The mod_tls module in ProFTPD before 1.3.2b, and 1.3.3 before 1.3.3rc2, when the…
Priority LOW 35CWE-310Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- —
- Confidentiality · integrity · availability
- None · Partial · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
The mod_tls module in ProFTPD before 1.3.2b, and 1.3.3 before 1.3.3rc2, when the dNSNameRequired TLS option is enabled, does not properly handle a '\0' character in a domain name in the Subject Alternative Name field of an X.509 client certificate, which allows remote attackers to bypass intended client-hostname restrictions via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.
Why it matters now
EPSS 0.057 93rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:proftpd:proftpd:*:a:*:*:*:*:*:* | up to 1.3.2 | Vulnerable | ProFTPD |
| cpe:2.3:a:proftpd:proftpd:1.3.1:*:*:*:*:*:*:* | 1.3.1 | Vulnerable | ProFTPD |
| cpe:2.3:a:proftpd:proftpd:1.3.2:*:*:*:*:*:*:* | 1.3.2 | Vulnerable | ProFTPD |
| cpe:2.3:a:proftpd:proftpd:1.3.2:rc1:*:*:*:*:*:* | 1.3.2 rc1 | Vulnerable | ProFTPD |
| cpe:2.3:a:proftpd:proftpd:1.3.2:rc2:*:*:*:*:*:* | 1.3.2 rc2 | Vulnerable | ProFTPD |
| cpe:2.3:a:proftpd:proftpd:1.3.2:rc4:*:*:*:*:*:* | 1.3.2 rc4 | Vulnerable | ProFTPD |
| cpe:2.3:a:proftpd:proftpd:1.3.3:rc1:*:*:*:*:*:* | 1.3.3 rc1 | Vulnerable | ProFTPD |
- cpe:2.3:a:proftpd:proftpd:*:a:*:*:*:*:*:* Versions up to 1.3.2 Vulnerable ·ProFTPD
- cpe:2.3:a:proftpd:proftpd:1.3.1:*:*:*:*:*:*:* Versions 1.3.1 Vulnerable ·ProFTPD
- cpe:2.3:a:proftpd:proftpd:1.3.2:*:*:*:*:*:*:* Versions 1.3.2 Vulnerable ·ProFTPD
- cpe:2.3:a:proftpd:proftpd:1.3.2:rc1:*:*:*:*:*:* Versions 1.3.2 rc1 Vulnerable ·ProFTPD
- cpe:2.3:a:proftpd:proftpd:1.3.2:rc2:*:*:*:*:*:* Versions 1.3.2 rc2 Vulnerable ·ProFTPD
- cpe:2.3:a:proftpd:proftpd:1.3.2:rc4:*:*:*:*:*:* Versions 1.3.2 rc4 Vulnerable ·ProFTPD
- cpe:2.3:a:proftpd:proftpd:1.3.3:rc1:*:*:*:*:*:* Versions 1.3.3 rc1 Vulnerable ·ProFTPD
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2009-3639
- 2026-10-03 Alias added: GHSA-4vq9-9g4j-pgg4
References
More Proftpd vulnerabilities
- TI-2015-02923 Access control flaw in ProFTPD mod_copy allows arbitrary file access KEVCVSS 3.1CRITICAL 10.0
- TI-2010-03974 Multiple stack-based buffer overflows in the pr_netio_telnet_gets function in netio.c in… CVSS 2.0HIGH 10.0
- TI-2010-05061 ProFTPD 1.3.3c Backdoor Command Execution CVSS 4.0CRITICAL 9.3
- TI-2019-09597 An arbitrary file copy vulnerability in mod_copy in ProFTPD up to 1.3.5b allows for… CVSS 3.1CRITICAL 9.8
- TI-2026-30493 SQL injection in ProFTPD CVSS 3.1HIGH 8.1
- TI-2023-26623 The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6… CVSS 3.1MEDIUM 5.9
Sources
- CVE-2009-3639 · CVE Program
- CVE-2009-3639 · NVD
- FIRST EPSS
- GHSA-4vq9-9g4j-pgg4 · GitHub Advisory Database · CC BY 4.0
- CVE-2009-3639 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences