EulerOS Virtualization 2.10.1 : util-linux (EulerOS-SA-2022-2069)

medium Nessus Plugin ID 163219

Synopsis

The remote EulerOS Virtualization host is missing multiple security updates.

Description

According to the versions of the util-linux package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

- A flaw was found in the util-linux chfn and chsh utilities when compiled with Readline support. The Readline library uses an 'INPUTRC' environment variable to get a path to the library config file. When the library cannot parse the specified file, it prints an error message containing data from the file. This flaw allows an unprivileged user to read root-owned files, potentially leading to privilege escalation.
This flaw affects util-linux versions prior to 2.37.4. (CVE-2022-0563)

- A logical error was found in util-linux's libmount library in a function that allows unprivileged users to unmount FUSE filesystems. Incorrect uid checking allows unprivileged users to unmount FUSE filesystems with similar uid users, an attacker could exploit this vulnerability to cause a denial of (CVE-2021-3995)

- that allows unprivileged users to unmount FUSE filesystems. Issues related to parsing the /proc/self/mountinfo file allow unprivileged users to unmount other users' filesystems that are themselves world-writable (such as /tmp) or mounted in a world-writable directory. An attacker could exploit this (CVE-2021-3996)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected util-linux packages.

See Also

http://www.nessus.org/u?cf922d33

Plugin Details

Severity: Medium

ID: 163219

File Name: EulerOS_SA-2022-2069.nasl

Version: 1.3

Type: local

Published: 7/15/2022

Updated: 10/17/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Low

Base Score: 1.9

Temporal Score: 1.5

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

CVSS Score Source: CVE-2022-0563

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 5

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

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

Vulnerability Information

CPE: p-cpe:/a:huawei:euleros:util-linux, cpe:/o:huawei:euleros:uvp:2.10.1

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/EulerOS/release, Host/EulerOS/rpm-list, Host/EulerOS/uvp_version

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/14/2022

Vulnerability Publication Date: 2/21/2022

Reference Information

CVE: CVE-2021-3995, CVE-2021-3996, CVE-2022-0563