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Ubuntu 16.04 ESM / 18.04 ESM / 20.04 LTS : atftp vulnerabilities (USN-6334-1)

medium Nessus Plugin ID 180471

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Synopsis

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

Description

The remote Ubuntu 16.04 ESM / 18.04 ESM / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6334-1 advisory.

 Peter Wang discovered that atftp did not properly manage certain inputs. A remote attacker could send a specially crafted tftp request to the server to cause a crash. (CVE-2020-6097)

 Andreas B. Mundt discovered that atftp did not properly manage certain inputs. A remote attacker could send a specially crafted tftp request to the server to cause a crash. (CVE-2021-41054)

 Johannes Krupp discovered that atftp did not properly manage certain inputs. A remote attacker could send a specially crafted tftp request to the server and make the server to disclose /etc/group data.
 (CVE-2021-46671)

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 atftp and / or atftpd packages.

See Also

https://ubuntu.com/security/notices/USN-6334-1

Plugin Details

Severity: Medium

ID: 180471

File Name: ubuntu_USN-6334-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 9/4/2023

Updated: 8/28/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2021-46671

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.8

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:atftp, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:esm, cpe:/o:canonical:ubuntu_linux:16.04:-:esm, p-cpe:/a:canonical:ubuntu_linux:atftpd

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/4/2023

Vulnerability Publication Date: 9/10/2020

Reference Information

CVE: CVE-2020-6097, CVE-2021-41054, CVE-2021-46671

USN: 6334-1