Bug 1473622 (CVE-2017-7539)

Summary:	CVE-2017-7539 Qemu: qemu-nbd crashes due to undefined I/O coroutine
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	ailan, amit, apevec, areis, berrange, cfergeau, chrisw, cvsbot-xmlrpc, ddepaula, drjones, dwmw2, imammedo, itamar, jen, jjoyce, jschluet, kbasil, knoel, lhh, lpeer, markmc, m.a.young, mburns, mkenneth, mrezanin, mst, pbonzini, rbryant, rjones, rkrcmar, robinlee.sysu, sclewis, slinaber, slong, srevivo, tdecacqu, virt-maint, virt-maint, vkuznets, xen-maint
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:	An assertion-failure flaw was found in the Network Block Device (NBD) server's initial connection negotiation, where the I/O coroutine was undefined. This could crash the qemu-nbd server if a client sent unexpected data during connection negotiation. A remote user or process could use this flaw to crash the qemu-nbd server resulting in denial of service.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 03:17:20 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:	1467509, 1473624, 1473625, 1473627, 1473628, 1473629, 1473630, 1473631, 1473632, 1473633, 1473634, 1473638
Bug Blocks:	1472118, 1520687

Description Prasad Pandit 2017-07-21 10:31:30 UTC

Quick Emulator(Qemu) built with the Network Block Device(NBD) Server support
is vulnerable to a crash via assertion failure. It could occur if a client sent
undue data during initial connection negotiation.

A remote user/process could use this flaw to crash the qemu-nbd server
resulting in DoS.

Upstream patch:
---------------
  -> http://git.qemu.org/?p=qemu.git;a=commitdiff;h=2b0bbc4f8809c972bad134bc1a2570dbb01dea0b

Introduced by:
--------------
  -> http://git.qemu.org/?p=qemu.git;a=commitdiff;h=ff82911cd3f69f028f2537825c9720ff78bc3f19

Reference:
----------
  -> http://www.openwall.com/lists/oss-security/2017/07/21/4

Comment 1 Prasad Pandit 2017-07-21 10:33:16 UTC

Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1473625]

Comment 2 Prasad Pandit 2017-07-21 10:33:41 UTC

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1473624]

Comment 6 errata-xmlrpc 2017-09-05 11:53:49 UTC

This issue has been addressed in the following products:

  RHEV 3.X Hypervisor and Agents for RHEL-7
  RHEV 4.X RHEV-H and Agents for RHEL-7

Via RHSA-2017:2628 https://access.redhat.com/errata/RHSA-2017:2628

Comment 9 errata-xmlrpc 2017-12-14 22:15:44 UTC

This issue has been addressed in the following products:

  Red Hat OpenStack Platform 8.0 (Liberty)

Via RHSA-2017:3471 https://access.redhat.com/errata/RHSA-2017:3471

Comment 10 errata-xmlrpc 2017-12-14 22:17:50 UTC

This issue has been addressed in the following products:

  Red Hat OpenStack Platform 9.0 (Mitaka)

Via RHSA-2017:3470 https://access.redhat.com/errata/RHSA-2017:3470

Comment 11 errata-xmlrpc 2017-12-14 22:19:56 UTC

This issue has been addressed in the following products:

  Red Hat OpenStack Platform 11.0 (Ocata)

Via RHSA-2017:3466 https://access.redhat.com/errata/RHSA-2017:3466

Comment 12 errata-xmlrpc 2017-12-14 22:21:54 UTC

This issue has been addressed in the following products:

  Red Hat OpenStack Platform 10.0 (Newton)

Via RHSA-2017:3474 https://access.redhat.com/errata/RHSA-2017:3474

Comment 13 errata-xmlrpc 2017-12-14 22:23:47 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7

Via RHSA-2017:3472 https://access.redhat.com/errata/RHSA-2017:3472

Comment 14 errata-xmlrpc 2017-12-14 22:25:37 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7

Via RHSA-2017:3473 https://access.redhat.com/errata/RHSA-2017:3473