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
02 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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 5.70% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 92.8% of scored records. A rank, not a probability.
- NVD base score
- The NVD has published no score for this record
- NVD CVSS vector
- No NVD score to derive
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-16.
- Red Hat severity
- Low. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2009-10-28 14:00Z17 YR AGO
- Last updated
- 2024-08-07 06:38Z2 YR AGO
- Reserved
- 2009-10-09
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- 3a6074f5ffe8f8ae0654f3dbb026355b4f6c764e5835e565f5e2117166d895fe
05 Affected products
06 References
- marc.info[oss-security] 20091023 proftpd - mod_tls - Improper SSL/TLS certificate subjectAltName verificationhttp://marc.info/?l=oss-security&m=125630966510672&w=2
- www.redhat.comFEDORA-2009-11666https://www.redhat.com/archives/fedora-package-announce/2009-November/msg00649.html
- secunia.com37219http://secunia.com/advisories/37219
- www.redhat.comFEDORA-2009-11649https://www.redhat.com/archives/fedora-package-announce/2009-November/msg00642.html
- www.debian.orgDSA-1925http://www.debian.org/security/2009/dsa-1925
- bugs.proftpd.orghttp://bugs.proftpd.org/show_bug.cgi?id=3275
- marc.info[oss-security] 20091023 Re: proftpd - mod_tls - Improper SSL/TLS certificate subjectAltName verificationhttp://marc.info/?l=oss-security&m=125632960508211&w=2
- www.securityfocus.com36804http://www.securityfocus.com/bid/36804
- exchange.xforce.ibmcloud.comproftpd-modtls-security-bypass(53936)https://exchange.xforce.ibmcloud.com/vulnerabilities/53936
- secunia.com37131http://secunia.com/advisories/37131
- www.mandriva.comMDVSA-2009:288http://www.mandriva.com/security/advisories?name=MDVSA-2009:288
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=530719
07 Fixed in
Debian 12
- proftpd-dfsg Fixed in 1.3.2a-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- proftpd-dfsg Fixed in 1.3.2a-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- proftpd-dfsg Fixed in 1.3.2a-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.