High severity · published Feb 12, 2020
CVE-2020-8815
Improper connection handling in the base connection handler in IKTeam BearFTP before v0.3.1 allows a remote attacker to achieve denial of service via a Slowloris approach by…
7.5
CVSS
2.2%
EPSS
No
On KEV
Description
Improper connection handling in the base connection handler in IKTeam BearFTP before v0.3.1 allows a remote attacker to achieve denial of service via a Slowloris approach by sending a large volume of small packets.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.2% · higher than 82% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BE
Bearftp · Iktm
before 0.3.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-8815
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-8815
Third Party Advisory
https://github.com/kolya5544/BearFTP
Exploit
https://github.com/kolya5544/BearFTP/blob/f5a8047587c1a96456d4f291c12b038b9ab0d0c5/BearFTP/Program.cs#L503-L525
Patch
https://github.com/kolya5544/BearFTP/commit/17a6ead72d4a25cbfcef5e27613aa0a5f88a4b26
Patch
https://github.com/kolya5544/BearFTP/commit/66dc9d95e58bca133f265457d32007cdf38b66ad
Release Notes
https://github.com/kolya5544/BearFTP/releases/tag/0.4.0
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IKTeam BearFTP before 0.2.0 allows remote attackers to achieve denial of service via a large volume of connections to the PASV mode port