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Bug 1066358 - (CVE-2013-4532) CVE-2013-4532 qemu: stellaris_enet: buffer overrun on incoming migration
CVE-2013-4532 qemu: stellaris_enet: buffer overrun on incoming migration
Status: CLOSED NOTABUG
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20131203,repor...
: Security
Depends On:
Blocks: 1036654
  Show dependency treegraph
 
Reported: 2014-02-18 04:44 EST by Petr Matousek
Modified: 2014-09-22 07:31 EDT (History)
24 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2014-09-22 07:31:14 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Petr Matousek 2014-02-18 04:44:04 EST
Three issues were found:
 * s->next_packet is read from wire as an index into s->rx[].
 * s->tx_fifo_len is read from the wire and later used as an index into
     s->tx_fifo[] when a DATA command is issued by the guest.
 * s->tx_frame_len is read from the wire and can later used as an index
     into s->tx_fifo[] for memset() when a DATA command is issued by the
     guest.

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://lists.gnu.org/archive/html/qemu-devel/2013-12/msg00403.html
http://lists.gnu.org/archive/html/qemu-devel/2013-12/msg00414.html
http://lists.gnu.org/archive/html/qemu-devel/2013-12/msg00404.html
Comment 1 Petr Matousek 2014-02-18 06:24:28 EST
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

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