Bug 1066334 (CVE-2013-4148) - CVE-2013-4148 qemu: virtio-net: buffer overflow on invalid state load
Summary: CVE-2013-4148 qemu: virtio-net: buffer overflow on invalid state load
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2013-4148
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: 1066430 1095675 1095676 1095677 1095678 1102579 1102580 1110194 1110284 1110288 1133850
Blocks: 1036654 1110626 1133827
TreeView+ depends on / blocked
 
Reported: 2014-02-18 09:19 UTC by Petr Matousek
Modified: 2023-05-12 22:59 UTC (History)
46 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2014-09-22 11:23:48 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2014:0674 0 normal SHIPPED_LIVE Moderate: rhev-hypervisor6 3.4.0 security, bug fix, and enhancement update 2014-06-09 18:35:12 UTC
Red Hat Product Errata RHSA-2014:0743 0 normal SHIPPED_LIVE Moderate: qemu-kvm security and bug fix update 2014-06-11 00:14:13 UTC
Red Hat Product Errata RHSA-2014:0744 0 normal SHIPPED_LIVE Moderate: qemu-kvm-rhev security update 2014-06-11 00:14:07 UTC
Red Hat Product Errata RHSA-2014:0888 0 normal SHIPPED_LIVE Moderate: qemu-kvm-rhev security update 2014-07-24 19:38:25 UTC
Red Hat Product Errata RHSA-2014:0927 0 normal SHIPPED_LIVE Moderate: qemu-kvm security and bug fix update 2014-07-23 20:15:13 UTC
Red Hat Product Errata RHSA-2014:1268 0 normal SHIPPED_LIVE Moderate: qemu-kvm-rhev security update 2014-09-22 08:00:39 UTC

Description Petr Matousek 2014-02-18 09:19:13 UTC 
Michael S. Tsirkin writes:

QEMU 1.0 integer conversion in virtio_net_load()@hw/net/virtio-net.c

>         n->mac_table.in_use = qemu_get_be32(f);

in_use is int so it can get negative when assigned 32bit unsigned value.

>         /* MAC_TABLE_ENTRIES may be different from the saved image */
>         if (n->mac_table.in_use <= MAC_TABLE_ENTRIES) {

passing this check ^^^

>             qemu_get_buffer(f, n->mac_table.macs,
>                             n->mac_table.in_use * ETH_ALEN);

with good in_use value, "n->mac_table.in_use * ETH_ALEN" can get
positive and bigger than mac_table.macs. For example 0x81000000
satisfies this condition when ETH_ALEN is 6.

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=71f7fe48e10a8437c9d42d859389f37157f59980
Comment 1 Petr Matousek 2014-02-18 10:57:46 UTC 
Statement:

This issue does not affect the versions of kvm package as shipped with
Red Hat Enterprise Linux 5.
Comment 4 Prasad Pandit 2014-05-08 11:39:07 UTC 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1095676]
Comment 5 Fedora Update System 2014-05-16 10:01:33 UTC 
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 7 errata-xmlrpc 2014-06-09 14:36:34 UTC 
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 8 Murray McAllister 2014-06-10 07:39:03 UTC 
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 9 errata-xmlrpc 2014-06-10 20:15:30 UTC 
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 20:19:37 UTC 
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 16:15:27 UTC 
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 15:38:40 UTC 
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 04:00:55 UTC 
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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