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.
Key facts
- CVSS score
- 5.9 (v3.1)
- Severity
- MEDIUM
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N- Weakness (CWE)
- CWE-295
- EPSS score
- 5.7% (93th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2009-2404)
- Published
- July 30, 2009
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2009-2404 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- canonical / ubuntu linux
- canonical / ubuntu linux
- canonical / ubuntu linux
- debian / debian linux
- mozilla / firefox
- mozilla / network security services
- mozilla / seamonkey
- mozilla / thunderbird
- opensuse / opensuse
- suse / linux enterprise
- suse / linux enterprise
- suse / linux enterprise server
Certified products that may be affected
2 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.
- SUSE Linux Enterprise Server Version 9 with Service Pack 2, ProPack 4 for Service Pack 2 and certification-sles-sgi-eal3 package - SUSE Linux Products Gmbh - Common Criteria BSI-DSZ-CC-0292-2005 - archived
- SuSE Linux Enterprise Server Version 9 with certification-sles-ibm-eal4 package - SUSE Linux Products Gmbh - Common Criteria BSI-DSZ-CC-0256-2005 - archived
References
- http://isc.sans.org/diary.html?storyid=7003(Broken Link)
- http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html(Mailing List)
- http://marc.info/?l=oss-security&m=125198917018936&w=2(Mailing List)
- http://osvdb.org/56723(Broken Link)
- http://secunia.com/advisories/36088(Broken Link, Vendor Advisory)
- http://secunia.com/advisories/36125(Broken Link, Vendor Advisory)
- http://secunia.com/advisories/36139(Broken Link, Vendor Advisory)
- http://secunia.com/advisories/36157(Broken Link, Vendor Advisory)
- http://secunia.com/advisories/36434(Broken Link, Vendor Advisory)
- http://secunia.com/advisories/36669(Broken Link)
- http://secunia.com/advisories/37098(Broken Link)
- http://sunsolve.sun.com/search/document.do?assetkey=1-77-1021030.1-1(Broken Link)
- http://www.debian.org/security/2009/dsa-1874(Mailing List)
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:197(Broken Link)
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:216(Broken Link)
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:217(Broken Link)
- http://www.mozilla.org/security/announce/2009/mfsa2009-42.html(Vendor Advisory)
- http://www.novell.com/linux/security/advisories/2009_48_firefox.html(Broken Link)
- http://www.openldap.org/devel/cvsweb.cgi/libraries/libldap/tls_m.c.diff?r1=1.8&r2=1.11&f=h(Broken Link)
- http://www.redhat.com/support/errata/RHSA-2009-1207.html(Broken Link)
- http://www.redhat.com/support/errata/RHSA-2009-1432.html(Broken Link)
- http://www.securitytracker.com/id?1022632(Broken Link, Third Party Advisory, VDB Entry)
- http://www.ubuntu.com/usn/usn-810-1(Third Party Advisory)
- http://www.vupen.com/english/advisories/2009/2085(Broken Link, Vendor Advisory)
- http://www.vupen.com/english/advisories/2009/3184(Broken Link)
- http://www.wired.com/threatlevel/2009/07/kaminsky/(Press/Media Coverage)
- https://bugzilla.redhat.com/show_bug.cgi?id=510251(Issue Tracking)
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10751(Broken Link)
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8458(Broken Link)
- https://usn.ubuntu.com/810-2/(Broken Link)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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