Bug 1423358 (CVE-2017-6058)

Summary:	CVE-2017-6058 Qemu: net: vmxnet3: OOB NetRxPkt::ehdr_buf access when doing vlan stripping
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	ailan, amit, apevec, areis, ayoung, berrange, cfergeau, chrisw, cvsbot-xmlrpc, drjones, dwmw2, imammedo, itamar, jen, jjoyce, jschluet, kbasil, knoel, lhh, lpeer, markmc, m.a.young, mkenneth, mrezanin, mst, pbonzini, rbryant, rjones, rkrcmar, 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 03:07:52 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:	1423359
Bug Blocks:	1419631

Description Prasad Pandit 2017-02-17 05:50:41 UTC

Quick Emulator(Qemu) built with the VMWARE VMXNET3 NIC device support
is vulnerable to an out-of-bounds access issue. It could occur while
stripping VLAN header from 'eth_buf' buffer in receiving packets.

A remote user/process could use this issue to crash Qemu process instance
resulting in DoS.

Note:- It requires 'VLANSTRIP' feature is enabled on the vmxnet3 device.

Upstream patch:
---------------
  -> https://lists.nongnu.org/archive/html/qemu-devel/2017-02/msg03527.html

Reference:
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  -> http://www.openwall.com/lists/oss-security/2017/02/17/2

Comment 1 Prasad Pandit 2017-02-17 05:55:02 UTC

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1423359]