Bug 1066405 (CVE-2013-4534) - CVE-2013-4534 qemu: openpic: buffer overrun on incoming migration
Summary: CVE-2013-4534 qemu: openpic: buffer overrun on incoming migration
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2013-4534
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: 1095770 1095771 1095772
Blocks: 1036654
TreeView+ depends on / blocked
 
Reported: 2014-02-18 10:25 UTC by Petr Matousek
Modified: 2020-02-11 00:48 UTC (History)
26 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2014-06-10 12:09:22 UTC


Attachments (Terms of Use)

Description Petr Matousek 2014-02-18 10:25:25 UTC
opp->nb_cpus is read from the wire and used to determine how many
IRQDest elements to read into opp->dst[]. If the value exceeds the
length of opp->dst[], MAX_CPU, opp->dst[] can be overrun with arbitrary
data from the wire.

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=73d963c0a75cb99c6aaa3f6f25e427aa0b35a02e

Comment 1 Petr Matousek 2014-02-18 11:42:40 UTC
Statement:

Not vulnerable.

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 J Pandit 2014-05-08 13:38:01 UTC
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1095770]

Comment 4 Fedora Update System 2014-05-16 09:58:17 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.


Note You need to log in before you can comment on or make changes to this bug.