DEBIAN-CVE-2009-3639

Advisory lineage Upstream: 1 Downstream: 1
Upstream
CVE-2009-3639
Downstream
DSA-1925-1
Published: 28 Oct 2009, 14:30
Last modified:28 Apr 2026, 20:11

Vulnerability Summary

Overall Risk (default)
minimal
0/100
CVSS Score
No data
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

28 Oct 2009, 14:30
Published
Vulnerability first disclosed
28 Apr 2026, 20:11
Last Modified
Vulnerability information updated

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.

Affected Systems

  • debian•proftpd-dfsg

    < 1.3.2a-2 | < 1.3.2a-2 | < 1.3.2a-2 | < 1.3.2a-2

References (1)