Delegated OCSP responder certificates failure with id-pkix-ocsp-nocheck extension

Related Vulnerabilities: CVE-2014-8642  

Mozilla Foundation Security Advisory 2015-08

Delegated OCSP responder certificates failure with id-pkix-ocsp-nocheck extension

Announced
January 13, 2015
Reporter
Brian Smith
Impact
Low
Products
Firefox, SeaMonkey
Fixed in
  • Firefox 35
  • SeaMonkey 2.32

Description

Brian Smith reported that delegated Online Certificate Status Protocol (OCSP) responder certificates fail to recognize the id-pkix-ocsp-nocheck extension. If this extension is present in a delegated OCSP response signing certificate, it will be discarded if it is signed by such a certificate. This could result in a user connecting to a site with a revoked certificate.

References