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Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-4076-1)

high Nessus Plugin ID 127097

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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-4076-1 advisory.

 It was discovered that a race condition existed in the Serial Attached SCSI (SAS) implementation in the Linux kernel. A local attacker could possibly use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2018-20836)

 It was discovered that the ext4 file system implementation in the Linux kernel did not properly zero out memory in some situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2019-11833)

 It was discovered that the Bluetooth Human Interface Device Protocol (HIDP) implementation in the Linux kernel did not properly verify strings were NULL terminated in certain situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2019-11884)

 It was discovered that the Linux kernel on ARM processors allowed a tracing process to modify a syscall after a seccomp decision had been made on that syscall. A local attacker could possibly use this to bypass seccomp restrictions. (CVE-2019-2054)

 Hugues Anguelkov discovered that the Broadcom Wifi driver in the Linux kernel did not properly prevent remote firmware events from being processed for USB Wifi devices. A physically proximate attacker could use this to send firmware events to the device. (CVE-2019-9503)

 It was discovered that an integer overflow existed in the Freescale (PowerPC) hypervisor manager in the Linux kernel. A local attacker with write access to /dev/fsl-hv could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-10142)

Tenable has extracted the preceding description block directly from the Ubuntu 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 kernel package.

See Also

https://ubuntu.com/security/notices/USN-4076-1

Plugin Details

Severity: High

ID: 127097

File Name: ubuntu_USN-4076-1.nasl

Version: 1.10

Type: local

Agent: unix

Published: 7/26/2019

Updated: 8/27/2024

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

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 6.9

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

CVSS Score Source: CVE-2018-20836

CVSS v3

Risk Factor: High

Base Score: 8.3

Temporal Score: 7.2

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

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

CVSS Score Source: CVE-2019-9503

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-157-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1088-aws, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-157-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-157-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1117-raspi2, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-157-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-157-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-157-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-157-powerpc64-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1052-kvm

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/25/2019

Vulnerability Publication Date: 5/7/2019

Reference Information

CVE: CVE-2018-20836, CVE-2019-10142, CVE-2019-11833, CVE-2019-11884, CVE-2019-2054, CVE-2019-9503

USN: 4076-1