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Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-3982-1)

medium Nessus Plugin ID 125143

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Synopsis

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

Description

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3982-1 advisory.

 - Microarchitectural Store Buffer Data Sampling (MSBDS): Store buffers on some microprocessors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access. A list of impacted products can be found here:
 https://www.intel.com/content/dam/www/public/us/en/documents/corporate-information/SA00233-microcode- update-guidance_05132019.pdf (CVE-2018-12126)

 - Microarchitectural Load Port Data Sampling (MLPDS): Load ports on some microprocessors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access. A list of impacted products can be found here:
 https://www.intel.com/content/dam/www/public/us/en/documents/corporate-information/SA00233-microcode- update-guidance_05132019.pdf (CVE-2018-12127)

 - Microarchitectural Fill Buffer Data Sampling (MFBDS): Fill buffers on some microprocessors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access. A list of impacted products can be found here:
 https://www.intel.com/content/dam/www/public/us/en/documents/corporate-information/SA00233-microcode- update-guidance_05132019.pdf (CVE-2018-12130)

 - Microarchitectural Data Sampling Uncacheable Memory (MDSUM): Uncacheable memory on some microprocessors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access. A list of impacted products can be found here:
 https://www.intel.com/content/dam/www/public/us/en/documents/corporate-information/SA00233-microcode- update-guidance_05132019.pdf (CVE-2019-11091)

 - The SCTP socket buffer used by a userspace application is not accounted by the cgroups subsystem. An attacker can use this flaw to cause a denial of service attack. Kernel 3.10.x and 4.18.x branches are believed to be vulnerable. (CVE-2019-3874)

 - A flaw was found in the Linux kernel's vfio interface implementation that permits violation of the user's locked memory limit. If a device is bound to a vfio driver, such as vfio-pci, and the local attacker is administratively granted ownership of the device, it may cause a system memory exhaustion and thus a denial of service (DoS). Versions 3.10, 4.14 and 4.18 are vulnerable. (CVE-2019-3882)

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 kernel package.

See Also

https://ubuntu.com/security/notices/USN-3982-1

Plugin Details

Severity: Medium

ID: 125143

File Name: ubuntu_USN-3982-1.nasl

Version: 1.12

Type: local

Agent: unix

Published: 5/15/2019

Updated: 5/28/2024

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

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 Score Source: CVE-2019-11091

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:canonical:ubuntu_linux:linux-image-4.4.0-148-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-148-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-148-generic-lpae, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1113-snapdragon, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-148-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-148-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-148-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1109-raspi2, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1083-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1046-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-148-powerpc64-smp

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/14/2019

Vulnerability Publication Date: 3/25/2019

Reference Information

CVE: CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, CVE-2019-11091, CVE-2019-3874, CVE-2019-3882

USN: 3982-1