Detections
Analytics
EulerOS Virtualization for ARM 64 3.0.2.0 : sudo (EulerOS-SA-2021-1390)
high Nessus Plugin ID 147471
Synopsis
The remote EulerOS Virtualization for ARM 64 host is missing multiple security updates.Description
According to the versions of the sudo package installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :- selinux_edit_copy_tfiles in sudoedit in Sudo before 1.9.5 allows a local unprivileged user to gain file ownership and escalate privileges by replacing a temporary file with a symlink to an arbitrary file target. This affects SELinux RBAC support in permissive mode. Machines without SELinux are not vulnerable.(CVE-2021-23240)
- A flaw was found in sudo. A heap-based buffer overflow was found in the way sudo parses command line arguments. This flaw is exploitable by any local user who can execute the sudo command (by default, any local user can execute sudo) without authentication.
Successful exploitation of this flaw could lead to privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.(CVE-2021-3156)
- sudo The sudoedit personality of Sudo before 1.9.5 may allow a local unprivileged user to perform arbitrary directory-existence tests by winning a sudo_edit.c race condition in replacing a user-controlled directory by a symlink to an arbitrary path.(CVE-2021-23239)
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 sudo packages.See Also
Plugin Details
Severity: High
ID: 147471
File Name: EulerOS_SA-2021-1390.nasl
Version: 1.6
Type: local
Family: Huawei Local Security Checks
Published: 3/10/2021
Updated: 1/18/2023
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Critical
Score: 9.7
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-2021-3156
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:sudo, cpe:/o:huawei:euleros:uvp:3.0.2.0
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: 3/4/2021
CISA Known Exploited Vulnerability Due Dates: 4/27/2022
Exploitable With
CANVAS (CANVAS)
Core Impact
Metasploit (Sudo Heap-Based Buffer Overflow)