Detections
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OracleVM 3.4 : xen (OVMSA-2018-0232) (Spectre)

medium Nessus Plugin ID 110791

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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 :

 - BUILDINFO: OVMF commit=173bf5c847e3ca8b42c11796ce048d8e2e916ff8

 - BUILDINFO: xen commit=b059d1de3b211fe5582c63f64b4822b9f85eafd2

 - BUILDINFO: QEMU upstream commit=8bff6989bd0bafcc0ddf859c23ce6a2ff21a80ff

 - BUILDINFO: QEMU traditional commit=346fdd7edd73f8287d0d0a2bab9c67b71bc6b8ba

 - BUILDINFO: IPXE commit=9a93db3f0947484e30e753bbd61a10b17336e20e

 - BUILDINFO: SeaBIOS commit=7d9cbe613694924921ed1a6f8947d711c5832eee

 - xend: fix memory leak of XendConfig.XendConfig object (Manjunath Patil) [Orabug: 28165871]

 - x86/HVM: Restart ioreq processing state machine (Boris Ostrovsky)

- x86/spec-ctrl: Mitigations for LazyFPU (Andrew Cooper) [Orabug: 28135175] (CVE-2018-3665)

 - x86: Support fully eager FPU context switching (Andrew Cooper) [Orabug: 28135175] (CVE-2018-3665)

 - svm: fix incorrect TSC scaling (Haozhong Zhang) [Orabug:
 27182906]

 - x86/AMD-ucode: correct multiple container handling (Jan Beulich)

- x86, amd_ucode: fix coverity issues found in cpu_request_microcode (Aravind Gopalakrishnan) [Orabug:
 28157269]

 - [xenmicrocode] Fix error reporting on successful return from tool (Ross Philipson) [Orabug: 28128754]

 - x86: correct default_xen_spec_ctrl calculation (Jan Beulich) [Orabug: 28035001]

 - x86/msr: Virtualise MSR_SPEC_CTRL.SSBD for guests to use (Andrew Cooper) [Orabug: 28035001] (CVE-2018-3639)

 - x86/Intel: Mitigations for GPZ SP4 - Speculative Store Bypass (Andrew Cooper) [Orabug: 28035001] (CVE-2018-3639)

 - x86/AMD: Mitigations for GPZ SP4 - Speculative Store Bypass (Andrew Cooper) [Orabug: 28035001] (CVE-2018-3639)

 - x86/spec_ctrl: Introduce a new `spec-ctrl=` command line argument to replace `bti=` (Andrew Cooper) [Orabug:
 28035001] (CVE-2018-3639)

 - x86/cpuid: Improvements to guest policies for speculative sidechannel features (Andrew Cooper) [Orabug: 28035001] (CVE-2018-3639)

 - x86/spec_ctrl: Explicitly set Xen's default MSR_SPEC_CTRL value (Andrew Cooper) [Orabug: 28035001] (CVE-2018-3639)

 - x86/spec_ctrl: Split X86_FEATURE_SC_MSR into PV and HVM variants (Andrew Cooper) [Orabug: 28035001] (CVE-2018-3639)

 - x86/spec_ctrl: Elide MSR_SPEC_CTRL handling in idle context when possible (Andrew Cooper) [Orabug: 28035001] (CVE-2018-3639)

 - x86/spec_ctrl: Rename bits of infrastructure to avoid NATIVE and VMEXIT (Andrew Cooper) [Orabug: 28035001] (CVE-2018-3639)

 - x86/spec_ctrl: Fold the XEN_IBRS_[SET,CLEAR] ALTERNATIVES together (Andrew Cooper) [Orabug: 28035001] (CVE-2018-3639)

 - x86/spec_ctrl: Merge bti_ist_info and use_shadow_spec_ctrl into spec_ctrl_flags (Andrew Cooper) [Orabug: 28035001] (CVE-2018-3639)

 - x86/spec_ctrl: Express Xen's choice of MSR_SPEC_CTRL value as a variable (Andrew Cooper) [Orabug: 28035001] (CVE-2018-3639)

 - x86/spec_ctrl: Read MSR_ARCH_CAPABILITIES only once (Andrew Cooper) [Orabug: 28035001] (CVE-2018-3639)

 - x86/spec_ctrl: Assume that STIBP feature is always available (Boris Ostrovsky) [Orabug: 28035001] (CVE-2018-3639)

 - x86/spec_ctrl: Updates to retpoline-safety decision making (Andrew Cooper) [Orabug: 28035001] (CVE-2018-3639)

 - Revert 'x86/boot: Disable IBRS in intr/nmi exit path at bootup stage' (Boris Ostrovsky) [Orabug: 28035001] (CVE-2018-3639)

Solution

Update the affected xen / xen-tools packages.

See Also

https://oss.oracle.com/pipermail/oraclevm-errata/2018-June/000867.html

Plugin Details

Severity: Medium

ID: 110791

File Name: oraclevm_OVMSA-2018-0232.nasl

Version: 1.7

Type: local

Published: 6/29/2018

Updated: 4/15/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

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 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:vm:xen, p-cpe:/a:oracle:vm:xen-tools, cpe:/o:oracle:vm_server:3.4

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: 6/28/2018

Vulnerability Publication Date: 5/22/2018

Reference Information

CVE: CVE-2018-3639, CVE-2018-3665