CVE-2009-3639 Information

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.

Reference

http://bugs.proftpd.org/show_bug.cgi?id=3275 http://marc.info/?l=oss-security&m=125630966510672&w=2 http://marc.info/?l=oss-security&m=125632960508211&w=2 http://secunia.com/advisories/37131 http://secunia.com/advisories/37219 http://www.debian.org/security/2009/dsa-1925 http://www.mandriva.com/security/advisories?name=MDVSA-2009:288 http://www.securityfocus.com/bid/36804 https://bugzilla.redhat.com/show_bug.cgi?id=530719 https://exchange.xforce.ibmcloud.com/vulnerabilities/53936 https://www.redhat.com/archives/fedora-package-announce/2009-November/msg00642.html https://www.redhat.com/archives/fedora-package-announce/2009-November/msg00649.html