Multiple vulnerabilities in PaperCut MF/NG

Published: 2023-04-24 | Updated: 2024-05-13

Risk	Critical
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-27350 CVE-2023-27351
CWE-ID	CWE-284 CWE-287
Exploitation vector	Network
Public exploit	Vulnerability #1 is being exploited in the wild. Vulnerability #2 is being exploited in the wild.
Vulnerable software Subscribe	PaperCut NG Other software / Other software solutions PaperCut MF Other software / Other software solutions
Vendor

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Improper access control

EUVDB-ID: #VU75418

Risk: Critical

CVSSv3.1: 9.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2023-27350

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions within the SetupCompleted class. A remote non-authenticated attacker can bypass authentication process and execute arbitrary code with SYSTEM privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

PaperCut NG: before 22.0.9

PaperCut MF: before 22.0.9

External links

http://www.papercut.com/kb/Main/PO-1216-and-PO-1219
http://www.zerodayinitiative.com/advisories/ZDI-23-233/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.

2) Improper Authentication

EUVDB-ID: #VU75419

Risk: Critical

CVSSv3.1: 9.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2023-27351

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No