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Bug 1326082 - (CVE-2016-4002) CVE-2016-4002 Qemu: net: buffer overflow in MIPSnet emulator
CVE-2016-4002 Qemu: net: buffer overflow in MIPSnet emulator
Status: NEW
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=20160407,repor...
: Security
Depends On: 1326083 1326084
Blocks: 1310508
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Reported: 2016-04-11 14:25 EDT by Prasad J Pandit
Modified: 2018-07-18 10:52 EDT (History)
36 users (show)

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Description Prasad J Pandit 2016-04-11 14:25:55 EDT 
Qemu emulator built with the MIPSnet controller emulator is vulnerable to a
buffer overflow issue. It could occur while receiving network packets in
mipsnet_receive(), if the guest NIC is configured to accept large(MTU) packets.

A remote user/process could use this flaw to crash Qemu resulting in DoS; OR potentially execute arbitrary code with privileges of the Qemu process on a host.

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2016-04/msg01131.html

Reference:
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  -> http://www.openwall.com/lists/oss-security/2016/04/11/6
Comment 1 Prasad J Pandit 2016-04-11 14:26:31 EDT 
Acknowledgments:

Name: Oleksandr Bazhaniuk of Advanced Threat Research team at Intel Inc.
Comment 2 Prasad J Pandit 2016-04-11 14:27:54 EDT 
Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1326084]
Comment 3 Prasad J Pandit 2016-04-11 14:28:12 EDT 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1326083]
Comment 4 Prasad J Pandit 2016-04-12 06:21:36 EDT 
Statement:

This has been rated as having Moderate security impact and is not currently
planned to be addressed in future updates. For additional information, refer
to the Red Hat Enterprise Linux Life Cycle:
https://access.redhat.com/support/policy/updates/errata/.
Comment 5 Andrej Nemec 2016-04-12 08:09:47 EDT 
CVE assignment:

http://seclists.org/oss-sec/2016/q2/62
Comment 6 Fedora Update System 2016-04-29 20:25:18 EDT 
xen-4.5.3-2.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
Comment 7 Fedora Update System 2016-04-30 20:22:15 EDT 
xen-4.5.3-2.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
Comment 8 Fedora Update System 2016-05-07 08:04:38 EDT 
xen-4.6.1-6.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.
Comment 9 Fedora Update System 2016-06-25 15:23:42 EDT 
qemu-2.6.0-4.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.
Comment 10 Fedora Update System 2016-07-02 15:23:31 EDT 
qemu-2.3.1-16.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
Comment 11 Fedora Update System 2016-07-02 15:28:49 EDT 
qemu-2.4.1-11.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
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