Denial of service in BearFTP
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-8416 |
| CWE-ID | CWE-400 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| Vulnerable software Subscribe |
BearFTP Server applications / File servers (FTP/HTTP) |
| Vendor | IKTeam |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Resource exhaustion
EUVDB-ID: #VU24919
Risk: Medium
CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2020-8416
CWE-ID:
CWE-400 - Resource exhaustion
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation when processing a large volume of connections to the PASV mode port. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's website.
Vulnerable software versionsBearFTP: 0.0.1 - 0.1.0
External linkshttp://packetstormsecurity.com/files/156170/BearFTP-0.1.0-Denial-Of-Service.html
http://github.com/kolya5544/BearFTP/blob/0.2.0/CHANGELOG.txt
http://github.com/kolya5544/BearFTP/commit/9965337f9d4c0325e4aab324dcd485e4cbb7b428
http://github.com/kolya5544/BearFTP/releases/tag/0.2.0
http://pastebin.com/wqNWnCuN
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. However, proof of concept for this vulnerability is available.
