Bug 1066382 - (CVE-2013-4542) CVE-2013-4542 qemu: virtio-scsi: buffer overrun on invalid state load
CVE-2013-4542 qemu: virtio-scsi: buffer overrun on invalid state load
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20131203,repor...
: Security
Depends On: 1095739 1095740 1095741 1095742 1096097 1102579 1102580 1110194 1110284 1110288 1133850
Blocks: 1036654 1110626 1133827
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Reported: 2014-02-18 05:11 EST by Petr Matousek
Modified: 2016-04-26 18:05 EDT (History)
45 users (show)

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Doc Type: Bug Fix
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Last Closed: 2014-09-22 07:21:26 EDT
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Description Petr Matousek 2014-02-18 05:11:04 EST
Michael S. Tsirkin writes:
hw/scsi/scsi-bus.c invokes load_request.

 virtio_scsi_load_request does:
    qemu_get_buffer(f, (unsigned char *)&req->elem, sizeof(req->elem));

this probably can make elem invalid, for example, make in_num or out_num
out-of-bounds, later leading to buffer overrun.

An user able to alter the savevm data (either on the disk or over the wire
during migration) could use this flaw to to corrupt QEMU process memory on
the (destination) host, which could potentially result in arbitrary code
execution on the host with the privileges of the QEMU process.

Upstream fix:
-------------
  -> http://git.qemu.org/?p=qemu.git;a=commit;h=3c3ce981423e0d6c18af82ee62f1850c2cda5976
Comment 1 Petr Matousek 2014-02-18 06:28:11 EST
Statement:

This issue does not affect the versions of kvm package as shipped with
Red Hat Enterprise Linux 5.

This issue does affect the versions of qemu-kvm package as shipped with
Red Hat Enterprise Linux 7.
Comment 4 Prasad J Pandit 2014-05-08 09:10:28 EDT
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1095740]
Comment 6 Fedora Update System 2014-05-16 05:59:27 EDT
qemu-1.6.2-5.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 8 errata-xmlrpc 2014-06-09 10:37:07 EDT
This issue has been addressed in following products:

  RHEV-H and Agents for RHEL-6

Via RHSA-2014:0674 https://rhn.redhat.com/errata/RHSA-2014-0674.html
Comment 9 Murray McAllister 2014-06-10 03:42:01 EDT
Acknowledgements:

The issues were discovered as part of the state loading code audit performed by Michael S. Tsirkin of Red Hat, Anthony Liguori and Michael Roth.
Comment 10 errata-xmlrpc 2014-06-10 16:19:04 EDT
This issue has been addressed in following products:

  RHEV-H and Agents for RHEL-6

Via RHSA-2014:0744 https://rhn.redhat.com/errata/RHSA-2014-0744.html
Comment 11 errata-xmlrpc 2014-06-10 16:19:55 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2014:0743 https://rhn.redhat.com/errata/RHSA-2014-0743.html
Comment 15 errata-xmlrpc 2014-07-23 12:16:03 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 7

Via RHSA-2014:0927 https://rhn.redhat.com/errata/RHSA-2014-0927.html
Comment 17 errata-xmlrpc 2014-07-24 11:39:01 EDT
This issue has been addressed in following products:

  OpenStack 4 for RHEL 6
  OpenStack 3 for RHEL 6

Via RHSA-2014:0888 https://rhn.redhat.com/errata/RHSA-2014-0888.html
Comment 19 errata-xmlrpc 2014-09-22 00:01:33 EDT
This issue has been addressed in the following products:

  OpenStack 5 for RHEL 7

Via RHSA-2014:1268 https://rhn.redhat.com/errata/RHSA-2014-1268.html

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