Bug 1443363 (CVE-2017-3450)

Summary:	CVE-2017-3450 mysql: Server: Memcached unspecified vulnerability (CPU Apr 2017)
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	aortega, apevec, ayoung, chrisw, cvsbot-xmlrpc, databases-maint, dciabrin, gmollett, hhorak, jjoyce, jorton, jschluet, jshepherd, jstanek, kbasil, lhh, lpeer, markmc, mbayer, mburns, mmuzila, mschorm, praiskup, rbryant, sclewis, slinaber, srevivo, tdecacqu
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	mysql 5.6.36, mysql 5.7.18	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-10-12 09:10:09 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1443407, 1445524, 1445525, 1445527, 1445528
Bug Blocks:	1443389

Description Adam Mariš 2017-04-19 07:19:54 UTC

Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Memcached). Supported versions that are affected are 5.6.35 and earlier and 5.7.17 and earlier. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. 

External References:

http://www.oracle.com/technetwork/security-advisory/cpuapr2017-3236618.html#AppendixMSQL

Comment 1 Adam Mariš 2017-04-19 08:13:20 UTC

Created community-mysql tracking bugs for this issue:

Affects: fedora-all [bug 1443407]

Comment 2 Tomas Hoger 2017-04-20 12:57:29 UTC

The only recent change to the innodb_memcached plugin is:

https://github.com/mysql/mysql-server/commit/659514dc83299a7d8c7defeb543be4339fbe1ee1

Also mentioned in the release notes:

  InnoDB: A memcached read operation with a non-default read batch size
  configuration resulted in a server exit. (Bug #25147515)

https://dev.mysql.com/doc/relnotes/mysql/5.7/en/news-5-7-18.html
https://dev.mysql.com/doc/relnotes/mysql/5.6/en/news-5-6-36.html

While Oracle CPU lists this as unauthenticated attack, attacker requires read access to the mysqld's memcached port.  MySQL documentation explicitly notes that only trusted users should be granted such access.

https://dev.mysql.com/doc/refman/5.7/en/innodb-memcached-security.html

Comment 5 errata-xmlrpc 2017-09-21 07:48:32 UTC

This issue has been addressed in the following products:

  Red Hat Software Collections for Red Hat Enterprise Linux 6
  Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 7
  Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS

Via RHSA-2017:2787 https://access.redhat.com/errata/RHSA-2017:2787

Comment 6 errata-xmlrpc 2017-10-12 08:00:11 UTC

This issue has been addressed in the following products:

  Red Hat Software Collections for Red Hat Enterprise Linux 6
  Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 7
  Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS

Via RHSA-2017:2886 https://access.redhat.com/errata/RHSA-2017:2886