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Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2018-4022)

medium Nessus Plugin ID 106468

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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-2018-4022 advisory.

 - x86: Add another set of MSR accessor functions (Borislav Petkov) [Orabug: 27444923] {CVE-2017-5753}
 - userns: prevent speculative execution (Elena Reshetova) [Orabug: 27444923] {CVE-2017-5753}
 - udf: prevent speculative execution (Elena Reshetova) [Orabug: 27444923] {CVE-2017-5753}
 - fs: prevent speculative execution (Elena Reshetova) [Orabug: 27444923] {CVE-2017-5753}
 - qla2xxx: prevent speculative execution (Elena Reshetova) [Orabug: 27444923] {CVE-2017-5753}
 - p54: prevent speculative execution (Elena Reshetova) [Orabug: 27444923] {CVE-2017-5753}
 - carl9170: prevent speculative execution (Elena Reshetova) [Orabug: 27444923] {CVE-2017-5753}
 - uvcvideo: prevent speculative execution (Elena Reshetova) [Orabug: 27444923] {CVE-2017-5753}
 - locking/barriers: introduce new observable speculation barrier (Elena Reshetova) [Orabug: 27444923] {CVE-2017-5753}
 - x86/cpu/AMD: Remove now unused definition of MFENCE_RDTSC feature (Elena Reshetova) [Orabug: 27444923] {CVE-2017-5753}
 - x86/cpu/AMD: Make the LFENCE instruction serialized (Elena Reshetova) [Orabug: 27444923] {CVE-2017-5753}
 - x86/rsb: add comment specifying why we skip STUFF_RSB (Ankur Arora) [Orabug: 27451658] {CVE-2017-5715}
 - x86/rsb: make STUFF_RSB jmp labels more robust (Ankur Arora) [Orabug: 27451658] {CVE-2017-5715}
 - x86/spec: Also print IBRS if IBPB is disabled. (Konrad Rzeszutek Wilk) {CVE-2017-5715}
 - x86/spectre: Drop the warning about ibrs being obsolete. (Konrad Rzeszutek Wilk) {CVE-2017-5715}
 - Add set_ibrs_disabled and set_ibpb_disabled (Konrad Rzeszutek Wilk) [Orabug: 27376697] {CVE-2017-5715}
 - x86/spec: Don't print the Missing arguments for option spectre_v2 (Konrad Rzeszutek Wilk) [Orabug:
 27376697] {CVE-2017-5715}
 - x86/boot: Add early cmdline parsing for options with arguments (Tom Lendacky) [Orabug: 27376697] {CVE-2017-5715}
 - x86: Add command-line options 'spectre_v2' and 'nospectre_v2' (Kanth Ghatraju) [Orabug: 27376697] {CVE-2017-5715}
 - x86: Fix kABI build breakage (Konrad Rzeszutek Wilk) [Orabug: 27376697] {CVE-2017-5715}
 - x86/mm: Only set IBPB when the new thread cannot ptrace current thread (Konrad Rzeszutek Wilk) [Orabug:
 27376697] {CVE-2017-5715}
 - x86: Use PRED_CMD MSR when ibpb is enabled (Konrad Rzeszutek Wilk) [Orabug: 27376697] {CVE-2017-5715}
 - x86/mm: Set IBPB upon context switch (Brian Maly) [Orabug: 27376697] {CVE-2017-5715}
 - x86: Display correct settings for the SPECTRE_V[12] bug (Kanth Ghatraju) [Orabug: 27376697] {CVE-2017-5715} {CVE-2017-5753}
 - x86/cpu: Implement CPU vulnerabilites sysfs functions (Thomas Gleixner) [Orabug: 27376697] {CVE-2017-5715} {CVE-2017-5753}
 - x86/IBRS/IBPB: Set sysctl_ibrs/ibpb_enabled properly (Boris Ostrovsky) [Orabug: 27376697] {CVE-2017-5715}
 - x86/spec_ctrl: Disable if running as Xen PV guest (Konrad Rzeszutek Wilk) [Orabug: 27376697] {CVE-2017-5715}
 - sysfs/cpu: Add vulnerability folder (Thomas Gleixner) [Orabug: 27376697] {CVE-2017-5715} {CVE-2017-5754}
 - x86, cpu: Expand cpufeature facility to include cpu bugs (Borislav Petkov) [Orabug: 27376697] {CVE-2017-5715}
 - x86/cpufeatures: Add X86_BUG_SPECTRE_V[12] (Kanth Ghatraju) [Orabug: 27376697] {CVE-2017-5715}
 - x86/cpufeatures: Add X86_BUG_CPU_MELTDOWN (Kanth Ghatraju) [Orabug: 27376697] {CVE-2017-5754}
 - x86/entry: STUFF_RSB only after switching to kernel CR3 (Ankur Arora) [Orabug: 27376697] {CVE-2017-5715}
 - x86/entry: Stuff RSB for entry to kernel for non-SMEP platform (Tim Chen) [Orabug: 27376697] {CVE-2017-5715}
 - x86/IBRS: Make sure we restore MSR_IA32_SPEC_CTRL to a valid value (Boris Ostrovsky) [Orabug: 27376697] {CVE-2017-5715}
 - x86: Use IBRS for firmware update path (David Woodhouse) [Orabug: 27376697] {CVE-2017-5715}
 - x86/microcode: Recheck IBRS features on microcode reload (Tim Chen) [Orabug: 27376697] {CVE-2017-5715}
 - x86/idle: Disable IBRS entering idle and enable it on wakeup (Tim Chen) [Orabug: 27376697] {CVE-2017-5715}
 - x86/spec_ctrl: Add sysctl knobs to enable/disable SPEC_CTRL feature (Tim Chen) [Orabug: 27376697] {CVE-2017-5715}
 - x86/enter: Use IBRS on syscall and interrupts (Tim Chen) [Orabug: 27376697] {CVE-2017-5715}
 - x86/enter: MACROS to set/clear IBRS (Tim Chen) [Orabug: 27376697] {CVE-2017-5715}
 - x86/feature: Detect the x86 IBRS feature to control Speculation (Tim Chen) [Orabug: 27376697] {CVE-2017-5715}
 - x86/pti/efi: broken conversion from efi to kernel page table (Pavel Tatashin) [Orabug: 27333764] {CVE-2017-5754}
 - PTI: unbreak EFI old_memmap (Jiri Kosina) [Orabug: 27333764] [Orabug: 27333760] {CVE-2017-5754} {CVE-2017-5754}
 - kaiser: Set _PAGE_NX only if supported (Lepton Wu) [Orabug: 27333764] {CVE-2017-5754}
 - kaiser: rename X86_FEATURE_KAISER to X86_FEATURE_PTI (Mike Kravetz) [Orabug: 27333764] {CVE-2017-5754}
 - KPTI: Rename to PAGE_TABLE_ISOLATION (Kees Cook) [Orabug: 27333764] {CVE-2017-5754}
 - x86/kaiser: Check boottime cmdline params (Mike Kravetz) [Orabug: 27333764] {CVE-2017-5754}
 - kaiser: x86: Fix NMI handling (Jiri Kosina) [Orabug: 27333764] {CVE-2017-5754}
 - kaiser: move paravirt clock vsyscall mapping out of kaiser_init (Mike Kravetz) [Orabug: 27333764] {CVE-2017-5754}
 - kaiser: disable if xen PARAVIRT (Mike Kravetz) [Orabug: 27333764] {CVE-2017-5754}
 - x86/kaiser: Reenable PARAVIRT (Borislav Petkov) [Orabug: 27333764] {CVE-2017-5754}
 - kaiser: kaiser_flush_tlb_on_return_to_user() check PCID (Hugh Dickins) [Orabug: 27333764] {CVE-2017-5754}
 - kaiser: asm/tlbflush.h handle noPGE at lower level (Hugh Dickins) [Orabug: 27333764] {CVE-2017-5754}
 - kaiser: use ALTERNATIVE instead of x86_cr3_pcid_noflush (Hugh Dickins) [Orabug: 27333764] {CVE-2017-5754}
 - x86/kaiser: Rename and simplify X86_FEATURE_KAISER handling (Borislav Petkov) [Orabug: 27333764] {CVE-2017-5754}
 - kaiser: add 'nokaiser' boot option, using ALTERNATIVE (Hugh Dickins) [Orabug: 27333764] {CVE-2017-5754}
 - x86/alternatives: add asm ALTERNATIVE macro (Mike Kravetz) [Orabug: 27333764] {CVE-2017-5754}
 - kaiser: alloc_ldt_struct() use get_zeroed_page() (Hugh Dickins) [Orabug: 27333764] {CVE-2017-5754}
 - x86: kvmclock: Disable use from vDSO if KPTI is enabled (Ben Hutchings) [Orabug: 27333764] {CVE-2017-5754}
 - kaiser: Fix build with CONFIG_FUNCTION_GRAPH_TRACER (Kees Cook) [Orabug: 27333764] {CVE-2017-5754}
 - x86/mm/kaiser: re-enable vsyscalls (Andrea Arcangeli) [Orabug: 27333764] {CVE-2017-5754}
 - KAISER: Kernel Address Isolation (Richard Fellner) [Orabug: 27333764] {CVE-2017-5754}
 - kprobes: Prohibit probing on .entry.text code (Masami Hiramatsu) [Orabug: 27333764] {CVE-2017-5754}
 - x86/mm/64: Fix reboot interaction with CR4.PCIDE (Andy Lutomirski) [Orabug: 27333764] {CVE-2017-5754}
 - x86/mm: Enable CR4.PCIDE on supported systems (Andy Lutomirski) [Orabug: 27333764] {CVE-2017-5754}
 - x86/mm: Add the 'nopcid' boot option to turn off PCID (Andy Lutomirski) [Orabug: 27333764] {CVE-2017-5754}
 - x86/mm: Disable PCID on 32-bit kernels (Andy Lutomirski) [Orabug: 27333764] {CVE-2017-5754}
 - x86/mm: Remove the UP asm/tlbflush.h code, always use the (formerly) SMP code (Andy Lutomirski) [Orabug: 27333764] {CVE-2017-5754}
 - x86/mm: Fix flush_tlb_page() on Xen (Andy Lutomirski) [Orabug: 27333764] {CVE-2017-5754}
 - x86/mm: Disable preemption during CR3 read+write (Sebastian Andrzej Siewior) [Orabug: 27333764] {CVE-2017-5754}
 - sched/core: Idle_task_exit() shouldn't use switch_mm_irqs_off() (Andy Lutomirski) [Orabug: 27333764] {CVE-2017-5754}
 - x86/mm, sched/core: Turn off IRQs in switch_mm() (Andy Lutomirski) [Orabug: 27333764] {CVE-2017-5754}
 - x86/mm, sched/core: Uninline switch_mm() (Andy Lutomirski) [Orabug: 27333764] {CVE-2017-5754}
 - x86/mm: Build arch/x86/mm/tlb.c even on !SMP (Andy Lutomirski) [Orabug: 27333764] {CVE-2017-5754}
 - sched/core: Add switch_mm_irqs_off() and use it in the scheduler (Andy Lutomirski) [Orabug: 27333764] {CVE-2017-5754}
 - mm/mmu_context, sched/core: Fix mmu_context.h assumption (Ingo Molnar) [Orabug: 27333764] {CVE-2017-5754}
 - x86/mm: If INVPCID is available, use it to flush global mappings (Andy Lutomirski) [Orabug: 27333764] {CVE-2017-5754}
 - x86/mm: Add a 'noinvpcid' boot option to turn off INVPCID (Andy Lutomirski) [Orabug: 27333764] {CVE-2017-5754}
 - x86/mm: Fix INVPCID asm constraint (Borislav Petkov) [Orabug: 27333764] {CVE-2017-5754}
 - x86/mm: Add INVPCID helpers (Andy Lutomirski) [Orabug: 27333764] {CVE-2017-5754}
 - x86: Clean up cr4 manipulation (Andy Lutomirski) [Orabug: 27333764] {CVE-2017-5754}
 - x86/paravirt: Dont patch flush_tlb_single (Thomas Gleixner) [Orabug: 27333764] {CVE-2017-5754}

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-2018-4022.html

Plugin Details

Severity: Medium

ID: 106468

File Name: oraclelinux_ELSA-2018-4022.nasl

Version: 1.17

Type: local

Agent: unix

Published: 1/30/2018

Updated: 10/22/2024

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

Risk Information

VPR

Risk Factor: High

Score: 8.4

CVSS v2

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 4.1

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

CVSS Score Source: CVE-2017-5754

CVSS v3

Risk Factor: Medium

Base Score: 5.6

Temporal Score: 5.4

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:H/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:oracle:linux:dtrace-modules-3.8.13-118.20.2.el6uek, p-cpe:/a:oracle:linux:dtrace-modules-3.8.13-118.20.2.el7uek, 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:kernel-uek-doc, 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 Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/29/2018

Vulnerability Publication Date: 1/3/2018

Reference Information

CVE: CVE-2017-5715, CVE-2017-5753, CVE-2017-5754

IAVA: 2017-A-0345-S, 2017-A-0347-S, 2018-A-0017-S, 2018-A-0019, 2018-A-0020, 2018-A-0022-S, 2018-A-0032-S, 2018-A-0034-S, 2018-A-0123-S