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Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-5163-1)

medium Nessus Plugin ID 155749

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Synopsis

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

Description

The remote Ubuntu 18.04 LTS / 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5163-1 advisory.

 - A vulnerability was found in the Linux kernel in versions prior to v5.14-rc1. Missing size validations on inbound SCTP packets may allow the kernel to read uninitialized memory. (CVE-2021-3655)

 - hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel through 5.13.4 calls unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free.
 (CVE-2021-37159)

 - 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)

 - A memory leak flaw was found in the Linux kernel's ccp_run_aes_gcm_cmd() function that allows an attacker to cause a denial of service. The vulnerability is similar to the older CVE-2019-18808. The highest threat from this vulnerability is to system availability. (CVE-2021-3764)

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-5163-1

Plugin Details

Severity: Medium

ID: 155749

File Name: ubuntu_USN-5163-1.nasl

Version: 1.7

Type: local

Agent: unix

Published: 12/1/2021

Updated: 1/9/2024

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: Medium

Base Score: 4.4

Temporal Score: 3.4

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

CVSS Score Source: CVE-2021-37159

CVSS v3

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5.8

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1008-ibm, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1022-bluefield, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1027-gkeop, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1047-raspi, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1050-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1056-gke, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1058-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1058-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1060-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1064-azure, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-91-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-91-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-91-lowlatency

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: 11/30/2021

Vulnerability Publication Date: 7/21/2021

Reference Information

CVE: CVE-2021-3655, CVE-2021-37159, CVE-2021-3744, CVE-2021-3764

USN: 5163-1