Ubuntu 20.04 LTS : Linux kernel (OEM 5.14) vulnerabilities (USN-5140-1)

high Nessus Plugin ID 155232

Synopsis

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

Description

The remote Ubuntu 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5140-1 advisory.

- A memory leak flaw was found in the Linux kernel in the ccp_run_aes_gcm_cmd() function in drivers/crypto/ccp/ccp-ops.c, which allows attackers to cause a denial of service (memory consumption).
This vulnerability is similar with the older CVE-2019-18808. (CVE-2021-3744)

- prealloc_elems_and_freelist in kernel/bpf/stackmap.c in the Linux kernel before 5.14.12 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write. (CVE-2021-41864)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-5140-1

Plugin Details

Severity: High

ID: 155232

File Name: ubuntu_USN-5140-1.nasl

Version: 1.8

Type: local

Agent: unix

Published: 11/11/2021

Updated: 8/25/2022

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

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: E:U/RL:OF/RC:C

CVSS Score Source: CVE-2021-41864

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-buildinfo-5.14.0-1007-oem, p-cpe:/a:canonical:ubuntu_linux:linux-headers-5.14.0-1007-oem, p-cpe:/a:canonical:ubuntu_linux:linux-headers-oem-20.04d, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.14.0-1007-oem, p-cpe:/a:canonical:ubuntu_linux:linux-image-oem-20.04d, p-cpe:/a:canonical:ubuntu_linux:linux-image-unsigned-5.14.0-1007-oem, p-cpe:/a:canonical:ubuntu_linux:linux-modules-5.14.0-1007-oem, p-cpe:/a:canonical:ubuntu_linux:linux-oem-20.04d, p-cpe:/a:canonical:ubuntu_linux:linux-oem-5.14-headers-5.14.0-1007, p-cpe:/a:canonical:ubuntu_linux:linux-oem-5.14-tools-5.14.0-1007, p-cpe:/a:canonical:ubuntu_linux:linux-oem-5.14-tools-host, p-cpe:/a:canonical:ubuntu_linux:linux-tools-5.14.0-1007-oem, p-cpe:/a:canonical:ubuntu_linux:linux-tools-oem-20.04d

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/11/2021

Vulnerability Publication Date: 10/8/2021

Reference Information

CVE: CVE-2021-3744, CVE-2021-3764, CVE-2021-41864

USN: 5140-1