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Ubuntu 16.04 ESM / 18.04 ESM : GNU Screen vulnerability (USN-6198-1)

medium Nessus Plugin ID 177900

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 16.04 ESM / 18.04 ESM host has a package installed that is affected by a vulnerability as referenced in the USN-6198-1 advisory.

 It was discovered that GNU Screen was not properly checking user identifiers before sending certain signals to target processes. If GNU Screen was installed as setuid or setgid, a local attacker could possibly use this issue to cause a denial of service on a target application.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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 screen package.

See Also

https://ubuntu.com/security/notices/USN-6198-1

Plugin Details

Severity: Medium

ID: 177900

File Name: ubuntu_USN-6198-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 7/3/2023

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: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.6

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

CVSS Score Source: CVE-2023-24626

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.9

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:18.04:-:esm, cpe:/o:canonical:ubuntu_linux:16.04:-:esm, p-cpe:/a:canonical:ubuntu_linux:screen

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: 7/3/2023

Vulnerability Publication Date: 4/8/2023

Reference Information

CVE: CVE-2023-24626

USN: 6198-1