Bug 1066386 (CVE-2013-4540)

Summary: CVE-2013-4540 qemu: zaurus: buffer overrun on invalid state load
Product: [Other] Security Response Reporter: Petr Matousek <pmatouse>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: amit.shah, areis, berrange, bsarathy, cfergeau, dwmw2, ehabkost, gleb, itamar, jkurik, juzhang, knoel, minovotn, mkenneth, mst, mtosatti, pbonzini, pfrields, ppandit, rbalakri, rhod, rjones, scottt.tw, virt-maint, virt-maint
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2014-09-22 11:30:17 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1095748, 1095749, 1095751    
Bug Blocks: 1036654    

Description Petr Matousek 2014-02-18 10:14:04 UTC 
Within scoop_gpio_handler_update, if prev_level has a high bit set, then
we get bit > 16 and that does a buffer overrun.

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=52f91c3723932f8340fe36c8ec8b18a757c37b2b
Comment 1 Petr Matousek 2014-02-18 11:33:35 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 Pandit 2014-05-08 13:16:25 UTC 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1095748]
Comment 4 Fedora Update System 2014-05-16 09:59:07 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.