#VU25652 Resource management error in Pure-FTPd - CVE-2004-0656

Vulnerability identifier: #VU25652

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2004-0656

CWE-ID: CWE-399

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Pure-FTPd
Server applications / File servers (FTP/HTTP)

Vendor: PureFTPd.org

Description

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

The vulnerability exists due to incorrect implementation of limits for number of concurrent connections in accept_client() function. A remote attacker can exceed the maximum number of connections and perform a denial of service attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Pure-FTPd: 1.0 - 1.0.18

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External links
https://www.gentoo.org/security/en/glsa/glsa-200407-04.xml
https://www.pureftpd.org/
https://exchange.xforce.ibmcloud.com/vulnerabilities/16611

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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.