Resource exhaustion in BearFTP - CVE-2020-8416
Published: February 4, 2020 / Updated: June 17, 2021
Vulnerability identifier: #VU24919
CSH Severity: Medium
CVSS v4.0: 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:P/U:Green
CVE-ID: CVE-2020-8416
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: IKTeam
Affected software:
BearFTP
BearFTP
Detailed vulnerability description
The 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.
How to mitigate CVE-2020-8416
Install updates from vendor's website.
Sources
- http://packetstormsecurity.com/files/156170/BearFTP-0.1.0-Denial-Of-Service.html
- https://github.com/kolya5544/BearFTP/blob/0.2.0/CHANGELOG.txt
- https://github.com/kolya5544/BearFTP/commit/9965337f9d4c0325e4aab324dcd485e4cbb7b428
- https://github.com/kolya5544/BearFTP/releases/tag/0.2.0
- https://pastebin.com/wqNWnCuN