Bug 1087440 – VUL-1: CVE-2018-8779: ruby19,ruby,ruby2.1: Unintentional socket creation by poisoned NUL byte in UNIXServer and UNIXSocket

Bug 1087440 - (CVE-2018-8779) VUL-1: CVE-2018-8779: ruby19,ruby,ruby2.1: Unintentional socket creation by poisoned NUL byte in UNIXServer and UNIXSocket

(CVE-2018-8779)
Summary:	VUL-1: CVE-2018-8779: ruby19,ruby,ruby2.1: Unintentional socket creation by p...

Status:	NEW

Classification:	Novell Products
Product:	SUSE Security Incidents
Classification:	Novell Products
Component:	Incidents
Version:	unspecified
Hardware:	Other Other

Priority:	P4 - Low Severity: Minor
Target Milestone:	---
Assigned To:	Security Team bot
QA Contact:	Security Team bot

URL:	https://smash.suse.de/issue/202908/
Whiteboard:	CVSSv3:SUSE:CVE-2018-8779:3.7:(AV:N/A...
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Reported:	2018-03-29 11:40 UTC by Marcus Meissner
Modified:	2020-10-21 09:21 UTC (History)
CC List:	2 users (show)

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Found By:	Security Response Team
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Description Marcus Meissner 2018-03-29 11:40:57 UTC

https://www.ruby-lang.org/en/news/2018/03/28/poisoned-nul-byte-unixsocket-cve-2018-8779/

CVE-2018-8779: Unintentional socket creation by poisoned NUL byte in UNIXServer and UNIXSocket

Posted by usa on 28 Mar 2018

There is a unintentional socket creation vulnerability in UNIXServer.open method of socket library bundled with Ruby. And there is also a unintentional socket access vulnerability in UNIXSocket.open method. This vulnerability has been assigned the CVE identifier CVE-2018-8779.
Details

UNIXServer.open accepts the path of the socket to be created at the first parameter. If the path contains NUL (\0) bytes, this method recognize that the path is completed before the NUL bytes. So, if a script accepts an external input as the argument of this method, the attacker can make the socket file in the unintentional path. And, UNIXSocket.open also accepts the path of the socket to be created at the first parameter without checking NUL bytes like UNIXServer.open. So, if a script accepts an external input as the argument of this method, the attacker can accepts the socket file in the unintentional path.

All users running an affected release should upgrade immediately.
Affected Versions

Ruby 2.2 series: 2.2.9 and earlier
Ruby 2.3 series: 2.3.6 and earlier
Ruby 2.4 series: 2.4.3 and earlier
Ruby 2.5 series: 2.5.0 and earlier
Ruby 2.6 series: 2.6.0-preview1
prior to trunk revision r62991

Credit

Thanks to ooooooo_q for reporting the issue.
History

Originally published at 2018-03-28 14:00:00 (UTC)

Comment 4 Swamp Workflow Management 2019-07-10 13:13:42 UTC

SUSE-SU-2019:1804-1: An update that solves 21 vulnerabilities and has two fixes is now available.

Category: security (important)
Bug References: 1082007,1082008,1082009,1082010,1082011,1082014,1082058,1087433,1087434,1087436,1087437,1087440,1087441,1112530,1112532,1130028,1130611,1130617,1130620,1130622,1130623,1130627,1133790
CVE References: CVE-2017-17742,CVE-2018-1000073,CVE-2018-1000074,CVE-2018-1000075,CVE-2018-1000076,CVE-2018-1000077,CVE-2018-1000078,CVE-2018-1000079,CVE-2018-16395,CVE-2018-16396,CVE-2018-6914,CVE-2018-8777,CVE-2018-8778,CVE-2018-8779,CVE-2018-8780,CVE-2019-8320,CVE-2019-8321,CVE-2019-8322,CVE-2019-8323,CVE-2019-8324,CVE-2019-8325
Sources used:
SUSE Linux Enterprise Module for Open Buildservice Development Tools 15-SP1 (src):    ruby2.5-2.5.5-4.3.1
SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 (src):    ruby2.5-2.5.5-4.3.1
SUSE Linux Enterprise Module for Basesystem 15-SP1 (src):    ruby2.5-2.5.5-4.3.1
SUSE Linux Enterprise Module for Basesystem 15 (src):    ruby2.5-2.5.5-4.3.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.

Comment 5 Swamp Workflow Management 2019-07-21 10:22:49 UTC

openSUSE-SU-2019:1771-1: An update that solves 21 vulnerabilities and has two fixes is now available.

Category: security (important)
Bug References: 1082007,1082008,1082009,1082010,1082011,1082014,1082058,1087433,1087434,1087436,1087437,1087440,1087441,1112530,1112532,1130028,1130611,1130617,1130620,1130622,1130623,1130627,1133790
CVE References: CVE-2017-17742,CVE-2018-1000073,CVE-2018-1000074,CVE-2018-1000075,CVE-2018-1000076,CVE-2018-1000077,CVE-2018-1000078,CVE-2018-1000079,CVE-2018-16395,CVE-2018-16396,CVE-2018-6914,CVE-2018-8777,CVE-2018-8778,CVE-2018-8779,CVE-2018-8780,CVE-2019-8320,CVE-2019-8321,CVE-2019-8322,CVE-2019-8323,CVE-2019-8324,CVE-2019-8325
Sources used:
openSUSE Leap 15.1 (src):    ruby-bundled-gems-rpmhelper-0.0.2-lp151.2.1, ruby2.5-2.5.5-lp151.4.3.1
openSUSE Leap 15.0 (src):    ruby-bundled-gems-rpmhelper-0.0.2-lp150.2.1, ruby2.5-2.5.5-lp150.3.3.1

Comment 7 Swamp Workflow Management 2020-06-09 13:22:44 UTC

SUSE-SU-2020:1570-1: An update that fixes 42 vulnerabilities is now available.

Category: security (important)
Bug References: 1043983,1048072,1055265,1056286,1056782,1058754,1058755,1058757,1062452,1069607,1069632,1073002,1078782,1082007,1082008,1082009,1082010,1082011,1082014,1082058,1087433,1087434,1087436,1087437,1087440,1087441,1112530,1112532,1130611,1130617,1130620,1130622,1130623,1130627,1152990,1152992,1152994,1152995,1171517,1172275
CVE References: CVE-2015-9096,CVE-2016-2339,CVE-2016-7798,CVE-2017-0898,CVE-2017-0899,CVE-2017-0900,CVE-2017-0901,CVE-2017-0902,CVE-2017-0903,CVE-2017-10784,CVE-2017-14033,CVE-2017-14064,CVE-2017-17405,CVE-2017-17742,CVE-2017-17790,CVE-2017-9228,CVE-2017-9229,CVE-2018-1000073,CVE-2018-1000074,CVE-2018-1000075,CVE-2018-1000076,CVE-2018-1000077,CVE-2018-1000078,CVE-2018-1000079,CVE-2018-16395,CVE-2018-16396,CVE-2018-6914,CVE-2018-8777,CVE-2018-8778,CVE-2018-8779,CVE-2018-8780,CVE-2019-15845,CVE-2019-16201,CVE-2019-16254,CVE-2019-16255,CVE-2019-8320,CVE-2019-8321,CVE-2019-8322,CVE-2019-8323,CVE-2019-8324,CVE-2019-8325,CVE-2020-10663
Sources used:
SUSE OpenStack Cloud Crowbar 8 (src):    ruby2.1-2.1.9-19.3.2
SUSE OpenStack Cloud 8 (src):    ruby2.1-2.1.9-19.3.2
SUSE OpenStack Cloud 7 (src):    ruby2.1-2.1.9-19.3.2, yast2-ruby-bindings-3.1.53-9.8.1
SUSE Linux Enterprise Software Development Kit 12-SP5 (src):    ruby2.1-2.1.9-19.3.2
SUSE Linux Enterprise Software Development Kit 12-SP4 (src):    ruby2.1-2.1.9-19.3.2
SUSE Linux Enterprise Server for SAP 12-SP3 (src):    ruby2.1-2.1.9-19.3.2
SUSE Linux Enterprise Server for SAP 12-SP2 (src):    ruby2.1-2.1.9-19.3.2, yast2-ruby-bindings-3.1.53-9.8.1
SUSE Linux Enterprise Server 12-SP5 (src):    ruby2.1-2.1.9-19.3.2
SUSE Linux Enterprise Server 12-SP4 (src):    ruby2.1-2.1.9-19.3.2
SUSE Linux Enterprise Server 12-SP3-LTSS (src):    ruby2.1-2.1.9-19.3.2
SUSE Linux Enterprise Server 12-SP3-BCL (src):    ruby2.1-2.1.9-19.3.2
SUSE Linux Enterprise Server 12-SP2-LTSS (src):    ruby2.1-2.1.9-19.3.2, yast2-ruby-bindings-3.1.53-9.8.1
SUSE Linux Enterprise Server 12-SP2-BCL (src):    ruby2.1-2.1.9-19.3.2, yast2-ruby-bindings-3.1.53-9.8.1
SUSE Enterprise Storage 5 (src):    ruby2.1-2.1.9-19.3.2
HPE Helion Openstack 8 (src):    ruby2.1-2.1.9-19.3.2

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.