Vulnerability in Proftpd
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.
Vulnerability class: POODLE (CVE-2014-3566)
Published · last modified .
CVSS v2 metric
CVSS v2 base score 5.8 (Medium). Vector: AV:N/AC:M/Au:N/C:N/I:P/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.057 (92.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 92.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.057 · newest: 0.057 · change: 0.000
Affected products
- Proftpd — versions 1.3.1, 1.3.2, 1.3.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- marc.info/ (mailing-list)
- www.redhat.com/archives/fedora-package-announce/2009-November/msg00649.html (vendor-advisory)
- secunia.com/advisories/37219 (third-party-advisory)
- www.redhat.com/archives/fedora-package-announce/2009-November/msg00642.html (vendor-advisory)
- www.debian.org/security/2009/dsa-1925 (vendor-advisory)
- bugs.proftpd.org/show_bug.cgi
- marc.info/ (mailing-list)
- www.securityfocus.com/bid/36804 (Patch, vdb-entry)
- exchange.xforce.ibmcloud.com/vulnerabilities/53936 (vdb-entry)
- secunia.com/advisories/37131 (Vendor Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2009-3639?
- CVE-2009-3639 is a vulnerability in Proftpd, classified under Cryptographic Issues. Published 2009-10-28.
- Is CVE-2009-3639 known to be exploited?
- 13 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.