Bug 1417264
Summary: | OpenSSH will negotiate MD5 HMAC in default configuration [RFE] provide safe default | ||
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Product: | Red Hat Enterprise Linux 6 | Reporter: | Leonard den Ottolander <leonard-rh-bugzilla> |
Component: | openssh | Assignee: | Jakub Jelen <jjelen> |
Status: | CLOSED DUPLICATE | QA Contact: | BaseOS QE Security Team <qe-baseos-security> |
Severity: | unspecified | Docs Contact: | |
Priority: | unspecified | ||
Version: | 6.8 | CC: | ajb, jjelen, phil, qe-baseos-security |
Target Milestone: | rc | Keywords: | FutureFeature |
Target Release: | --- | ||
Hardware: | Unspecified | ||
OS: | Unspecified | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | If docs needed, set a value | |
Doc Text: | Story Points: | --- | |
Clone Of: | 1417263 | Environment: | |
Last Closed: | 2017-02-01 15:09:21 UTC | Type: | Bug |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: | |||
Bug Depends On: | 1373835, 1417263 | ||
Bug Blocks: |
Description
Leonard den Ottolander
2017-01-27 17:47:00 UTC
> MD5 has been considered insecure for quite some time now. That is true for cryptographic signature usage, but not for HMACs (integrity checks usage). Thank you for your input, but this is already handled in the bug #1373836, which will be out soon. Let me know if there is something more you would like to achieve or I can close the bug as a duplicate. Even if HMACs are not quite as susceptible it's just plain stupid to keep known broken primitives around as defaults. As you are well aware attacks in crypto only ever get better, so over time things that were barely acceptable might very well become totally unsafe. NIST never even standardized MD5 as a HMAC for use in TLS, supposedly because of it utter brokenness. 10 years have gone by, and is quite possible that attacks that seemed infeasible 10 years ago are now quite possible seeing that state financed adversaries have budgets of billions of dollars per year. But I agree this is a dup of #1373836 so I'll hook on to that report. *** This bug has been marked as a duplicate of bug 1373836 *** |