Detections
Analytics
EulerOS 2.0 SP9 : polkit (EulerOS-SA-2022-1420)
high Nessus Plugin ID 159781
Synopsis
The remote EulerOS host is missing a security update.Description
According to the versions of the polkit packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :- A local privilege escalation vulnerability was found on polkit's pkexec utility. The pkexec application is a setuid tool designed to allow unprivileged users to run commands as privileged users according predefined policies. The current version of pkexec doesn't handle the calling parameters count correctly and ends trying to execute environment variables as commands. An attacker can leverage this by crafting environment variables in such a way it'll induce pkexec to execute arbitrary code. When successfully executed the attack can cause a local privilege escalation given unprivileged users administrative rights on the target machine. (CVE-2021-4034)
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 polkit packages.See Also
Plugin Details
Severity: High
ID: 159781
File Name: EulerOS_SA-2022-1420.nasl
Version: 1.7
Type: local
Family: Huawei Local Security Checks
Published: 4/18/2022
Updated: 1/13/2023
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Critical
Score: 9.8
CVSS v2
Risk Factor: High
Base Score: 7.2
Temporal Score: 6.3
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2021-4034
CVSS v3
Risk Factor: High
Base Score: 7.8
Temporal Score: 7.5
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:huawei:euleros:polkit, p-cpe:/a:huawei:euleros:polkit-debuginfo, p-cpe:/a:huawei:euleros:polkit-debugsource, p-cpe:/a:huawei:euleros:polkit-devel, p-cpe:/a:huawei:euleros:polkit-help, p-cpe:/a:huawei:euleros:polkit-libs, cpe:/o:huawei:euleros:2.0
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/EulerOS/release, Host/EulerOS/rpm-list, Host/EulerOS/sp
Excluded KB Items: Host/EulerOS/uvp_version
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 4/18/2022
Vulnerability Publication Date: 1/25/2022
CISA Known Exploited Vulnerability Due Dates: 7/18/2022
Exploitable With
CANVAS (CANVAS)
Core Impact
Metasploit (Local Privilege Escalation in polkits pkexec)
Reference Information
CVE: CVE-2021-4034
IAVA: 2022-A-0055