Bug 864804 (CVE-2013-4542) - VUL-0: CVE-2013-4542: qemu: virtio-scsi: buffer overrun on invalid state load
Summary: VUL-0: CVE-2013-4542: qemu: virtio-scsi: buffer overrun on invalid state load
Status: RESOLVED FIXED
Alias: CVE-2013-4542
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents (show other bugs)
Version: unspecified
Hardware: Other openSUSE 13.1
: P3 - Medium : Normal
Target Milestone: ---
Assignee: Andreas Färber
QA Contact: Security Team bot
URL: https://smash.suse.de/issue/96367/
Whiteboard: maint:running:57292:moderate maint:re...
Keywords:
Depends on:
Blocks:
 
Reported: 2014-02-20 08:58 UTC by Victor Pereira
Modified: 2016-04-27 18:54 UTC (History)
3 users (show)

See Also:
Found By: Security Response Team
Services Priority:
Business Priority:
Blocker: ---
Marketing QA Status: ---
IT Deployment: ---

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Description Victor Pereira 2014-02-20 08:58:04 UTC 
CVE-2013-4542

Michael S. Tsirkin writes:
hw/scsi/scsi-bus.c invokes load_request.

 virtio_scsi_load_request does:
    qemu_get_buffer(f, (unsigned char *)&req->elem, sizeof(req->elem));

this probably can make elem invalid, for example, make in_num or out_num
out-of-bounds, later leading to 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.



References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2013-4542
https://bugzilla.redhat.com/show_bug.cgi?id=1066382
Comment 1 Swamp Workflow Management 2014-02-20 23:00:41 UTC 
bugbot adjusting priority
Comment 3 Bernhard Wiedemann 2014-05-24 13:01:32 UTC 
This is an autogenerated message for OBS integration:
This bug (864804) was mentioned in
https://build.opensuse.org/request/show/235281 Factory / qemu
Comment 4 Swamp Workflow Management 2014-06-18 13:49:08 UTC 
Update released for: kvm, kvm-debuginfo, kvm-debugsource
Products:
SLE-DESKTOP 11-SP3 (i386, x86_64)
SLE-SERVER 11-SP3 (i386, s390x, x86_64)
Comment 5 Swamp Workflow Management 2014-06-18 17:06:46 UTC 
SUSE-SU-2014:0816-1: An update that solves two vulnerabilities and has 20 fixes is now available.

Category: security (moderate)
Bug References: 864391,864649,864650,864653,864655,864665,864671,864673,864678,864682,864769,864796,864801,864802,864804,864805,864811,864812,864814,873235,874749,874788
CVE References: CVE-2014-0150,CVE-2014-2894
Sources used:
SUSE Linux Enterprise Server 11 SP3 (src):    kvm-1.4.2-0.15.2
SUSE Linux Enterprise Desktop 11 SP3 (src):    kvm-1.4.2-0.15.2
Comment 7 Johannes Segitz 2016-01-19 16:15:20 UTC 
also fixed in all XENs, openSUSE out of maintenance