CVE-2009-3639

Severity

57%

Complexity

86%

Confidentiality

81%

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.

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.

CVSS 2.0 Base Score 5.8. CVSS Attack Vector: network. CVSS Attack Complexity: medium. CVSS Vector: (AV:N/AC:M/Au:N/C:N/I:P/A:P).

Overview

Type

ProFTPD

First reported 15 years ago

2009-10-28 14:30:00

Last updated 7 years ago

2017-08-17 01:31:00

Affected Software

ProFTPD 1.3.1

1.3.1

ProFTPD 1.3.2

1.3.2

ProFTPD 1.3.2 release candidate 1

1.3.2

ProFTPD 1.3.2 release candidate 2

1.3.2

ProFTPD 1.3.2 release candidate 4

1.3.2

ProFTPD 1.3.3 release candidate 1

1.3.3

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