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CVE-2009-2408

5.9 · MEDIUM

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 th…

Published Jul 30, 2009mozillaCWE-295EPSS 5.74%

Overview

CVE-2009-2408 is a medium-severity vulnerability affecting mozilla firefox. It was published on July 30, 2009 and has a CVSS 3.1 base score of 5.9 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories and patches from mozilla. Update firefox to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
mozillafirefox>= 0, < 3.0.13Affected
mozillanetwork_security_services>= 0, < 3.12.3Affected
mozillaseamonkey>= 0, < 1.1.18Affected
mozillathunderbird>= 0, < 2.0.0.23Affected
opensuseopensuse10.3Affected

References

Refisc.sans.org/diary.html?storyid=7003Reflists.opensuse.org/opensuse-security-announce/2009-11/msg00004.htmlRefmarc.info/?l=oss-security&m=125198917018936&w=2Refosvdb.org/56723Refsecunia.com/advisories/36088Refsecunia.com/advisories/36125Refsecunia.com/advisories/36139Refsecunia.com/advisories/36157Refsecunia.com/advisories/36434Refsecunia.com/advisories/36669

How CyberStrike helps

Frequently asked questions

What is CVE-2009-2408?

CVE-2009-2408 is a medium-severity vulnerability affecting mozilla firefox. It was published on July 30, 2009 and has a CVSS 3.1 base score of 5.9 (MEDIUM).

How severe is CVE-2009-2408?

This vulnerability has a CVSS 3.1 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2009-2408?

Check the references section for vendor advisories and patches from mozilla. Update firefox to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2009-2408?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2009-2408 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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