Bug 1058395 - (CVE-2014-1666) CVE-2014-1666 xen: PHYSDEVOP_{prepare,release}_msix exposed to unprivileged guests
CVE-2014-1666 xen: PHYSDEVOP_{prepare,release}_msix exposed to unprivileged g...
Status: CLOSED NOTABUG
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=20140124,repo...
: Security
Depends On: 1058398
Blocks: 1058399
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Reported: 2014-01-27 12:30 EST by Petr Matousek
Modified: 2015-02-16 10:46 EST (History)
18 users (show)

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Doc Type: Bug Fix
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Last Closed: 2014-01-27 12:32:01 EST
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RHEL 7.3 requirements from Atomic Host:


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Description Petr Matousek 2014-01-27 12:30:46 EST
The PHYSDEVOP_{prepare,release}_msix operations are supposed to be available to privileged guests (domain 0 in non-disaggregated setups) only, but the necessary privilege check was missing.

Malicious or misbehaving unprivileged guests can cause the host or other guests to malfunction. This can result in host-wide denial of service. Privilege escalation, while seeming to be unlikely, cannot be excluded.

References:
http://seclists.org/oss-sec/2014/q1/150

Acknowledgements:

Red Hat would like to thank the Xen project for reporting this issue.
Comment 1 Petr Matousek 2014-01-27 12:32:01 EST
Statement:

Not vulnerable.

This issue did not affect the versions of the kernel-xen package as shipped with Red Hat Enterprise Linux 5.

This issue did not affect Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG 2 as we did not have support for Xen hypervisor.
Comment 2 Petr Matousek 2014-01-27 12:32:39 EST
Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1058398]

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