CVE-2017-15270

Severity: medium (CVSS 5.3 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 7.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2017-11-15 · updated 2026-06-17
Weakness: CWE-20

Description

The PSFTPd 10.0.4 Build 729 server does not properly escape data before writing it into a Comma Separated Values (CSV) file. This can be used by attackers to hide data in the Graphical User Interface (GUI) view and create arbitrary entries to a certain extent. Special characters such as '"' and ',' and '\r' are not escaped and can be used to add new entries to the log.

Affected products

Psftpd: 10.0.4

References

http://packetstormsecurity.com/files/144972/PSFTPd-Windows-FTP-Server-10.0.4-Build-729-Use-After-Free-Log-Injection.html
http://www.securityfocus.com/archive/1/541518/100/0/threaded
https://www.exploit-db.com/exploits/43144/
https://www.x41-dsec.de/lab/advisories/x41-2017-006-psftpd/
http://packetstormsecurity.com/files/144972/PSFTPd-Windows-FTP-Server-10.0.4-Build-729-Use-After-Free-Log-Injection.html
http://www.securityfocus.com/archive/1/541518/100/0/threaded
https://www.exploit-db.com/exploits/43144/
https://www.x41-dsec.de/lab/advisories/x41-2017-006-psftpd/

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