Bug 981264 (CVE-2014-3672) - VUL-0: CVE-2014-3672: xen: Unrestricted qemu logging (XSA-180)
Summary: VUL-0: CVE-2014-3672: xen: Unrestricted qemu logging (XSA-180)
Status: RESOLVED FIXED
Alias: CVE-2014-3672
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents (show other bugs)
Version: unspecified
Hardware: Other Other
: P3 - Medium : Normal
Target Milestone: ---
Deadline: 2016-10-06
Assignee: Security Team bot
QA Contact: Security Team bot
URL:
Whiteboard: CVSSv2:SUSE:CVE-2014-3672:2.1:(AV:L/A...
Keywords:
Depends on:
Blocks:
 
Reported: 2016-05-24 05:52 UTC by Alexander Bergmann
Modified: 2021-01-21 18:29 UTC (History)
3 users (show)

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

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Description Alexander Bergmann 2016-05-24 05:52:41 UTC 
http://xenbits.xen.org/xsa/advisory-180.html


            Xen Security Advisory CVE-2014-3672 / XSA-180

                       Unrestricted qemu logging

ISSUE DESCRIPTION
=================

When the libxl toolstack launches qemu for HVM guests, it pipes the
output of stderr to a file in /var/log/xen.  This output is not
rate-limited in any way.  The guest can easily cause qemu to print
messages to stderr, causing this file to become arbitrarily large.

IMPACT
======

The disk containing the logfile can be exausted, possibly causing a
denial-of-service (DoS).

VULNERABLE SYSTEMS
==================

All versions of Xen are affected.

Only x86 systems are affected; ARM systems are not affected.

Only systems running HVM guests are affected; systems running only PV
guests are not affected.

Both qemu-upstream and qemu-traditional are affected.

MITIGATION
==========

Running only PV guests will avoid this vulnerability.

CREDITS
=======

This issue was discovered by Andrew Sorensen of leviathansecurity.com.

RESOLUTION
==========

Applying the appropriate attached patch resolves this issue.

The patches adopt a simple and rather crude approach which is
effective at resolving the security issue in the context of a Xen
device model.  They may not be appropriate for adoption upstream or in
other contexts.

xsa180-qemut.patch       qemu-xen-traditional (all supported versions)
xsa180-qemuu.patch       qemu-xen (upstream) Xen unstable

$ sha256sum xsa180*
7733fd57868c4313c7c47ccde3aba21e9ed5002ee8a937b20997fb3d2282a5d7  xsa180-qemut.patch
7a92bbd3b6368f91e694400c8e850567972e14852e4f61fbb61cc3b7b98f14ef  xsa180-qemuu.patch
$

DEPLOYMENT DURING EMBARGO
=========================

Deployment of the patches and/or mitigations described above (or
others which are substantially similar) is permitted during the
embargo, even on public-facing systems with untrusted guest users and
administrators.

But: Distribution of updated software is prohibited (except to other
members of the predisclosure list).

Predisclosure list members who wish to deploy significantly different
patches and/or mitigations, please contact the Xen Project Security
Team.

(Note: this during-embargo deployment notice is retained in
post-embargo publicly released Xen Project advisories, even though it
is then no longer applicable.  This is to enable the community to have
oversight of the Xen Project Security Team's decisionmaking.)

For more information about permissible uses of embargoed information,
consult the Xen Project community's agreed Security Policy:
  http://www.xenproject.org/security-policy.html
Comment 2 Swamp Workflow Management 2016-05-24 22:00:28 UTC 
bugbot adjusting priority
Comment 3 Swamp Workflow Management 2016-08-17 16:14:59 UTC 
SUSE-SU-2016:2093-1: An update that solves 27 vulnerabilities and has 18 fixes is now available.

Category: security (important)
Bug References: 900418,949889,953339,953362,953518,954872,957986,958848,961600,963161,964427,973188,973631,974038,975130,975138,975907,976058,976111,978164,978295,978413,979620,979670,980716,980724,981264,981276,982024,982025,982026,982224,982225,982286,982695,982960,983973,983984,984981,985503,986586,988675,988676,990843,990923
CVE References: CVE-2014-3672,CVE-2016-3158,CVE-2016-3159,CVE-2016-3710,CVE-2016-3960,CVE-2016-4001,CVE-2016-4002,CVE-2016-4020,CVE-2016-4037,CVE-2016-4439,CVE-2016-4441,CVE-2016-4453,CVE-2016-4454,CVE-2016-4952,CVE-2016-4962,CVE-2016-4963,CVE-2016-5105,CVE-2016-5106,CVE-2016-5107,CVE-2016-5126,CVE-2016-5238,CVE-2016-5337,CVE-2016-5338,CVE-2016-5403,CVE-2016-6258,CVE-2016-6259,CVE-2016-6351
Sources used:
SUSE Linux Enterprise Software Development Kit 12-SP1 (src):    xen-4.5.3_08-17.1
SUSE Linux Enterprise Server 12-SP1 (src):    xen-4.5.3_08-17.1
SUSE Linux Enterprise Desktop 12-SP1 (src):    xen-4.5.3_08-17.1
Comment 4 Swamp Workflow Management 2016-08-18 16:16:29 UTC 
SUSE-SU-2016:2100-1: An update that solves 26 vulnerabilities and has 16 fixes is now available.

Category: security (important)
Bug References: 954872,955399,957986,958848,961600,963161,964427,967630,973188,974038,974912,975130,975138,975907,976058,976111,978164,978295,978413,979035,979620,979670,980716,980724,981264,981276,982024,982025,982026,982224,982225,982286,982695,982960,983973,983984,985503,986586,988675,989235,990843,990923
CVE References: CVE-2014-3672,CVE-2016-3158,CVE-2016-3159,CVE-2016-3710,CVE-2016-3960,CVE-2016-4001,CVE-2016-4002,CVE-2016-4020,CVE-2016-4037,CVE-2016-4439,CVE-2016-4441,CVE-2016-4453,CVE-2016-4454,CVE-2016-4952,CVE-2016-4962,CVE-2016-4963,CVE-2016-5105,CVE-2016-5106,CVE-2016-5107,CVE-2016-5126,CVE-2016-5238,CVE-2016-5337,CVE-2016-5338,CVE-2016-5403,CVE-2016-6258,CVE-2016-6351
Sources used:
SUSE Linux Enterprise Software Development Kit 11-SP4 (src):    xen-4.4.4_07-37.1
SUSE Linux Enterprise Server 11-SP4 (src):    xen-4.4.4_07-37.1
SUSE Linux Enterprise Debuginfo 11-SP4 (src):    xen-4.4.4_07-37.1
Comment 5 Swamp Workflow Management 2016-09-29 16:21:22 UTC 
An update workflow for this issue was started.
This issue was rated as important.
Please submit fixed packages until 2016-10-06.
When done, reassign the bug to security-team@suse.de.
https://swamp.suse.de/webswamp/wf/63075
Comment 6 Charles Arnold 2016-10-03 17:44:19 UTC 
Submitted for,

SLE10-SP3
SLE10-SP4
SLE-11-SP1
SLE-11-SP2
SLE-11-SP3
SLE-11-SP4
SLE-12
SLE-12-SP1
Comment 7 Swamp Workflow Management 2016-10-11 17:14:43 UTC 
openSUSE-SU-2016:2494-1: An update that solves 46 vulnerabilities and has 17 fixes is now available.

Category: security (important)
Bug References: 900418,949889,953339,953362,953518,954872,955104,958848,959330,959552,961100,961600,963161,964427,970135,971949,973188,973631,974038,975130,975138,975907,976058,976111,978164,978295,978413,979620,979670,980716,980724,981264,981276,982024,982025,982026,982224,982225,982286,982695,982960,983973,983984,984981,985503,986586,988675,988676,990500,990843,990923,990970,991934,992224,993665,994421,994625,994761,994772,994775,995785,995789,995792
CVE References: CVE-2014-3615,CVE-2014-3672,CVE-2015-7512,CVE-2015-8504,CVE-2015-8558,CVE-2015-8568,CVE-2015-8613,CVE-2015-8743,CVE-2016-1714,CVE-2016-1981,CVE-2016-3158,CVE-2016-3159,CVE-2016-3710,CVE-2016-3712,CVE-2016-3960,CVE-2016-4001,CVE-2016-4002,CVE-2016-4020,CVE-2016-4037,CVE-2016-4439,CVE-2016-4441,CVE-2016-4453,CVE-2016-4454,CVE-2016-4480,CVE-2016-4952,CVE-2016-4962,CVE-2016-4963,CVE-2016-5105,CVE-2016-5106,CVE-2016-5107,CVE-2016-5126,CVE-2016-5238,CVE-2016-5337,CVE-2016-5338,CVE-2016-5403,CVE-2016-6258,CVE-2016-6259,CVE-2016-6351,CVE-2016-6833,CVE-2016-6834,CVE-2016-6835,CVE-2016-6836,CVE-2016-6888,CVE-2016-7092,CVE-2016-7093,CVE-2016-7094
Sources used:
openSUSE Leap 42.1 (src):    xen-4.5.3_10-15.2
Comment 8 Swamp Workflow Management 2016-10-11 17:25:53 UTC 
openSUSE-SU-2016:2497-1: An update that solves 38 vulnerabilities and has 20 fixes is now available.

Category: security (important)
Bug References: 953339,953362,953518,954872,955399,958848,961100,961600,963161,964427,970135,971949,973188,973631,974038,975130,975138,975907,976058,976111,978164,978295,978413,979035,979620,979670,980716,980724,981264,981276,982024,982025,982026,982224,982225,982286,982695,982960,983973,983984,984981,985503,986586,988675,990843,990923,990970,991934,992224,994421,994625,994761,994772,994775,995785,995789,995792,997731
CVE References: CVE-2014-3615,CVE-2014-3672,CVE-2016-3158,CVE-2016-3159,CVE-2016-3710,CVE-2016-3712,CVE-2016-3960,CVE-2016-4001,CVE-2016-4002,CVE-2016-4020,CVE-2016-4037,CVE-2016-4439,CVE-2016-4441,CVE-2016-4453,CVE-2016-4454,CVE-2016-4480,CVE-2016-4952,CVE-2016-4962,CVE-2016-4963,CVE-2016-5105,CVE-2016-5106,CVE-2016-5107,CVE-2016-5126,CVE-2016-5238,CVE-2016-5337,CVE-2016-5338,CVE-2016-5403,CVE-2016-6258,CVE-2016-6351,CVE-2016-6833,CVE-2016-6834,CVE-2016-6835,CVE-2016-6836,CVE-2016-6888,CVE-2016-7092,CVE-2016-7093,CVE-2016-7094,CVE-2016-7154
Sources used:
openSUSE 13.2 (src):    xen-4.4.4_05-49.1
Comment 9 Swamp Workflow Management 2016-10-13 18:10:07 UTC 
SUSE-SU-2016:2528-1: An update that fixes 16 vulnerabilities is now available.

Category: security (important)
Bug References: 973188,974038,975130,975138,978164,978295,980716,980724,981264,982960,983984,988675,995785,995792
CVE References: CVE-2014-3615,CVE-2014-3672,CVE-2016-3158,CVE-2016-3159,CVE-2016-3710,CVE-2016-3960,CVE-2016-4001,CVE-2016-4002,CVE-2016-4439,CVE-2016-4441,CVE-2016-4480,CVE-2016-5238,CVE-2016-5338,CVE-2016-6258,CVE-2016-7092,CVE-2016-7094
Sources used:
SUSE Linux Enterprise Server 11-SP2-LTSS (src):    xen-4.1.6_08-29.1
Comment 10 Swamp Workflow Management 2016-10-13 19:15:00 UTC 
SUSE-SU-2016:2533-1: An update that solves 38 vulnerabilities and has 20 fixes is now available.

Category: security (important)
Bug References: 953339,953362,953518,954872,955399,957986,958848,961600,963161,964427,970135,971949,973188,973631,974038,975130,975138,975907,976058,976111,978164,978295,978413,979035,979620,979670,980716,980724,981264,981276,982024,982025,982026,982224,982225,982286,982695,982960,983973,983984,984981,985503,986586,988675,990843,990923,990970,991934,992224,994421,994625,994761,994772,994775,995785,995789,995792,997731
CVE References: CVE-2014-3615,CVE-2014-3672,CVE-2016-3158,CVE-2016-3159,CVE-2016-3710,CVE-2016-3712,CVE-2016-3960,CVE-2016-4001,CVE-2016-4002,CVE-2016-4020,CVE-2016-4037,CVE-2016-4439,CVE-2016-4441,CVE-2016-4453,CVE-2016-4454,CVE-2016-4480,CVE-2016-4952,CVE-2016-4962,CVE-2016-4963,CVE-2016-5105,CVE-2016-5106,CVE-2016-5107,CVE-2016-5126,CVE-2016-5238,CVE-2016-5337,CVE-2016-5338,CVE-2016-5403,CVE-2016-6258,CVE-2016-6351,CVE-2016-6833,CVE-2016-6834,CVE-2016-6835,CVE-2016-6836,CVE-2016-6888,CVE-2016-7092,CVE-2016-7093,CVE-2016-7094,CVE-2016-7154
Sources used:
SUSE Linux Enterprise Server for SAP 12 (src):    xen-4.4.4_04-22.22.2
SUSE Linux Enterprise Server 12-LTSS (src):    xen-4.4.4_04-22.22.2
Comment 11 Swamp Workflow Management 2016-11-04 14:14:28 UTC 
SUSE-SU-2016:2725-1: An update that solves 21 vulnerabilities and has four fixes is now available.

Category: security (important)
Bug References: 954872,961600,963161,973188,973631,974038,975130,975138,976470,978164,978295,978413,980716,980724,981264,982224,982225,982960,983984,985503,988675,990843,990923,995785,995792
CVE References: CVE-2014-3615,CVE-2014-3672,CVE-2016-3158,CVE-2016-3159,CVE-2016-3710,CVE-2016-3712,CVE-2016-3960,CVE-2016-4001,CVE-2016-4002,CVE-2016-4439,CVE-2016-4441,CVE-2016-4453,CVE-2016-4454,CVE-2016-4480,CVE-2016-5238,CVE-2016-5338,CVE-2016-5403,CVE-2016-6258,CVE-2016-6351,CVE-2016-7092,CVE-2016-7094
Sources used:
SUSE OpenStack Cloud 5 (src):    xen-4.2.5_21-27.1
SUSE Manager Proxy 2.1 (src):    xen-4.2.5_21-27.1
SUSE Manager 2.1 (src):    xen-4.2.5_21-27.1
SUSE Linux Enterprise Server 11-SP3-LTSS (src):    xen-4.2.5_21-27.1
SUSE Linux Enterprise Point of Sale 11-SP3 (src):    xen-4.2.5_21-27.1
Comment 12 Marcus Meissner 2016-12-22 11:54:59 UTC 
released