CVE-2009-3639

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.

Score

CVSS 2.0 5.8 Medium

Status

Modified - secalert@redhat.com

Published

2009-10-28

Last modified

2024-08-07

Weaknesses

CWE-310

Affected products

• Proftpd (Proftpd)

References

• 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