CVE-2009-2408

Mozilla Firefox anterior a v3.5 y NSS anterior a v3.12.3 no tratan apropiadamente un carácter '\0' en un nombre de dominio en el campo nombre común (CN) del asunto de un certificado X.509, que permite a un atacante de hombre-en-el-medio suplantar servidores SSL arbitrarios a través de un certificado manipulado por una autoridad de certificación.

Security researcher Juan Pablo Lopez Yacubian reported that an attacker could call window.open() on an invalid URL which looks similar to a legitimate URL and then use document.write() to place content within the new document, appearing to have come from the spoofed location. Moxie Marlinspike reported a heap overflow vulnerability in the code that handles regular expressions in certificate names. This vulnerability could be used to compromise the browser and run arbitrary code by presenting a specially crafted certificate to the client. IOActive security researcher Dan Kaminsky reported a mismatch in the treatment of domain names in SSL certificates between SSL clients and the Certificate Authorities (CA) which issue server certificates. These certificates could be used to intercept and potentially alter encrypted communication between the client and a server such as sensitive bank account transactions. This update provides the latest Mozilla Firefox 3.0.x to correct these issues. Additionally, some packages which require so, have been rebuilt and are being provided as updates.