Vulnerability identifier: #VU84847

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-51713

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ProFTPD
Server applications / File servers (FTP/HTTP)

Vendor: ProFTPD

Description

The vulnerability allows a remote user to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition within the make_ftp_cmd() function in main.c. A remote user can pass a specially crafted command to the server, trigger an out-of-bounds read error and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

ProFTPD: 1.2.0 - 1.3.8 rc4

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External links
http://github.com/proftpd/proftpd/issues/1683
http://github.com/proftpd/proftpd/issues/1683#issuecomment-1712887554
http://github.com/proftpd/proftpd/blob/1.3.8/NEWS

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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