Bug 1058395 (CVE-2014-1666) - CVE-2014-1666 xen: PHYSDEVOP_{prepare,release}_msix exposed to unprivileged guests
Summary: CVE-2014-1666 xen: PHYSDEVOP_{prepare,release}_msix exposed to unprivileged g...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2014-1666
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1058398
Blocks: 1058399
TreeView+ depends on / blocked
 
Reported: 2014-01-27 17:30 UTC by Petr Matousek
Modified: 2021-02-17 06:56 UTC (History)
18 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2014-01-27 17:32:01 UTC


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Description Petr Matousek 2014-01-27 17:30:46 UTC
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 17:32:01 UTC
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 17:32:39 UTC
Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1058398]


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