MD5 is all but broken, and there are some weaknesses in SHA-1. Could you add support for SHA-2 in the remaining parts of Kerberos, please? I have identified the following areas: * GSS-API v1 contains hard-codes MD5 uses (Incompatible v2 of GSS-API would be necessary for SHA-2) * pkinit contains hard-coded SHA-1 uses * preauth "SAM" hard-codes MD5 (I realize converting them all now might not be practical - but they should be converted eventually.)
A number of these cases are dictated by the current versions of standards. As these are updated to include use of additional digest mechanisms, I expect they'll be implemented.
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As of krb5-1.10.2-7.fc18: > I have identified the following areas: > * GSS-API v1 contains hard-codes MD5 uses > (Incompatible v2 of GSS-API would be necessary for SHA-2) v1 hard-coded MD5 is still there, I think; I haven't checked whether v2 is supported. > * pkinit contains hard-coded SHA-1 uses Still there. > * preauth "SAM" hard-codes MD5 I can't find this code any more.
This bug appears to have been reported against 'rawhide' during the Fedora 19 development cycle. Changing version to '19'. (As we did not run this process for some time, it could affect also pre-Fedora 19 development cycle bugs. We are very sorry. It will help us with cleanup during Fedora 19 End Of Life. Thank you.) More information and reason for this action is here: https://fedoraproject.org/wiki/BugZappers/HouseKeeping/Fedora19
This package has changed ownership in the Fedora Package Database. Reassigning to the new owner of this component.
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As of krb5-1.13-4.fc22.src.rpm: (In reply to Miloslav Trmač from comment #0) > I have identified the following areas: > * GSS-API v1 contains hard-codes MD5 uses > (Incompatible v2 of GSS-API would be necessary for SHA-2) I haven’t looked into this in detail now. > * pkinit contains hard-coded SHA-1 uses > * preauth "SAM" hard-codes MD5 These hard-coded uses seem to no longer be there. A quick grep also finds a huge amount of hard-coded RSA_MD5 uses in various places. Assuming (naively hoping?) they have been there also back in 2009, perhaps I have excluded these cases with a more detailed analysis I don’t have time now. So I’ll leave the autoclosing, or not, of this bug, up to the package maintiner’s more detailed knowledge.
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