Full Disclosure mailing list archives
Re: Recent claims that windows update is broken
From: Georgi Guninski <guninski () guninski com>
Date: Sat, 10 Sep 2011 10:05:37 +0300
On Fri, Sep 09, 2011 at 03:09:25PM -0700, Dan Kaminsky wrote:
On Thu, Sep 8, 2011 at 2:55 AM, Georgi Guninski <guninski () guninski com>wrote:http://www.theregister.co.uk/2011/09/07/diginotar_hacker_proof/ "I'm able to issue windows update," he [Comodohacker] wrote. "Microsoft's statement about Windows Update and that I can't issue such update is totally false!" The original Comodohacker statement is at: http://pastebin.com/85WV10EL Is this true?For the record, no. Windows Update doesn't just depend on WinVerifyTrust, it also calls CertVerifyCertificateChainPolicy with the CERT_CHAIN_POLICY_MICROSOFT_ROOT flag, documented here: http://msdn.microsoft.com/en-us/library/aa377163(v=vs.85).aspx
By your logic there would be no exploits just because the documentation writes so. I bothered to ask mainly for these reasons: 1. It is unclear to me what collection of private keys/certs Comodohacker has 2. From thereg article:
Microsoft declined to comment.
-- georgi _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
Current thread:
- Recent claims that windows update is broken Georgi Guninski (Sep 08)
- Re: Recent claims that windows update is broken Thor (Hammer of God) (Sep 08)
- Re: Recent claims that windows update is broken Dan Kaminsky (Sep 09)
- Re: Recent claims that windows update is broken Thor (Hammer of God) (Sep 09)
- Re: Recent claims that windows update is broken 夜神 岩男 (Sep 09)
- Re: Recent claims that windows update is broken Georgi Guninski (Sep 10)
- Re: Recent claims that windows update is broken Dan Kaminsky (Sep 10)
- Re: Recent claims that windows update is broken Thor (Hammer of God) (Sep 09)