CVE-2009-3475: INTERNET2 Shibboleth-SP

High severity, CVSS 7.5. EPSS: 0.9% chance of exploitation in the next 30 days.

Internet2 Shibboleth Service Provider software 1.3.x before 1.3.3 and 2.x before 2.2.1, when using PKIX trust validation, does not properly handle a '\0' character in the subject or subjectAltName fields of a certificate, which allows remote man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

Affected products

• INTERNET2 Shibboleth-SP: version 1.3.1 only; version 1.3.2 only; version 1.3f only; version 2.0 only; version 2.1 only; version 2.2 only

Published 2009-09-29. Last modified 2026-06-16.