Description
make_ftp_cmd in main.c in ProFTPD before 1.3.8a has a one-byte out-of-bounds read, and daemon crash, because of mishandling of quote/backslash semantics.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | proftpd-dfsg | 1.3.8.a+dfsg-1 | — |
| Debian 13 | proftpd-dfsg | 1.3.8.a+dfsg-1 | — |
| Debian 12 | proftpd-dfsg | 1.3.8+dfsg-4+deb12u3 | — |
| Debian 11 | proftpd-dfsg | 1.3.7a+dfsg-12+deb11u3 | DLA-3975-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | proftpd-dfsg | 1.3.8.b+dfsg-1ubuntu0.1 | USN-7297-1 |
| Ubuntu 22.04 LTS | proftpd-dfsg | 1.3.7c+dfsg-1ubuntu0.1 | USN-7297-1 |
| Ubuntu 20.04 LTS | proftpd-dfsg | 1.3.6c-2ubuntu0.1 | USN-7297-1 |
| Ubuntu 18.04 LTS | proftpd-dfsg | No fix yet | — |
| Ubuntu 16.04 LTS | proftpd-dfsg | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 SP5 | proftpd | 1.3.8b-bp155.2.6.1 | openSUSE-SU-2024:0008-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | proftpd | 1.3.8b-2.1 | openSUSE-SU-2024:13554-1 |
| openSUSE Leap 15.5 | proftpd | 1.3.8b-bp155.2.6.1 | openSUSE-SU-2024:0008-1 |
Automated scanner template
A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.
- ProFTPD < 1.3.8a - DoS via Out-of-Bounds Read network/cves/2023/CVE-2023-51713.yaml
Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.
Advisories 6
- USN-7297-1 ProFTPD vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DLA-3975-1 proftpd-dfsg - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:13554-1 proftpd-1.3.8b-2.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:0008-1 Security update for proftpd SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2023-3203 Pro-FTPd: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Feb 25, 2025
- WID-SEC-2024-1248 Xerox FreeFlow Print Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 21, 2024