Bug 971503 (CVE-2013-2211) - CVE-2013-2211 xen: libxl allows guest write access to sensitive console related xenstore keys
Summary: CVE-2013-2211 xen: libxl allows guest write access to sensitive console relat...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2013-2211
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: 976779
Blocks: 971508
TreeView+ depends on / blocked
 
Reported: 2013-06-06 16:35 UTC by Petr Matousek
Modified: 2023-05-11 23:07 UTC (History)
5 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2013-06-21 13:04:50 UTC
Embargoed:

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Description Petr Matousek 2013-06-06 16:35:21 UTC 
The libxenlight (libxl) toolstack library does not correctly set permissions on xenstore keys relating to paravirtualised and emulated serial console devices. This could allow a malicious guest administrator to change values in xenstore which the host later relies on being implicitly trusted.

Acknowledgements:

Red Hat would like to thank the Xen project for reporting this issue.
Comment 2 Petr Matousek 2013-06-06 16:39:49 UTC 
Statement:

Not vulnerable.

This issue does not affect the versions of the xen package as shipped with Red Hat Enterprise Linux 5 as it does not provide support for the libxl toolstack.

This issue does not affect Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG.
Comment 3 Petr Matousek 2013-06-21 12:42:25 UTC 
Now public via:

http://seclists.org/oss-sec/2013/q2/608
Comment 4 Petr Matousek 2013-06-21 12:43:07 UTC 
Created xen tracking bugs for this issue

Affects: fedora-all [bug 976779]
Comment 5 Petr Matousek 2013-06-26 07:29:33 UTC 
CVE id has been assigned:

  http://seclists.org/oss-sec/2013/q2/612
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