Multiple vulnerabilities in uftpd daemon

Published: 2020-07-01

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	N/A
CWE-ID	CWE-20 CWE-401
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	uftpd Server applications / File servers (FTP/HTTP)
Vendor	Joachim Nilsson

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU29443

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to socket leak in daemon "accept()" handling causing "Too many open files". A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

uftpd: 0.1 - 2.12

External links

http://github.com/troglobit/uftpd/releases/tag/v2.13

Q & A

Can this vulnerability be exploited remotely?

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

2) Memory leak

EUVDB-ID: #VU29444