975128 – (CVE-2016-4001) VUL-1: CVE-2016-4001: qemu: net: buffer overflow in stellaris_enet emulator

Bug 975128 (CVE-2016-4001) - VUL-1: CVE-2016-4001: qemu: net: buffer overflow in stellaris_enet emulator

Summary: VUL-1: CVE-2016-4001: qemu: net: buffer overflow in stellaris_enet emulator

Status:	RESOLVED FIXED

Alias:	CVE-2016-4001

Product:	SUSE Security Incidents
Classification:	Novell Products
Component:	Incidents (show other bugs)
Version:	unspecified
Hardware:	Other Other

Priority:	P3 - Medium Severity: Normal
Target Milestone:	---
Assignee:	Bruce Rogers
QA Contact:	Security Team bot

URL:	https://smash.suse.de/issue/167652/
Whiteboard:	CVSSv2:RedHat:CVE-2016-4001:4.3:(AV:A...
Keywords:

Depends on:
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Reported:	2016-04-12 12:39 UTC by Johannes Segitz
Modified:	2017-03-08 16:55 UTC (History)
CC List:	2 users (show)

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

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Description Johannes Segitz 2016-04-12 12:39:34 UTC

Qemu emulator built with the Luminary Micro Stellaris Ethernet Controller is
vulnerable to a buffer overflow issue. It could occur while receiving network
packets in stellaris_enet_receive(), if the guest NIC is configured to accept
large(MTU) packets.

A remote user/process could use this flaw to crash the Qemu process on a host,
resulting in DoS.

Upstream fix: http://git.qemu.org/?p=qemu.git;a=commit;h=3a15cc0e1ee7168db0782133d2607a6bfa422d66

References:
https://lists.gnu.org/archive/html/qemu-devel/2016-04/msg01334.html
https://bugzilla.redhat.com/show_bug.cgi?id=1325884
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-4001
http://seclists.org/oss-sec/2016/q2/61

Comment 1 Alexander Graf 2016-04-12 12:51:18 UTC

This code only ever gets used in the Stellaris machine emulation, which is a Cortex-M3 emulation model in qemu-system-arm.

This model is not usable with KVM, so the only attack surface is during traditional software emulation if a user wants to emulate a Cortex-M3. I don't think people run that model too much these days - definitely not for long running workloads.

IMHO the attack surface is so small that it's not even worth backporting patches for.

Comment 2 Swamp Workflow Management 2016-04-12 22:00:57 UTC

bugbot adjusting priority

Comment 3 Johannes Segitz 2016-04-22 12:38:32 UTC

(In reply to Alexander Graf from comment #1)
agreed, lets only fix this in qemu where we can use the existing commit

Comment 4 Swamp Workflow Management 2016-06-13 11:13:46 UTC

SUSE-SU-2016:1560-1: An update that solves 37 vulnerabilities and has two fixes is now available.

Category: security (important)
Bug References: 886378,895528,901508,928393,934069,940929,944463,947159,958491,958917,959005,959386,960334,960708,960725,960835,961332,961333,961358,961556,961691,962320,963782,964413,967969,969121,969122,969350,970036,970037,975128,975136,975700,976109,978158,978160,980711,980723,981266
CVE References: CVE-2014-3615,CVE-2014-3689,CVE-2014-9718,CVE-2015-3214,CVE-2015-5239,CVE-2015-5745,CVE-2015-7295,CVE-2015-7549,CVE-2015-8504,CVE-2015-8558,CVE-2015-8567,CVE-2015-8568,CVE-2015-8613,CVE-2015-8619,CVE-2015-8743,CVE-2015-8744,CVE-2015-8745,CVE-2015-8817,CVE-2015-8818,CVE-2016-1568,CVE-2016-1714,CVE-2016-1922,CVE-2016-1981,CVE-2016-2198,CVE-2016-2538,CVE-2016-2841,CVE-2016-2857,CVE-2016-2858,CVE-2016-3710,CVE-2016-3712,CVE-2016-4001,CVE-2016-4002,CVE-2016-4020,CVE-2016-4037,CVE-2016-4439,CVE-2016-4441,CVE-2016-4952
Sources used:
SUSE Linux Enterprise Server 12 (src):    qemu-2.0.2-48.19.1
SUSE Linux Enterprise Desktop 12 (src):    qemu-2.0.2-48.19.1

Comment 5 Swamp Workflow Management 2016-06-28 18:12:38 UTC

SUSE-SU-2016:1698-1: An update that solves 33 vulnerabilities and has three fixes is now available.

Category: security (important)
Bug References: 895528,901508,928393,934069,936132,940929,944463,945404,945987,945989,947159,958491,958917,959005,960334,960725,961332,961333,961358,961556,961691,962320,963782,964413,967969,969350,970036,970037,975128,975136,975700,976109,978158,978160,980711,980723
CVE References: CVE-2014-3615,CVE-2014-3689,CVE-2014-9718,CVE-2015-3214,CVE-2015-5239,CVE-2015-5278,CVE-2015-5279,CVE-2015-5745,CVE-2015-6855,CVE-2015-7295,CVE-2015-7549,CVE-2015-8504,CVE-2015-8558,CVE-2015-8613,CVE-2015-8619,CVE-2015-8743,CVE-2016-1568,CVE-2016-1714,CVE-2016-1922,CVE-2016-1981,CVE-2016-2198,CVE-2016-2538,CVE-2016-2841,CVE-2016-2857,CVE-2016-2858,CVE-2016-3710,CVE-2016-3712,CVE-2016-4001,CVE-2016-4002,CVE-2016-4020,CVE-2016-4037,CVE-2016-4439,CVE-2016-4441
Sources used:
SUSE Linux Enterprise Server 11-SP3-LTSS (src):    kvm-1.4.2-46.1

Comment 6 Swamp Workflow Management 2016-06-29 09:11:57 UTC

SUSE-SU-2016:1703-1: An update that solves 32 vulnerabilities and has two fixes is now available.

Category: security (important)
Bug References: 886378,940929,958491,958917,959005,959386,960334,960708,960725,960835,961332,961333,961358,961556,961691,962320,963782,964411,964413,967969,969121,969122,969350,970036,970037,975128,975136,975700,976109,978158,978160,980711,980723,981266
CVE References: CVE-2015-5745,CVE-2015-7549,CVE-2015-8504,CVE-2015-8558,CVE-2015-8567,CVE-2015-8568,CVE-2015-8613,CVE-2015-8619,CVE-2015-8743,CVE-2015-8744,CVE-2015-8745,CVE-2015-8817,CVE-2015-8818,CVE-2016-1568,CVE-2016-1714,CVE-2016-1922,CVE-2016-1981,CVE-2016-2197,CVE-2016-2198,CVE-2016-2538,CVE-2016-2841,CVE-2016-2857,CVE-2016-2858,CVE-2016-3710,CVE-2016-3712,CVE-2016-4001,CVE-2016-4002,CVE-2016-4020,CVE-2016-4037,CVE-2016-4439,CVE-2016-4441,CVE-2016-4952
Sources used:
SUSE Linux Enterprise Server 12-SP1 (src):    qemu-2.3.1-14.1
SUSE Linux Enterprise Desktop 12-SP1 (src):    qemu-2.3.1-14.1

Comment 7 Swamp Workflow Management 2016-07-06 20:09:04 UTC

openSUSE-SU-2016:1750-1: An update that solves 32 vulnerabilities and has two fixes is now available.

Category: security (important)
Bug References: 886378,940929,958491,958917,959005,959386,960334,960708,960725,960835,961332,961333,961358,961556,961691,962320,963782,964411,964413,967969,969121,969122,969350,970036,970037,975128,975136,975700,976109,978158,978160,980711,980723,981266
CVE References: CVE-2015-5745,CVE-2015-7549,CVE-2015-8504,CVE-2015-8558,CVE-2015-8567,CVE-2015-8568,CVE-2015-8613,CVE-2015-8619,CVE-2015-8743,CVE-2015-8744,CVE-2015-8745,CVE-2015-8817,CVE-2015-8818,CVE-2016-1568,CVE-2016-1714,CVE-2016-1922,CVE-2016-1981,CVE-2016-2197,CVE-2016-2198,CVE-2016-2538,CVE-2016-2841,CVE-2016-2857,CVE-2016-2858,CVE-2016-3710,CVE-2016-3712,CVE-2016-4001,CVE-2016-4002,CVE-2016-4020,CVE-2016-4037,CVE-2016-4439,CVE-2016-4441,CVE-2016-4952
Sources used:
openSUSE Leap 42.1 (src):    qemu-2.3.1-15.1, qemu-linux-user-2.3.1-15.1, qemu-testsuite-2.3.1-15.2

Comment 8 Swamp Workflow Management 2016-07-11 14:44:55 UTC

SUSE-SU-2016:1785-1: An update that solves 33 vulnerabilities and has three fixes is now available.

Category: security (important)
Bug References: 895528,901508,928393,934069,936132,940929,944463,945404,945987,945989,947159,958491,958917,959005,960334,960725,961332,961333,961358,961556,961691,962320,963782,964413,967969,969350,970036,970037,975128,975136,975700,976109,978158,978160,980711,980723
CVE References: CVE-2014-3615,CVE-2014-3689,CVE-2014-9718,CVE-2015-3214,CVE-2015-5239,CVE-2015-5278,CVE-2015-5279,CVE-2015-5745,CVE-2015-6855,CVE-2015-7295,CVE-2015-7549,CVE-2015-8504,CVE-2015-8558,CVE-2015-8613,CVE-2015-8619,CVE-2015-8743,CVE-2016-1568,CVE-2016-1714,CVE-2016-1922,CVE-2016-1981,CVE-2016-2198,CVE-2016-2538,CVE-2016-2841,CVE-2016-2857,CVE-2016-2858,CVE-2016-3710,CVE-2016-3712,CVE-2016-4001,CVE-2016-4002,CVE-2016-4020,CVE-2016-4037,CVE-2016-4439,CVE-2016-4441
Sources used:
SUSE Linux Enterprise Server 11-SP4 (src):    kvm-1.4.2-44.1

Comment 10 Bruce Rogers 2017-03-08 16:55:47 UTC

Fixed.