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OracleVM 3.3 : Unbreakable / etc (OVMSA-2018-0016) (Meltdown) (Spectre)

medium Nessus Plugin ID 106524

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Synopsis

The remote OracleVM host is missing one or more security updates.

Description

The remote OracleVM system is missing necessary patches to address critical security updates :

 - 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, boot: Carve out early cmdline parsing function (Borislav Petkov) [Orabug: 27376697] - 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: Don't patch flush_tlb_single (Thomas Gleixner) [Orabug: 27333764] (CVE-2017-5754)

 - x86/ldt: Make modify_ldt synchronous (Andy Lutomirski) [Orabug: 27333764] (CVE-2017-5754) (CVE-2015-5157)

Solution

Update the affected kernel-uek / kernel-uek-firmware packages.

See Also

http://www.nessus.org/u?fc71259c

Plugin Details

Severity: Medium

ID: 106524

File Name: oraclevm_OVMSA-2018-0016.nasl

Version: 3.7

Type: local

Published: 1/31/2018

Updated: 1/28/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 8.4

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

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:vm:kernel-uek, p-cpe:/a:oracle:vm:kernel-uek-firmware, cpe:/o:oracle:vm_server:3.3

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/30/2018

Vulnerability Publication Date: 8/31/2015

Exploitable With

CANVAS (CANVAS)

Reference Information

CVE: CVE-2015-5157, CVE-2017-5715, CVE-2017-5753, CVE-2017-5754

BID: 76005

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