CVE-2009-3639
Summary
| CVE | CVE-2009-3639 |
|---|---|
| State | PUBLISHED |
| Assigner | redhat |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2009-10-28 14:30:00 UTC |
| Updated | 2026-04-23 00:35:47 UTC |
| Description | 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. |
Risk And Classification
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
MediumAuthentication
NoneConfidentiality
NoneIntegrity
PartialAvailability
PartialAV:N/AC:M/Au:N/C:N/I:P/A:P
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Proftpd | Proftpd | 1.3.1 | All | All | All |
| Application | Proftpd | Proftpd | 1.3.2 | All | All | All |
| Application | Proftpd | Proftpd | 1.3.2 | rc1 | All | All |
| Application | Proftpd | Proftpd | 1.3.2 | rc2 | All | All |
| Application | Proftpd | Proftpd | 1.3.2 | rc4 | All | All |
| Application | Proftpd | Proftpd | 1.3.3 | rc1 | All | All |
| Application | Proftpd | Proftpd | All | a | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| IBM X-Force Exchange | af854a3a-2127-422b-91ae-364da2661108 | exchange.xforce.ibmcloud.com | |
| 'Re: [oss-security] proftpd - mod_tls - Improper SSL/TLS certificate' - MARC | af854a3a-2127-422b-91ae-364da2661108 | marc.info | |
| ProFTPD mod_tls Module NULL Character CA SSL Certificate Validation Security Bypass Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | Patch |
| Bug 3275 – Improper SSL/TLS certificate subjectAltName verification | af854a3a-2127-422b-91ae-364da2661108 | bugs.proftpd.org | |
| Debian -- Security Information -- DSA-1925-1 proftpd-dfsg | af854a3a-2127-422b-91ae-364da2661108 | www.debian.org | |
| '[oss-security] proftpd - mod_tls - Improper SSL/TLS certificate subjectAltName verification' - MARC | af854a3a-2127-422b-91ae-364da2661108 | marc.info | |
| ProFTPD SSL Certificate NULL Character Processing Security Issue - Secunia Advisories - Vulnerability Information - Secunia.com | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| Debian update for proftpd-dfsg - Secunia Advisories - Vulnerability Information - Secunia.com | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | |
| Support / Security / Advisories / / MDVSA-2009:288 | Mandriva | af854a3a-2127-422b-91ae-364da2661108 | www.mandriva.com | |
| [SECURITY] Fedora 11 Update: proftpd-1.3.2b-1.fc11 | af854a3a-2127-422b-91ae-364da2661108 | www.redhat.com | |
| [SECURITY] Fedora 10 Update: proftpd-1.3.2b-1.fc10 | af854a3a-2127-422b-91ae-364da2661108 | www.redhat.com | |
| 530719 – (CVE-2009-3639) CVE-2009-3639 ProFTPD: Doesn't properly handle NULL character in subjectAltName | af854a3a-2127-422b-91ae-364da2661108 | bugzilla.redhat.com | Patch |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.