Bug 1066354 - (CVE-2013-4530) CVE-2013-4530 qemu: pl022: fix buffer overun on invalid state load
CVE-2013-4530 qemu: pl022: fix buffer overun on invalid state load
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: 1095719 1095720 1095723
Blocks: 1036654
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Reported: 2014-02-18 04:39 EST by Petr Matousek
Modified: 2015-10-27 23:38 EDT (History)
25 users (show)

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Doc Type: Bug Fix
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Last Closed: 2014-09-22 07:32:40 EDT
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Description Petr Matousek 2014-02-18 04:39:10 EST
pl022.c did not bounds check tx_fifo_head and rx_fifo_head after loading
them from file and before they are used to dereference array.

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:
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  -> http://git.qemu.org/?p=qemu.git;a=commit;h=d8d0a0bc7e194300e53a346d25fe5724fd588387
Comment 1 Petr Matousek 2014-02-18 06:18:08 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
Comment 3 Prasad J Pandit 2014-05-08 08:29:32 EDT
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1095719]
Comment 5 Fedora Update System 2014-05-16 06:00:01 EDT
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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