Bug 1283926 (CVE-2015-8619)

Summary:	CVE-2015-8619 Qemu: hmp: stack based OOB write in hmp_sendkey routine
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	abaron, apevec, areis, ayoung, chrisw, dallan, gkotton, jen, jschluet, knoel, lhh, lpeer, markmc, mkenneth, mrezanin, mst, osoukup, pbonzini, ppandit, rbryant, sclewis, security-response-team, slong, srevivo, tdecacqu
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:	An out-of-bounds write vulnerability has been found in the QEMU emulator built with Human Monitor Interface(HMP) support. The issue occurs when the 'sendkey' command (in hmp_sendkey) is processed with a 'keyname_len' that is greater than the 'keyname_buf' array size. A user or process could exploit this flaw to crash the QEMU process instance (denial of service).	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 02:45:41 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:	1292757, 1292758
Bug Blocks:	1283937

Description Adam Mariš 2015-11-20 10:05:05 UTC

Qemu emulator built with the Human Monitor Interface(HMP) support is vulnerable to an OOB write issue. It occurs while processing 'sendkey' command in hmp_sendkey routine, if the command argument is longer than the 'keyname_buf' buffer size.

A user/process could use this flaw to crash the Qemu process instance resulting in DoS.

Upstream fix:
-------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg02160.html

Reference:
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  -> http://www.openwall.com/lists/oss-security/2015/12/23/1

Comment 3 Prasad Pandit 2015-12-18 09:49:20 UTC

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1292757]
Affects: epel-all [bug 1292758]

Comment 4 Prasad Pandit 2015-12-18 09:50:27 UTC

Statement: 

This issue does not affect the versions of the kvm and xen packages as shipped with Red Hat Enterprise Linux 5.

This issue does not affect the versions of the qemu-kvm packages as shipped with Red Hat Enterprise Linux 6, and the Red Hat Enterprise Linux 6 based versions of qemu-kvm-rhev packages as shipped with Red Hat Enterprise Virtualization 3.

This issue does not affect the versions of the qemu-kvm packages as shipped with Red Hat Enterprise Linux 7.

This issue affects the Red Hat Enterprise Linux 7 based versions of the qemu-kvm-rhev packages as shipped with Red Hat Enterprise Virtualization 3.

This has been rated as having Low security impact and is not currently
planned to be addressed in future updates. For additional information, refer
to the Red Hat Enterprise Linux Life Cycle:
https://access.redhat.com/support/policy/updates/errata/.

Comment 5 Fedora Update System 2016-02-21 12:58:26 UTC

qemu-2.4.1-7.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.

Comment 6 Fedora Update System 2016-02-21 16:19:04 UTC

qemu-2.4.1-7.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.

Comment 7 Fedora Update System 2016-02-21 16:25:04 UTC

qemu-2.4.1-7.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.

Comment 8 Fedora Update System 2016-02-25 08:51:26 UTC

qemu-2.3.1-12.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.