Bug 1472611 (CVE-2017-11434)

Summary:	CVE-2017-11434 Qemu: slirp: out-of-bounds read while parsing dhcp options
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	ailan, amit, apevec, areis, ayoung, berrange, cfergeau, chrisw, cvsbot-xmlrpc, ddepaula, drjones, dwmw2, imammedo, itamar, jen, jjoyce, jschluet, kbasil, knoel, lhh, lpeer, markmc, m.a.young, mkenneth, mrezanin, mst, pbonzini, rbryant, rjones, rkrcmar, robinlee.sysu, sclewis, 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:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 03:16:51 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:	1472612
Bug Blocks:	1449502

Description Prasad Pandit 2017-07-19 06:13:14 UTC

Quick emulator(Qemu) built with the BOOTP/DHCP Server support is vulnerable
to an OOB read issue. It could occur while parsing the DHCP options and vendor
extensions options sent by a client.

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

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2017-07/msg05001.html

Reference:
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  -> http://www.openwall.com/lists/oss-security/2017/07/19/2

Comment 1 Prasad Pandit 2017-07-19 06:13:45 UTC

Acknowledgments:

Name: Reno Robert

Comment 2 Prasad Pandit 2017-07-19 06:17:23 UTC

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1472612]

Comment 3 Fedora Update System 2017-11-07 22:14:24 UTC

qemu-2.9.1-2.fc26 has been pushed to the Fedora 26 stable repository. If problems still persist, please make note of it in this bug report.