Privilege escalation in ProFTPD



Risk High
Patch available NO
Number of vulnerabilities 1
CVE-ID CVE-2024-48651
CWE-ID CWE-269
Exploitation vector Network
Public exploit N/A
Vulnerable software
 ProFTPD
Server applications / File servers (FTP/HTTP)

Vendor ProFTPD

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Improper privilege management

EUVDB-ID: #VU101665

Risk: High

CVSSv3.1: 8.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N/E:U/RL:U/RC:C]

CVE-ID: CVE-2024-48651

CWE-ID: CWE-269 - Improper Privilege Management

Exploit availability: No

Description

The vulnerability allows a remote user to compromise the affected system.

The vulnerability exists due to improper privilege management when handling users without assigned supplementary groups. If the user has no groups assigned to their account, the server will assume the GID of 0 for this account. As a result, the user will gain access to files and directories owned by the system root user and will be able to modify them at will, leading to privilege escalation and system compromise.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

ProFTPD: 1.2.0 - 1.3.9 rc2

CPE2.3 External links

http://github.com/proftpd/proftpd/commit/cec01cc0a2523453e5da5a486bc6d977c3768db1
http://github.com/proftpd/proftpd/issues/1830


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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