Bug 1340924 (CVE-2016-5126)

Summary:	CVE-2016-5126 Qemu: block: iscsi: buffer overflow in iscsi_aio_ioctl
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:	aortega, apevec, areis, ayoung, chrisw, cvsbot-xmlrpc, gmollett, jen, jschluet, kbasil, knoel, lhh, lpeer, markmc, mrezanin, mst, pbonzini, rbalakri, rbryant, sclewis, security-response-team, slong, srevivo, tdecacqu, virt-maint
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	Quick Emulator(QEMU) built with the Block driver for iSCSI images support (virtio-blk) is vulnerable to a heap-based buffer overflow issue. The flaw could occur while processing iSCSI asynchronous I/O ioctl(2) calls. A user inside a guest could exploit this flaw to crash the QEMU process resulting in denial of service, or potentially leverage it to execute arbitrary code with QEMU-process privileges on the host.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-12-15 04:35:30 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:	1340925, 1340929, 1340930, 1358996, 1358997, 1359743, 1359744, 1359745, 1359747, 1363573, 1363574
Bug Blocks:	1340774, 1366416

Description Prasad Pandit 2016-05-30 17:36:23 UTC

Quick Emulator(Qemu) built with the Block driver for iSCSI images support
(virtio-blk) is vulnerable to a heap buffer overflow flaw. It could occur
while processing iSCSI asynchronous I/O ioctl(2) calls.

A user inside guest could use this flaw to crash the Qemu process resulting
in DoS OR potentially leverage it to execute arbitrary code with privileges
of the Qemu process on the host.

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-block/2016-05/msg00779.html

Reference:
----------
  -> http://www.openwall.com/lists/oss-security/2016/05/30/6

Comment 1 Prasad Pandit 2016-05-30 17:38:28 UTC

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1340925]

Comment 5 Fedora Update System 2016-06-25 19:25:41 UTC

qemu-2.6.0-4.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.

Comment 10 errata-xmlrpc 2016-08-11 19:08:25 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2016:1606 https://rhn.redhat.com/errata/RHSA-2016-1606.html

Comment 11 errata-xmlrpc 2016-08-12 14:12:12 UTC

This issue has been addressed in the following products:

  RHEV-H and Agents for RHEL-7

Via RHSA-2016:1607 https://rhn.redhat.com/errata/RHSA-2016-1607.html

Comment 12 errata-xmlrpc 2016-08-23 06:14:53 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7

Via RHSA-2016:1655 https://rhn.redhat.com/errata/RHSA-2016-1655.html

Comment 13 errata-xmlrpc 2016-08-23 06:16:02 UTC

This issue has been addressed in the following products:

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

Via RHSA-2016:1654 https://rhn.redhat.com/errata/RHSA-2016-1654.html

Comment 14 errata-xmlrpc 2016-08-23 06:17:10 UTC

This issue has been addressed in the following products:

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

Via RHSA-2016:1653 https://rhn.redhat.com/errata/RHSA-2016-1653.html

Comment 15 errata-xmlrpc 2016-08-24 05:09:50 UTC

This issue has been addressed in the following products:

  Red Hat OpenStack Platform 8.0 (Liberty)

Via RHSA-2016:1756 https://rhn.redhat.com/errata/RHSA-2016-1756.html

Comment 16 errata-xmlrpc 2016-08-24 13:10:47 UTC

This issue has been addressed in the following products:

  Red Hat OpenStack Platform 9.0 (Mitaka)

Via RHSA-2016:1763 https://rhn.redhat.com/errata/RHSA-2016-1763.html