Fedora 37 update for sudo



| Updated: 2024-10-25
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
 Fedora
Operating systems & Components / Operating system

sudo
Operating systems & Components / Operating system package or component

Vendor Fedoraproject

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

Upgrade sudo to version 1.9.12-1.p2.fc37.

Vulnerable software versions

Fedora: 37

sudo: before 1.9.12-1.p2.fc37

CPE2.3 External links

http://bodhi.fedoraproject.org/updates/FEDORA-2023-9078f609e6


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.



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