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Bug 985428

Summary: p11-kit: potential interpretation conflict in PEM/DER decoding
Product: Red Hat Enterprise Linux 7 Reporter: Florian Weimer <fweimer>
Component: p11-kitAssignee: Daiki Ueno <dueno>
Status: CLOSED ERRATA QA Contact: Alicja Kario <hkario>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 7.1CC: dueno, hkario, nmavrogi, stefw
Target Milestone: pre-dev-freeze   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: p11-kit-0.23.5-1.el7 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2017-08-01 16:52:09 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:    
Bug Blocks: 983512    

Description Florian Weimer 2013-07-17 13:13:38 UTC 
It seems that the code first tries to parse a certificate as PEM, discarding everything before the "-----BEGIN" marker.  If it's possible to create a DER-encoded certificate that doesn't have a NUL character before the marker, then p11-kit might interpret that certificate differently from the rest of the world.  DER parsing seems more restrictive, so it might make sense to try it first.
Comment 2 Stef Walter 2013-07-17 16:51:39 UTC 
Makes sense, although may lower the loading performance.

Still, this requires the administrator manually add contrived certificates. So moving this to future work, rather than making changes in the stable branch.

Hope that's okay.
Comment 5 Stef Walter 2014-08-07 07:33:45 UTC 
This needs work in Fedora before updating it in RHEL, bumping to RHEL 7.2
Comment 6 Daiki Ueno 2016-09-27 09:51:14 UTC 
A patch and test case are attached to the upstream bug.
Comment 7 Stef Walter 2016-10-03 13:20:30 UTC 
Reviewed upstream.
Comment 11 errata-xmlrpc 2017-08-01 16:52:09 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHEA-2017:1981