Vulnerability identifier: #VU29443

Vulnerability 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

Exploitation vector: Network

Exploit availability: No

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

Vendor: Joachim Nilsson

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

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CPE

• cpe:2.3:a:joachim_nilsson:uftpd:2.12:*:*:*:*:*:*:*
• cpe:2.3:a:joachim_nilsson:uftpd:2.11:*:*:*:*:*:*:*
• cpe:2.3:a:joachim_nilsson:uftpd:2.10:*:*:*:*:*:*:*
• cpe:2.3:a:joachim_nilsson:uftpd:2.9:*:*:*:*:*:*:*
• cpe:2.3:a:joachim_nilsson:uftpd:2.8:*:*:*:*:*:*:*
• cpe:2.3:a:joachim_nilsson:uftpd:2.7:*:*:*:*:*:*:*
• cpe:2.3:a:joachim_nilsson:uftpd:2.6:*:*:*:*:*:*:*
• cpe:2.3:a:joachim_nilsson:uftpd:2.5:*:*:*:*:*:*:*
• cpe:2.3:a:joachim_nilsson:uftpd:2.4:*:*:*:*:*:*:*
• cpe:2.3:a:joachim_nilsson:uftpd:2.3:*:*:*:*:*:*:*
• cpe:2.3:a:joachim_nilsson:uftpd:2.2:*:*:*:*:*:*:*
• cpe:2.3:a:joachim_nilsson:uftpd:2.1:*:*:*:*:*:*:*
• cpe:2.3:a:joachim_nilsson:uftpd:2.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:joachim_nilsson:uftpd:2.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:joachim_nilsson:uftpd:2.0:*:*:*:*:*:*:*
• cpe:2.3:a:joachim_nilsson:uftpd:1.9.1:*:*:*:*:*:*:*
• cpe:2.3:a:joachim_nilsson:uftpd:1.9:*:*:*:*:*:*:*
• cpe:2.3:a:joachim_nilsson:uftpd:1.8:*:*:*:*:*:*:*
• cpe:2.3:a:joachim_nilsson:uftpd:1.7:*:*:*:*:*:*:*
• cpe:2.3:a:joachim_nilsson:uftpd:1.6:*:*:*:*:*:*:*
• cpe:2.3:a:joachim_nilsson:uftpd:1.5:*:*:*:*:*:*:*
• cpe:2.3:a:joachim_nilsson:uftpd:1.4:*:*:*:*:*:*:*
• cpe:2.3:a:joachim_nilsson:uftpd:1.3:*:*:*:*:*:*:*
• cpe:2.3:a:joachim_nilsson:uftpd:1.2:*:*:*:*:*:*:*
• cpe:2.3:a:joachim_nilsson:uftpd:1.1:*:*:*:*:*:*:*
• cpe:2.3:a:joachim_nilsson:uftpd:1.0:*:*:*:*:*:*:*
• cpe:2.3:a:joachim_nilsson:uftpd:0.1:*:*:*:*:*:*:*

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

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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?

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