Oracle Linux 6 : Unbreakable Enterprise kernel (ELSA-2018-4214) (Foreshadow)

High Nessus Plugin ID 117513

Synopsis

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

Description

Description of changes:

[2.6.39-400.301.1.el6uek]
- x86/speculation/l1tf: Fix overflow in l1tf_pfn_limit() on 32bit (Vlastimil Babka) [Orabug: 28505519] {CVE-2018-3620}
- x86/speculation/l1tf: Exempt zeroed PTEs from inversion (Sean Christopherson) [Orabug: 28505519] {CVE-2018-3620}
- x86/speculation/l1tf: Protect PAE swap entries against L1TF (Vlastimil Babka) [Orabug: 28505519] {CVE-2018-3620}
- x86/speculation/l1tf: Extend 64bit swap file size limit (Vlastimil Babka) [Orabug: 28505519] {CVE-2018-3620}
- mm, fremap: mitigate L1TF in remap_file_pages (Daniel Jordan) [Orabug: 28505519] {CVE-2018-3620}
- x86/speculation: Don't mark cpu_no_l1tf __initconst (Boris Ostrovsky) [Orabug: 28505519] {CVE-2018-3620}
- x86/mm/kmmio: Make the tracer robust against L1TF (Andi Kleen) [Orabug: 28505519] {CVE-2018-3620}
- x86/speculation/l1tf: Make pmd/pud_mknotpresent() invert (Andi Kleen) [Orabug: 28505519] {CVE-2018-3620}
- x86/speculation/l1tf: Invert all not present mappings (Andi Kleen) [Orabug: 28505519] {CVE-2018-3620}
- x86/bugs: Move the l1tf function and define pr_fmt properly (Konrad Rzeszutek Wilk) [Orabug: 28505519] {CVE-2018-3620}
- x86/speculation/l1tf: Limit swap file size to MAX_PA/2 (Andi Kleen) [Orabug: 28505519] {CVE-2018-3620}
- x86/speculation/l1tf: Disallow non privileged high MMIO PROT_NONE mappings (Andi Kleen) [Orabug: 28505519] {CVE-2018-3620}
- mm/pagewalk.c: prevent positive return value of walk_page_test() from being passed to callers (Naoya Horiguchi) [Orabug: 28505519] {CVE-2018-3620}
- mm: pagewalk: fix misbehavior of walk_page_range for vma(VM_PFNMAP) (Naoya Horiguchi) [Orabug: 28505519] {CVE-2018-3620}
- pagewalk: improve vma handling (Naoya Horiguchi) [Orabug: 28505519] {CVE-2018-3620}
- mm/pagewalk: remove pgd_entry() and pud_entry() (Naoya Horiguchi) [Orabug: 28505519] {CVE-2018-3620}
- mm/pagewalk.c: fix walk_page_range() access of wrong PTEs (Chen LinX) [Orabug: 28505519] {CVE-2018-3620}
- mm/pagewalk.c: walk_page_range should avoid VM_PFNMAP areas (Cliff Wickman) [Orabug: 28505519] {CVE-2018-3620}
- pagewalk: don't look up vma if walk->hugetlb_entry is unused (KOSAKI Motohiro) [Orabug: 28505519] {CVE-2018-3620}
- x86/speculation/l1tf: Add sysfs reporting for l1tf (Andi Kleen) [Orabug: 28505519] {CVE-2018-3620}
- x86/bugs: Concentrate bug reporting into a separate function (Konrad Rzeszutek Wilk) [Orabug: 28505519] {CVE-2018-3620}
- x86/bugs: Concentrate bug detection into a separate function (Konrad Rzeszutek Wilk) [Orabug: 28505519] {CVE-2018-3620}
- x86/cpufeature: Add X86_FEATURE_IA32_ARCH_CAPS and X86_FEATURE_IBRS_ATT (Konrad Rzeszutek Wilk) [Orabug: 28505519] {CVE-2018-3620}
- x86/speculation/l1tf: Make sure the first page is always reserved (Andi Kleen) [Orabug: 28505519] {CVE-2018-3620}
- x86/speculation/l1tf: Fix up pte->pfn conversion for PAE (Michal Hocko) [Orabug: 28505519] {CVE-2018-3620}
- x86/speculation/l1tf: Protect PROT_NONE PTEs against speculation (Andi Kleen) [Orabug: 28505519] {CVE-2018-3620}
- x86/speculation/l1tf: Protect swap entries against L1TF (Linus Torvalds) [Orabug: 28505519] {CVE-2018-3620}
- x86/speculation/l1tf: Change order of offset/type in swap entry (Linus Torvalds) [Orabug: 28505519] {CVE-2018-3620}
- x86/mm: Fix swap entry comment and macro (Dave Hansen) [Orabug: 28505519] {CVE-2018-3620}
- x86/mm: Move swap offset/type up in PTE to work around erratum (Dave Hansen) [Orabug: 28505519] {CVE-2018-3620}
- mm: x86 pgtable: drop unneeded preprocessor ifdef (Cyrill Gorcunov) [Orabug: 28505519] {CVE-2018-3620}
- x86/speculation/l1tf: Increase 32bit PAE __PHYSICAL_PAGE_SHIFT (Andi Kleen) [Orabug: 28505519] {CVE-2018-3620}
- x86/mm: Fix regression with huge pages on PAE (Kirill A. Shutemov) [Orabug: 28505519] {CVE-2018-3620}
- x86/asm: Fix pud/pmd interfaces to handle large PAT bit (Toshi Kani) [Orabug: 28505519] {CVE-2018-3620}
- x86/asm: Add pud/pmd mask interfaces to handle large PAT bit (Toshi Kani) [Orabug: 28505519] {CVE-2018-3620}
- x86/asm: Move PUD_PAGE macros to page_types.h (Toshi Kani) [Orabug: 28505519] {CVE-2018-3620}
- x86/cpufeature: uniquely define *IA32_ARCH_CAPS and *IBRS_ATT (Daniel Jordan) [Orabug: 28505519] {CVE-2018-3620}
- Disable kaiser if the cpu is not vulnerable to X86_BUG_CPU_MELTDOWN (Kanth Ghatraju) [Orabug: 28001909]
- x86/pti: Do not enable PTI on CPUs which are not vulnerable to Meltdown (David Woodhouse) [Orabug: 28001909]
- x86/msr: Add definitions for IA32_ARCH_CAPABILITIES MSR (David Woodhouse) [Orabug: 28001909]
- Add driver auto probing for x86 features v4 (Andi Kleen) [Orabug: 28001909]
- mm/mempolicy: fix use after free when calling get_mempolicy (zhong jiang) [Orabug: 28022110] {CVE-2018-10675}
- xen-netback: do not requeue skb if xenvif is already disconnected (Dongli Zhang) [Orabug: 28247698]
- posix-timer: Properly check sigevent->sigev_notify (Thomas Gleixner) [Orabug: 28481397] {CVE-2017-18344}

Solution

Update the affected unbreakable enterprise kernel packages.

See Also

https://oss.oracle.com/pipermail/el-errata/2018-September/008031.html

Plugin Details

Severity: High

ID: 117513

File Name: oraclelinux_ELSA-2018-4214.nasl

Version: 1.6

Type: local

Agent: unix

Published: 2018/09/17

Updated: 2019/04/05

Dependencies: 12634, 122878

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.2

Temporal Score: 6

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

Temporal Vector: CVSS2#E:F/RL:OF/RC:C

CVSS v3.0

Base Score: 7.8

Temporal Score: 7.2

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

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

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

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: 2018/09/14

Vulnerability Publication Date: 2018/05/02

Exploitable With

CANVAS (CANVAS)

Reference Information

CVE: CVE-2017-18344, CVE-2018-10675, CVE-2018-3620