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Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-4907-1)

high Nessus Plugin ID 148493

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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-4907-1 advisory.

 Wen Xu discovered that the xfs file system implementation in the Linux kernel did not properly validate the number of extents in an inode. An attacker could use this to construct a malicious xfs image that, when mounted, could cause a denial of service (system crash). (CVE-2018-13095)

 It was discovered that the priority inheritance futex implementation in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-3347)

 It was discovered that the network block device (nbd) driver in the Linux kernel contained a use-after- free vulnerability during device setup. A local attacker with access to the nbd device could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-3348)

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-4907-1

Plugin Details

Severity: High

ID: 148493

File Name: ubuntu_USN-4907-1.nasl

Version: 1.6

Type: local

Agent: unix

Published: 4/14/2021

Updated: 8/27/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

CVSS Score Source: CVE-2021-3347

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/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-4.15.0-1112-azure, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1083-raspi2, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1089-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-141-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1097-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-141-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1100-snapdragon, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-141-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1016-dell300x, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1069-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1098-aws

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: 4/13/2021

Vulnerability Publication Date: 6/3/2018

Reference Information

CVE: CVE-2018-13095, CVE-2021-3347, CVE-2021-3348

USN: 4907-1