SilverStripe 2.3.x before 2.3.10 and 2.4.x before 2.4.4 uses weak entropy when generating tokens for (1) the CSRF protection mechanism, (2) autologin, (3) "forgot password" functionality, and (4) password salts, which makes it easier for remote attackers to bypass intended access restrictions via unspecified vectors.
http://www.openwall.com/lists/oss-security/2012/05/01/3
http://www.openwall.com/lists/oss-security/2012/04/30/3
http://www.openwall.com/lists/oss-security/2012/04/30/1
http://www.openwall.com/lists/oss-security/2011/01/03/12
http://open.silverstripe.org/changeset/114505
http://open.silverstripe.org/changeset/114504
http://open.silverstripe.org/changeset/114503
http://open.silverstripe.org/changeset/114498
http://open.silverstripe.org/changeset/114497
http://doc.silverstripe.org/framework/en/trunk/changelogs//2.4.4
http://doc.silverstripe.org/framework/en/trunk/changelogs//2.3.10