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Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS / 22.04 LTS / 23.04 : snapd vulnerability (USN-6125-1)

critical Nessus Plugin ID 176501

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS / 22.04 LTS / 23.04 host has packages installed that are affected by a vulnerability as referenced in the USN-6125-1 advisory.

 It was discovered that the snap sandbox did not restrict the use of the ioctl system call with a TIOCLINUX request. This could be exploited by a malicious snap to inject commands into the controlling terminal which would then be executed outside of the snap sandbox once the snap had exited. This could allow an attacker to execute arbitrary commands outside of the confined snap sandbox. Note: graphical terminal emulators like xterm, gnome-terminal and others are not affected - this can only be exploited when snaps are run on a virtual console.

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 packages.

See Also

https://ubuntu.com/security/notices/USN-6125-1

Plugin Details

Severity: Critical

ID: 176501

File Name: ubuntu_USN-6125-1.nasl

Version: 1.7

Type: local

Agent: unix

Published: 5/31/2023

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: High

Score: 7.3

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

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

CVSS Score Source: CVE-2023-1523

CVSS v3

Risk Factor: Critical

Base Score: 10

Temporal Score: 9

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/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:23.04, p-cpe:/a:canonical:ubuntu_linux:ubuntu-snappy-cli, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:snap-confine, p-cpe:/a:canonical:ubuntu_linux:golang-github-ubuntu-core-snappy-dev, p-cpe:/a:canonical:ubuntu_linux:golang-github-snapcore-snapd-dev, p-cpe:/a:canonical:ubuntu_linux:ubuntu-snappy, p-cpe:/a:canonical:ubuntu_linux:ubuntu-core-snapd-units, cpe:/o:canonical:ubuntu_linux:16.04:-:esm, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:ubuntu-core-launcher, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:snapd-xdg-open, p-cpe:/a:canonical:ubuntu_linux:snapd

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: 5/31/2023

Vulnerability Publication Date: 5/31/2023

Reference Information

CVE: CVE-2023-1523

USN: 6125-1