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Bug 1096821 - (CVE-2014-3461) CVE-2014-3461 Qemu: usb: fix up post load checks
CVE-2014-3461 Qemu: usb: fix up post load checks
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
: ---
: ---
Assigned To: Red Hat Product Security
impact=moderate,public=20140512,repor...
: Security
Depends On: 1096825 1096826 1096828 1096829 1097260 1102579 1102580 1110194 1110284 1110288 1133850
Blocks: 1096814 1110626 1133827
  Show dependency tree / graph
 
Reported: 2014-05-12 09:39 EDT by Prasad J Pandit
Modified: 2016-04-26 16:28 EDT (History)
40 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Environment:
Last Closed: 2014-09-22 07:08:10 EDT
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Regression: ---
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CRM:
Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2014:0674 normal SHIPPED_LIVE Moderate: rhev-hypervisor6 3.4.0 security, bug fix, and enhancement update 2014-06-09 14:35:12 EDT
Red Hat Product Errata RHSA-2014:0743 normal SHIPPED_LIVE Moderate: qemu-kvm security and bug fix update 2014-06-10 20:14:13 EDT
Red Hat Product Errata RHSA-2014:0744 normal SHIPPED_LIVE Moderate: qemu-kvm-rhev security update 2014-06-10 20:14:07 EDT
Red Hat Product Errata RHSA-2014:0888 normal SHIPPED_LIVE Moderate: qemu-kvm-rhev security update 2014-07-24 15:38:25 EDT
Red Hat Product Errata RHSA-2014:0927 normal SHIPPED_LIVE Moderate: qemu-kvm security and bug fix update 2014-07-23 16:15:13 EDT
Red Hat Product Errata RHSA-2014:1268 normal SHIPPED_LIVE Moderate: qemu-kvm-rhev security update 2014-09-22 04:00:39 EDT

  None (edit)
Description Prasad J Pandit 2014-05-12 09:39:37 EDT 
Correct post load checks:
1. dev->setup_len == sizeof(dev->data_buf)
    seems fine, no need to fail migration
2. When state is DATA, passing index > len
   will cause memcpy with negative length,
   resulting in heap overflow

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://article.gmane.org/gmane.comp.emulators.qemu/272092
Comment 1 Prasad J Pandit 2014-05-12 09:43:41 EDT 
Statement:

This issue does 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 6 and 7.
Comment 3 Prasad J Pandit 2014-05-13 08:49:25 EDT 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1097260]
Comment 6 errata-xmlrpc 2014-06-09 10:38:01 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 7 Fedora Update System 2014-06-09 22:55:55 EDT 
qemu-1.6.2-6.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 Murray McAllister 2014-06-10 03:57:20 EDT 
Acknowledgements:

This issue was discovered as part of the state loading QEMU audit performed by Michael S. Tsirkin of Red Hat, Anthony Liguori, and Michael Roth.
Comment 9 errata-xmlrpc 2014-06-10 16:14:23 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 10 errata-xmlrpc 2014-06-10 16:21:21 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 14 errata-xmlrpc 2014-07-23 12:17:43 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 16 errata-xmlrpc 2014-07-24 11:39:33 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 18 errata-xmlrpc 2014-09-22 00:01:55 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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