Bug 1346349 (CVE-2016-7116)

Summary:	CVE-2016-7116 Qemu: 9p: directory traversal flaw in 9p virtio backend
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED CURRENTRELEASE	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	abaron, ailan, alonbl, anemec, aortega, apevec, areis, ayoung, bmcclain, chrisw, cvsbot-xmlrpc, dblechte, drjones, eedri, imammedo, jen, jjoyce, jschluet, kbasil, knoel, lhh, lpeer, markmc, mgoldboi, michal.skrivanek, mkenneth, mrezanin, mst, pbonzini, ppandit, rbalakri, rbryant, rkrcmar, sclewis, security-response-team, sherold, srevivo, tdecacqu, virt-maint, vkuznets, ykaul, ylavi
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:	2016-10-27 18:14:34 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:	1371399, 1371400
Bug Blocks:	1346351

Description Adam Mariš 2016-06-14 15:16:02 UTC

Quick Emulator(Qemu) built with the VirtFS, host directory sharing via Plan 9 File System(9pfs) support, is vulnerable to a directory/path traversal issue. It could occur while creating or accessing files on a shared host directory.

A privileged user inside guest could use this flaw to access undue files on the host.

Upstream patches:
-----------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2016-08/msg03917.html

Reference:
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  -> http://wiki.qemu.org/Documentation/9psetup
  -> http://www.openwall.com/lists/oss-security/2016/08/30/3

Comment 1 Adam Mariš 2016-06-14 15:16:22 UTC

Acknowledgments:

Name: Felix Wilhelm (ERNW)

Comment 3 Prasad Pandit 2016-08-30 06:41:44 UTC

*** Bug 1347350 has been marked as a duplicate of this bug. ***

Comment 4 Prasad Pandit 2016-08-30 07:12:26 UTC

Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1371400]

Comment 5 Prasad Pandit 2016-08-30 07:12:45 UTC

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1371399]