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EulerOS Virtualization 2.9.1 : rpm (EulerOS-SA-2023-1202)

medium Nessus Plugin ID 169845

Synopsis

The remote EulerOS Virtualization host is missing multiple security updates.

Description

According to the versions of the rpm packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

 - A race condition vulnerability was found in rpm. A local unprivileged user could use this flaw to bypass the checks that were introduced in response to CVE-2017-7500 and CVE-2017-7501, potentially gaining root privileges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2021-35937)

 - A symbolic link issue was found in rpm. It occurs when rpm sets the desired permissions and credentials after installing a file. A local unprivileged user could use this flaw to exchange the original file with a symbolic link to a security-critical file and escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
 (CVE-2021-35938)

 - It was found that the fix for CVE-2017-7500 and CVE-2017-7501 was incomplete: the check was only implemented for the parent directory of the file to be created. A local unprivileged user who owns another ancestor directory could potentially use this flaw to gain root privileges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2021-35939)

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 rpm packages.

See Also

http://www.nessus.org/u?d428eec9

Plugin Details

Severity: Medium

ID: 169845

File Name: EulerOS_SA-2023-1202.nasl

Version: 1.1

Type: local

Published: 1/11/2023

Updated: 9/8/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.1

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

CVSS Score Source: CVE-2021-35939

CVSS v3

Risk Factor: Medium

Base Score: 6.7

Temporal Score: 6

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

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

Vulnerability Information

CPE: p-cpe:/a:huawei:euleros:python3-rpm, p-cpe:/a:huawei:euleros:rpm, p-cpe:/a:huawei:euleros:rpm-libs, p-cpe:/a:huawei:euleros:rpm-plugin-systemd-inhibit, cpe:/o:huawei:euleros:uvp:2.9.1

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: 1/10/2023

Vulnerability Publication Date: 8/25/2022

Reference Information

CVE: CVE-2021-35937, CVE-2021-35938, CVE-2021-35939