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Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-4414-1)

high Nessus Plugin ID 138139

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Synopsis

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

Description

The remote Ubuntu 16.04 LTS / 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4414-1 advisory.

 It was discovered that the network block device (nbd) implementation in the Linux kernel did not properly check for error conditions in some situations. An attacker could possibly use this to cause a denial of service (system crash). (CVE-2019-16089)

 It was discovered that the btrfs file system implementation in the Linux kernel did not properly validate file system metadata in some situations. An attacker could use this to construct a malicious btrfs image that, when mounted, could cause a denial of service (system crash). (CVE-2019-19036, CVE-2019-19318, CVE-2019-19813, CVE-2019-19816)

 It was discovered that the btrfs implementation in the Linux kernel did not properly detect that a block was marked dirty in some situations. An attacker could use this to specially craft a file system image that, when unmounted, could cause a denial of service (system crash). (CVE-2019-19377)

 It was discovered that the kernel->user space relay implementation in the Linux kernel did not properly check return values in some situations. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2019-19462)

 Matthew Sheets discovered that the SELinux network label handling implementation in the Linux kernel could be coerced into de-referencing a NULL pointer. A remote attacker could use this to cause a denial of service (system crash). (CVE-2020-10711)

 It was discovered that the SCSI generic (sg) driver in the Linux kernel did not properly handle certain error conditions correctly. A local privileged attacker could use this to cause a denial of service (system crash). (CVE-2020-12770)

 It was discovered that the USB Gadget device driver in the Linux kernel did not validate arguments passed from configfs in some situations. A local attacker could possibly use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2020-13143)

 It was discovered that the efi subsystem in the Linux kernel did not handle memory allocation failures during early boot in some situations. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2019-12380)

 It was discovered that the btrfs file system in the Linux kernel in some error conditions could report register information to the dmesg buffer. A local attacker could possibly use this to expose sensitive information. (CVE-2019-19039)

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-4414-1

Plugin Details

Severity: High

ID: 138139

File Name: ubuntu_USN-4414-1.nasl

Version: 1.9

Type: local

Agent: unix

Published: 7/6/2020

Updated: 8/27/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 7.3

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

CVSS Score Source: CVE-2019-19816

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-109-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1091-oem, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-107-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-109-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-109-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1064-gke, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1065-raspi2, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1077-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1074-aws, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1091-azure, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1069-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1078-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1048-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1081-snapdragon, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1046-oracle, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-107-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-107-generic

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: 7/6/2020

Vulnerability Publication Date: 5/28/2019

Reference Information

CVE: CVE-2019-12380, CVE-2019-16089, CVE-2019-19036, CVE-2019-19039, CVE-2019-19318, CVE-2019-19377, CVE-2019-19462, CVE-2019-19813, CVE-2019-19816, CVE-2020-10711, CVE-2020-12770, CVE-2020-13143

USN: 4414-1