/speculation/mds: fix microcode late loading (Mihai Carabas) [Orabug: 29526900] {CVE-2018-12126} {CVE-2018-12130} {CVE-2018-12127}
 - x86/speculation/mds: Add boot option to enable MDS protection only while in idle (Boris Ostrovsky) [Orabug: 29526900] {CVE-2018-12126} {CVE-2018-12130} {CVE-2018-12127}
 - x86/speculation/mds: Improve coverage for MDS vulnerability (Boris Ostrovsky) [Orabug: 29526900] {CVE-2018-12126} {CVE-2018-12130} {CVE-2018-12127}
 - x86/speculation/mds: Add SMT warning message (Josh Poimboeuf) [Orabug: 29526900] {CVE-2018-12126} {CVE-2018-12130} {CVE-2018-12127}
 - x86/speculation/mds: Add mds=full,nosmt cmdline option (Josh Poimboeuf) [Orabug: 29526900] {CVE-2018-12126} {CVE-2018-12130} {CVE-2018-12127}
 - Documentation: Add MDS vulnerability documentation (Thomas Gleixner) [Orabug: 29526900] {CVE-2018-12126} {CVE-2018-12130} {CVE-2018-12127}
 - Documentation: Move L1TF to separate directory (Thomas Gleixner) [Orabug: 29526900] {CVE-2018-12126} {CVE-2018-12130} {CVE-2018-12127}
 - x86/speculation/mds: Add mitigation mode VMWERV (Thomas Gleixner) [Orabug: 29526900] {CVE-2018-12126} {CVE-2018-12130} {CVE-2018-12127}
 - x86/speculation/mds: Add debugfs for controlling MDS (Kanth Ghatraju) [Orabug: 29526900] {CVE-2018-12126} {CVE-2018-12130} {CVE-2018-12127}
 - x86/speculation/mds: Add sysfs reporting for MDS (Thomas Gleixner) [Orabug: 29526900] {CVE-2018-12126} {CVE-2018-12130} {CVE-2018-12127}
 - x86/speculation/mds: Add mitigation control for MDS (Thomas Gleixner) [Orabug: 29526900] {CVE-2018-12126} {CVE-2018-12130} {CVE-2018-12127}
 - x86/speculation/mds: Conditionally clear CPU buffers on idle entry (Thomas Gleixner) [Orabug: 29526900] {CVE-2018-12126} {CVE-2018-12130} {CVE-2018-12127}
 - x86/kvm/vmx: Add MDS protection when L1D Flush is not active (Thomas Gleixner) [Orabug: 29526900] {CVE-2018-12126} {CVE-2018-12130} {CVE-2018-12127}
 - x86/speculation/mds: Clear CPU buffers on exit to user (Thomas Gleixner) [Orabug: 29526900] {CVE-2018-12126} {CVE-2018-12130} {CVE-2018-12127}
 - x86/speculation/mds: Add mds_clear_cpu_buffers() (Thomas Gleixner) [Orabug: 29526900] {CVE-2018-12126} {CVE-2018-12130} {CVE-2018-12127}
 - x86/kvm: Expose X86_FEATURE_MD_CLEAR to guests (Andi Kleen) [Orabug: 29526900] {CVE-2018-12126} {CVE-2018-12130} {CVE-2018-12127}
 - x86/speculation/mds: Add BUG_MSBDS_ONLY (Thomas Gleixner) [Orabug: 29526900] {CVE-2018-12126} {CVE-2018-12130} {CVE-2018-12127}
 - x86/speculation/mds: Add basic bug infrastructure for MDS (Andi Kleen) [Orabug: 29526900] {CVE-2018-12126} {CVE-2018-12130} {CVE-2018-12127} {CVE-2018-12126} {CVE-2018-12130} {CVE-2018-12127}
 - x86/speculation: Consolidate CPU whitelists (Thomas Gleixner) [Orabug: 29526900] {CVE-2018-12126} {CVE-2018-12130} {CVE-2018-12127}
 - x86/msr-index: Cleanup bit defines (Thomas Gleixner) [Orabug: 29526900] {CVE-2018-12126} {CVE-2018-12130} {CVE-2018-12127}
 - Documentation/l1tf: Fix small spelling typo (Salvatore Bonaccorso) [Orabug: 29526900] {CVE-2018-12126} {CVE-2018-12130} {CVE-2018-12127}

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-2019-4629.html

Plugin Details

Severity: Medium

ID: 125114

File Name: oraclelinux_ELSA-2019-4629.nasl

Version: 1.11

Type: local

Agent: unix

Published: 5/15/2019

Updated: 10/22/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 3.7

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

CVSS Score Source: CVE-2019-11091

CVSS v3

Risk Factor: Medium

Base Score: 5.6

Temporal Score: 5.1

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

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

Vulnerability Information

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

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/14/2019

Vulnerability Publication Date: 5/7/2019

Reference Information

CVE: CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, CVE-2019-11091

IAVA: 2019-A-0166