neon before 0.28.6, when OpenSSL or GnuTLS is used, does 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, a related issue to CVE-2009-2408.

References

• https://nvd.nist.gov/vuln/detail/CVE-2009-2474
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11721
• https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00924.html
• https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00945.html
• http://lists.apple.com/archives/security-announce/2010//Nov/msg00000.html
• http://lists.manyfish.co.uk/pipermail/neon/2009-August/001044.html
• http://lists.manyfish.co.uk/pipermail/neon/2009-August/001046.html
• http://secunia.com/advisories/36371
• http://secunia.com/advisories/36799
• http://support.apple.com/kb/HT4435
• http://www.mandriva.com/security/advisories?name=MDVSA-2009:221
• http://www.securityfocus.com/bid/36079
• http://www.ubuntu.com/usn/usn-835-1
• http://www.vupen.com/english/advisories/2009/2341