SUSE update for sudo

Published: 2023-01-20 | Updated: 2024-02-27

Risk	Low
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2023-22809
CWE-ID	CWE-20
Exploitation vector	Local
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software Subscribe	SUSE Linux Enterprise Server for SAP Operating systems & Components / Operating system SUSE Linux Enterprise Server Operating systems & Components / Operating system SUSE Linux Enterprise Realtime Extension Operating systems & Components / Operating system SUSE Linux Enterprise High Performance Computing Operating systems & Components / Operating system openSUSE Leap Micro Operating systems & Components / Operating system SUSE Enterprise Storage Operating systems & Components / Operating system SUSE Manager Retail Branch Server Operating systems & Components / Operating system SUSE Linux Enterprise Micro Operating systems & Components / Operating system SUSE Manager Server Operating systems & Components / Operating system SUSE Manager Proxy Operating systems & Components / Operating system sudo-plugin-python-debuginfo Operating systems & Components / Operating system package or component sudo-plugin-python Operating systems & Components / Operating system package or component sudo-devel Operating systems & Components / Operating system package or component sudo-debugsource Operating systems & Components / Operating system package or component sudo-debuginfo Operating systems & Components / Operating system package or component sudo Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Input validation error

EUVDB-ID: #VU71332

Risk: Low

CVSSv3.1: 7.2 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C]

CVE-ID: CVE-2023-22809

CWE-ID: CWE-20 - Improper input validation

Exploit availability: Yes

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists within the sudoedit (aka -e) feature due to insufficient validation of user-supplied input passed in the user-provided environment variables (SUDO_EDITOR, VISUAL, and EDITOR). The problem exists because a user-specified editor may contain a "--" argument that defeats a protection mechanism, e.g., an EDITOR='vim -- /path/to/extra/file' value. A local user can append arbitrary entries to the list of files to process and escalate privileges on the system.

Mitigation

Update the affected package sudo to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server for SAP: 15-SP3

SUSE Linux Enterprise Server: 15-SP3-LTSS

SUSE Linux Enterprise Realtime Extension: 15-SP3

SUSE Linux Enterprise High Performance Computing: 15-SP3-ESPOS - 15-SP3-LTSS

openSUSE Leap Micro: 5.2

SUSE Enterprise Storage: 7.1

SUSE Manager Retail Branch Server: 4.2

SUSE Linux Enterprise Micro: 5.1 - 5.2

SUSE Manager Server: 4.2

SUSE Manager Proxy: 4.2

sudo-plugin-python-debuginfo: before 1.9.5p2-150300.3.19.1

sudo-plugin-python: before 1.9.5p2-150300.3.19.1

sudo-devel: before 1.9.5p2-150300.3.19.1

sudo-debugsource: before 1.9.5p2-150300.3.19.1

sudo-debuginfo: before 1.9.5p2-150300.3.19.1

sudo: before 1.9.5p2-150300.3.19.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20230115-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.