CVE-2023-45198

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-10-05 · updated 2026-06-17

Description

ftpd before "NetBSD-ftpd 20230930" can leak information about the host filesystem before authentication via an MLSD or MLST command. tnftpd (the portable version of NetBSD ftpd) before 20231001 is also vulnerable.

Affected products

NetBSD Ftpd: before 2023-09-30 — fixed in 2023-09-30
NetBSD Tnftpd: before 2023-10-01 — fixed in 2023-10-01

How to fix

Upgrade to a fixed version: NetBSD Ftpd 2023-09-30; NetBSD Tnftpd 2023-10-01. Check the vendor advisory for mitigations.

References

http://cvsweb.netbsd.org/bsdweb.cgi/src/libexec/ftpd/ftpcmd.y.diff?r1=1.94&r2=1.95
https://mail-index.netbsd.org/source-changes/2023/09/22/msg147669.html
http://cvsweb.netbsd.org/bsdweb.cgi/src/libexec/ftpd/ftpcmd.y.diff?r1=1.94&r2=1.95
https://mail-index.netbsd.org/source-changes/2023/09/22/msg147669.html

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