oss-security - CVE request: Qemu: 9p: directory traversal flaw in 9p virtio backend

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Date: Tue, 30 Aug 2016 12:45:44 +0530 (IST)
From: P J P <ppandit@...hat.com>
To: oss security list <oss-security@...ts.openwall.com>
cc: Felix Wilhelm <fwilhelm@...w.de>
Subject: CVE request: Qemu: 9p: directory traversal flaw in 9p virtio
 backend

   Hello,

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:
----------
   -> http://wiki.qemu.org/Documentation/9psetup

This flaw was reported by Mr Felix Wilhelm.

Thank you.
--
Prasad J Pandit / Red Hat Product Security Team
47AF CE69 3A90 54AA 9045 1053 DD13 3D32 FE5B 041F

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