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Bug 1510015 - (CVE-2017-15114) CVE-2017-15114 rhosp-director: Passwordless access for non-libvirt related services when using shared certificate authority
CVE-2017-15114 rhosp-director: Passwordless access for non-libvirt related se...
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
high Severity high
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Assigned To: Red Hat Product Security
impact=important,public=20171106,repo...
: Security
Depends On: 1510216
Blocks: 1510020
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Reported: 2017-11-06 09:43 EST by Adam Mariš
Modified: 2017-12-07 05:26 EST (History)
27 users (show)

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When libvirtd is configured by OSP director (tripleo-heat-templates) to use TLS transport, it defaults to the same certificate authority as all non-libvirtd services. As no additional authentication is configured, this allows these services to connect to libvirtd (which is equivalent to root access). If a vulnerability exists in another service it could, combined with this flaw, be exploited to escalate privileges to gain control over compute nodes.
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Last Closed: 2017-12-07 00:12:00 EST
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RHEL 7.3 requirements from Atomic Host:
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Description Adam Mariš 2017-11-06 09:43:28 EST 
It was found that if OSP-D is configured with TLS authentication for libvirtd and is using the same certificate authority for non-libvirt related services as well, these services are able to connect to libvirtd as root without any password.
Comment 1 Adam Mariš 2017-11-06 09:43:32 EST 
Acknowledgments:

Name: Daniel P. Berrange (Red Hat)
Comment 7 Joshua Padman 2017-11-14 05:36:04 EST 
Removed embargo as the patches were made public upstream.
https://review.openstack.org/#/c/519015/
Comment 11 Joshua Padman 2017-12-07 00:13:14 EST 
External References:

https://bugs.launchpad.net/tripleo/+bug/1730370
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