mailing list archives
Re: Security team successfully cracks SSL using 200 PS3's and MD5
From: Valdis.Kletnieks () vt edu
Date: Sun, 04 Jan 2009 17:52:10 -0500
On Sun, 04 Jan 2009 15:58:34 CST, Joe Greco said:
Technically the only thing necessary to prevent
this attack has already been done, and that is to stop issuing certs
signed with MD5 so that no one else can create a rogue CA via this
Are we certain that existing certs cannot be subverted?
The attack depends on being able to to jigger up *two* certs that have the
same MD5 hash. Therefor, attacking an existing cert would require either:
1) That the existing cert be one of a pair (in other words, somebody else
already knew about the current attack and also did it).
2) Somebody has found a way to cause a collision to a specified MD5 hash (which
is still impractical, AFAIK).
If anybody has a subvertible cert, it's pretty safe to guess that they *know*
they have such a cert, because they themselves *built* the cert that way.
Re: Security team successfully cracks SSL using 200 PS3's and MD5 flaw. Joe Abley (Jan 02)
Re: Security team successfully cracks SSL using 200 PS3's and MD5 flaw. William Warren (Jan 02)