Vulnerability in Mozilla Firefox
CVE-2009-2408
Mozilla Network Security Services (NSS) before 3.12.3, Firefox before 3.0.13, Thunderbird before 2.0.0.23, and SeaMonkey before 1.1.18 do not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority. NOTE: this was originally reported for Firefox before 3.5.
Vulnerability class: Improper Certificate Validation
EPSS: 0.057 (92.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Mozilla Firefox
- Mozilla Network_security_services
- Mozilla Seamonkey
- Mozilla Thunderbird
- Canonical Ubuntu_linux — versions 8.04, 8.10, 9.04
- Debian Debian_linux — versions 5.0
- Opensuse
- Suse Linux_enterprise — versions 10.0, 11.0
- Suse Linux_enterprise_server — versions 9
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (x_refsource_SECUNIA, Broken Link, Vendor Advisory, third-party-advisory)
- secalert@redhat.com (x_refsource_SECUNIA, Broken Link, Vendor Advisory, third-party-advisory)
- secalert@redhat.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK, Broken Link)
- secalert@redhat.com (vendor-advisory, x_refsource_MANDRIVA, Broken Link)
- secalert@redhat.com (vendor-advisory, Broken Link, x_refsource_SUSE)
- secalert@redhat.com (vendor-advisory, x_refsource_MANDRIVA, Broken Link)
- secalert@redhat.com (vendor-advisory, Mailing List, x_refsource_SUSE)
- secalert@redhat.com (x_refsource_SECUNIA, Broken Link, Vendor Advisory, third-party-advisory)
- secalert@redhat.com (x_refsource_SECUNIA, Broken Link, Vendor Advisory, third-party-advisory)
- secalert@redhat.com (x_refsource_MISC, Broken Link)
Frequently asked questions
- What is CVE-2009-2408?
- CVE-2009-2408 is a medium-severity vulnerability in Mozilla Firefox, classified under Improper Certificate Validation. CVSS score: 5.9/10. Published 2009-07-30.
- How severe is CVE-2009-2408?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2009-2408 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.