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Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2018-4215)

medium Nessus Plugin ID 117493

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Synopsis

The remote Oracle Linux host is missing a security update.

Description

The remote Oracle Linux 6 / 7 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2018-4215 advisory.

 - x86/speculation/l1tf: Fix overflow in l1tf_pfn_limit() on 32bit (Vlastimil Babka) [Orabug: 28505476] {CVE-2018-3620}
 - x86/speculation/l1tf: Protect PAE swap entries against L1TF (Vlastimil Babka) [Orabug: 28505476] {CVE-2018-3620}
 - x86/speculation/l1tf: Extend 64bit swap file size limit (Vlastimil Babka) [Orabug: 28505476] {CVE-2018-3620}
 - mm, fremap: mitigate L1TF in remap_file_pages (Daniel Jordan) [Orabug: 28505476] {CVE-2018-3620}
 - x86/speculation: Don't mark cpu_no_l1tf __initconst (Boris Ostrovsky) [Orabug: 28505476] {CVE-2018-3620}
 - x86/mm/kmmio: Make the tracer robust against L1TF (Andi Kleen) [Orabug: 28505476] {CVE-2018-3620}
 - x86/mm/pat: Make set_memory_np() L1TF safe (Andi Kleen) [Orabug: 28505476] {CVE-2018-3620}
 - x86/mm/pat: Ensure cpa->pfn only contains page frame numbers (Matt Fleming) [Orabug: 28505476] {CVE-2018-3620}
 - x86/speculation/l1tf: Make pmd/pud_mknotpresent() invert (Andi Kleen) [Orabug: 28505476] {CVE-2018-3620}
 - x86/speculation/l1tf: Exempt zeroed PTEs from inversion (Sean Christopherson) [Orabug: 28505476] {CVE-2018-3620}
 - x86/speculation/l1tf: Invert all not present mappings (Andi Kleen) [Orabug: 28505476] {CVE-2018-3620}
 - x86/bugs: Move the l1tf function and define pr_fmt properly (Konrad Rzeszutek Wilk) [Orabug: 28505476] {CVE-2018-3620}
 - x86/speculation/l1tf: Limit swap file size to MAX_PA/2 (Andi Kleen) [Orabug: 28505476] {CVE-2018-3620}
 - x86/speculation/l1tf: Disallow non privileged high MMIO PROT_NONE mappings (Andi Kleen) [Orabug:
 28505476] {CVE-2018-3620}
 - mm/pagewalk.c: prevent positive return value of walk_page_test() from being passed to callers (Naoya Horiguchi) [Orabug: 28505476] {CVE-2018-3620}
 - pagewalk: improve vma handling (Naoya Horiguchi) [Orabug: 28505476] {CVE-2018-3620}
 - mm/pagewalk: remove pgd_entry() and pud_entry() (Naoya Horiguchi) [Orabug: 28505476] {CVE-2018-3620}
 - mm/pagewalk.c: fix walk_page_range() access of wrong PTEs (Chen LinX) [Orabug: 28505476] {CVE-2018-3620}
 - x86/speculation/l1tf: Add sysfs reporting for l1tf (Andi Kleen) [Orabug: 28505476] {CVE-2018-3620}
 - x86/cpu/intel: Add Knights Mill to Intel family (Piotr Luc) [Orabug: 28505476] {CVE-2018-3620}
 - x86/bugs: Concentrate bug reporting into a separate function (Konrad Rzeszutek Wilk) [Orabug: 28505476] {CVE-2018-3620}
 - x86/bugs: Concentrate bug detection into a separate function (Konrad Rzeszutek Wilk) [Orabug: 28505476] {CVE-2018-3620}
 - x86/cpufeature: Add X86_FEATURE_IA32_ARCH_CAPS and X86_FEATURE_IBRS_ATT (Konrad Rzeszutek Wilk) [Orabug: 28505476] {CVE-2018-3620}
 - x86/speculation/l1tf: Make sure the first page is always reserved (Andi Kleen) [Orabug: 28505476] {CVE-2018-3620}
 - x86/speculation/l1tf: Fix up pte->pfn conversion for PAE (Michal Hocko) [Orabug: 28505476] {CVE-2018-3620}
 - x86/speculation/l1tf: Protect PROT_NONE PTEs against speculation (Andi Kleen) [Orabug: 28505476] {CVE-2018-3620}
 - x86/speculation/l1tf: Protect swap entries against L1TF (Linus Torvalds) [Orabug: 28505476] {CVE-2018-3620}
 - x86/speculation/l1tf: Change order of offset/type in swap entry (Linus Torvalds) [Orabug: 28505476] {CVE-2018-3620}
 - x86/mm: Fix swap entry comment and macro (Dave Hansen) [Orabug: 28505476] {CVE-2018-3620}
 - x86/mm: Move swap offset/type up in PTE to work around erratum (Dave Hansen) [Orabug: 28505476] {CVE-2018-3620}
 - mm: x86 pgtable: drop unneeded preprocessor ifdef (Cyrill Gorcunov) [Orabug: 28505476] {CVE-2018-3620}
 - x86/speculation/l1tf: Increase 32bit PAE __PHYSICAL_PAGE_SHIFT (Andi Kleen) [Orabug: 28505476] {CVE-2018-3620}
 - x86/mm: Fix regression with huge pages on PAE (Kirill A. Shutemov) [Orabug: 28505476] {CVE-2018-3620}
 - x86/asm: Fix pud/pmd interfaces to handle large PAT bit (Toshi Kani) [Orabug: 28505476] {CVE-2018-3620}
 - x86/asm: Add pud/pmd mask interfaces to handle large PAT bit (Toshi Kani) [Orabug: 28505476] {CVE-2018-3620}
 - x86/asm: Move PUD_PAGE macros to page_types.h (Toshi Kani) [Orabug: 28505476] {CVE-2018-3620}
 - x86/speculation: sort X86_BUG_* with X86_FEATURE_* (Daniel Jordan) [Orabug: 28505476] {CVE-2018-3620}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue 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-2018-4215.html

Plugin Details

Severity: Medium

ID: 117493

File Name: oraclelinux_ELSA-2018-4215.nasl

Version: 1.10

Type: local

Agent: unix

Published: 9/14/2018

Updated: 10/22/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 3.5

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

CVSS Score Source: CVE-2018-3620

CVSS v3

Risk Factor: Medium

Base Score: 5.6

Temporal Score: 4.9

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:U/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-debug, p-cpe:/a:oracle:linux:kernel-uek-devel, p-cpe:/a:oracle:linux:dtrace-modules-3.8.13-118.24.2.el6uek, p-cpe:/a:oracle:linux:kernel-uek-doc, p-cpe:/a:oracle:linux:dtrace-modules-3.8.13-118.24.2.el7uek, p-cpe:/a:oracle:linux:kernel-uek-firmware, p-cpe:/a:oracle:linux:kernel-uek, cpe:/o:oracle:linux:6

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: 9/13/2018

Vulnerability Publication Date: 8/10/2018

Reference Information

CVE: CVE-2018-3620