Bug 1066345 (CVE-2013-4526) - CVE-2013-4526 qemu: ahci: fix buffer overrun on invalid state load
Summary: CVE-2013-4526 qemu: ahci: fix buffer overrun on invalid state load
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2013-4526
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: 1095696 1095697 1095698
Blocks: 1036654
TreeView+ depends on / blocked
 
Reported: 2014-02-18 09:30 UTC by Petr Matousek
Modified: 2019-09-29 13:13 UTC (History)
25 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2014-09-22 11:32:59 UTC


Attachments (Terms of Use)

Description Petr Matousek 2014-02-18 09:30:55 UTC
Within hw/ide/ahci.c, VARRAY refers to ports which is also loaded.  So
we use the old version of ports to read the array but then allow any
value for ports.

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=ae2158ad6ce0845b2fae2a22aa7f19c0d7a71ce5

Comment 1 Petr Matousek 2014-02-18 11:11:07 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 12:17:38 UTC
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1095696]

Comment 4 Fedora Update System 2014-05-16 10:00:47 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.


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