Bug 1009598 (CVE-2013-4355) - CVE-2013-4355 Kernel: Xen: Xsa-63: information leak via I/O instruction emulation
Summary: CVE-2013-4355 Kernel: Xen: Xsa-63: information leak via I/O instruction emula...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2013-4355
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1009602 1009603 1013748
Blocks: 1009007
TreeView+ depends on / blocked
 
Reported: 2013-09-18 16:42 UTC by Prasad J Pandit
Modified: 2019-09-29 13:08 UTC (History)
15 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-03-23 08:55:37 UTC


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Links
System ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2013:1790 normal SHIPPED_LIVE Moderate: kernel security and bug fix update 2013-12-05 22:27:55 UTC

Description Prasad J Pandit 2013-09-18 16:42:34 UTC
Insufficient or missing error handling in certain routines dealing
with guest memory reads can lead to uninitialized data on the
hypervisor stack (potentially containing sensitive data from prior
work the hypervisor performed) being copied to guest visible storage.

This allows a malicious HVM guest to craft certain operations (namely,
but not limited to, port or memory mapped I/O writes) involving
physical or virtual addresses that have no actual memory associated
with them, so that hypervisor stack contents are copied into the
destination of the operation, thus becoming visible to the guest.

A malicious HVM guest could use this flaw to read data relating to other
guests.

Acknowledgements:

Red Hat would like to thank the Xen project for reporting this issue.

Comment 1 Prasad J Pandit 2013-09-18 16:47:22 UTC
Statement:

This issue does affect the version of the kernel-xen package as shipped with Red Hat Enterprise Linux 5.

This issue does not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG as we did not have support for Xen hypervisor.

Comment 6 Vincent Danen 2013-09-30 17:04:27 UTC
This is now public:

http://www.openwall.com/lists/oss-security/2013/09/30/1

Comment 7 Vincent Danen 2013-09-30 17:12:29 UTC
Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1013748]

Comment 8 Fedora Update System 2013-10-13 19:48:20 UTC
xen-4.3.0-7.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 9 Fedora Update System 2013-10-14 07:00:15 UTC
xen-4.2.3-3.fc18 has been pushed to the Fedora 18 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 10 Fedora Update System 2013-10-14 07:01:31 UTC
xen-4.2.3-3.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 11 Fedora Update System 2013-10-14 17:11:18 UTC
xen-4.2.3-3.fc18 has been pushed to the Fedora 18 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 12 Fedora Update System 2013-10-14 17:19:53 UTC
xen-4.2.3-3.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 13 errata-xmlrpc 2013-12-05 17:29:49 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2013:1790 https://rhn.redhat.com/errata/RHSA-2013-1790.html


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