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Ubuntu 18.04 LTS : Linux kernel vulnerabilities (USN-4093-1)

critical Nessus Plugin ID 127888

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Synopsis

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

Description

The remote Ubuntu 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4093-1 advisory.

 It was discovered that a heap buffer overflow existed in the Marvell Wireless LAN device driver for the Linux kernel. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-10126)

 Andrei Vlad Lutas and Dan Lutas discovered that some x86 processors incorrectly handle SWAPGS instructions during speculative execution. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2019-1125)

 It was discovered that the PowerPC dlpar implementation in the Linux kernel did not properly check for allocation errors in some situations. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2019-12614)

 It was discovered that a NULL pointer dereference vulnerability existed in the Near-field communication (NFC) implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2019-12984)

 Jann Horn discovered a use-after-free vulnerability in the Linux kernel when accessing LDT entries in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-13233)

 Jann Horn discovered that the ptrace implementation in the Linux kernel did not properly record credentials in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly gain administrative privileges. (CVE-2019-13272)

 It was discovered that the Marvell Wireless LAN device driver in the Linux kernel did not properly validate the BSS descriptor. A local attacker could possibly use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-3846)

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-4093-1

Plugin Details

Severity: Critical

ID: 127888

File Name: ubuntu_USN-4093-1.nasl

Version: 1.14

Type: local

Agent: unix

Published: 8/14/2019

Updated: 8/28/2024

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

Risk Information

VPR

Risk Factor: Critical

Score: 9.7

CVSS v2

Risk Factor: High

Base Score: 8.3

Temporal Score: 7.2

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

CVSS Score Source: CVE-2019-3846

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.4

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

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

CVSS Score Source: CVE-2019-10126

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-5.0.0-25-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.0.0-25-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.0.0-25-lowlatency, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.0.0-1014-azure

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: 8/13/2019

Vulnerability Publication Date: 6/3/2019

CISA Known Exploited Vulnerability Due Dates: 6/10/2022

Exploitable With

Core Impact

Metasploit (Linux Polkit pkexec helper PTRACE_TRACEME local root exploit)

Reference Information

CVE: CVE-2019-10126, CVE-2019-1125, CVE-2019-12614, CVE-2019-12984, CVE-2019-13233, CVE-2019-13272, CVE-2019-3846

USN: 4093-1