Bug 1066353 (CVE-2013-4529) - CVE-2013-4529 qemu: hw/pci/pcie_aer.c: buffer overrun on invalid state load
Summary: CVE-2013-4529 qemu: hw/pci/pcie_aer.c: buffer overrun on invalid state load
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2013-4529
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: 1095713 1095714 1095716 1133850
Blocks: 1036654 1133827
TreeView+ depends on / blocked
 
Reported: 2014-02-18 09:37 UTC by Petr Matousek
Modified: 2023-05-12 20:45 UTC (History)
40 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2014-09-22 04:53:24 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
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 09:37:47 UTC 
Michael S. Tsirkin writes:

There are two issues in hw/pci/pcie_aer.c:
1. log_max from remote can be larger than on local then buffer will
   overrun with data coming from state file.
2. log_num can be larger then we get data corrution again with an
   overflow but not adversary controlled.

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=5f691ff91d323b6f97c6600405a7f9dc115a0ad1
Comment 1 Petr Matousek 2014-02-18 11:16:22 UTC 
Statement:

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

This issue does not affect the versions of qemu-kvm package as shipped
with Red Hat Enterprise Linux 6.
Comment 3 Prasad Pandit 2014-05-08 12:27:07 UTC 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1095713]
Comment 4 Fedora Update System 2014-05-16 10:00:18 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 5 Prasad Pandit 2014-07-18 13:33:23 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 6 errata-xmlrpc 2014-07-23 16:15:52 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 9 errata-xmlrpc 2014-09-22 04:01:22 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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