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,…
Does this matter?
Lower severity and a low EPSS score (5.70%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 2.0
- 5.8 MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:P
- EPSS
- 5.70% probability · 93th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-310
- Affected
- proftpd/proftpd
- Source
- secalert@redhat.com
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/37131Vendor Advisory
- 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/36804Patch
- https://bugzilla.redhat.com/show_bug.cgi?id=530719Patch
- 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
- 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/37131Vendor Advisory
- 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/36804Patch
- https://bugzilla.redhat.com/show_bug.cgi?id=530719Patch
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.