Bug 1443401 (CVE-2017-7471) - CVE-2017-7471 Qemu: 9p: virtfs allows guest to change filesystem attributes on host
Summary: CVE-2017-7471 Qemu: 9p: virtfs allows guest to change filesystem attributes o...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2017-7471
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1443403 1525813
Blocks: 1442934
TreeView+ depends on / blocked
 
Reported: 2017-04-19 07:59 UTC by Prasad Pandit
Modified: 2021-02-17 02:16 UTC (History)
37 users (show)

Fixed In Version:
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Last Closed: 2019-06-08 03:10:40 UTC
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Description Prasad Pandit 2017-04-19 07:59:46 UTC 
Quick Emulator(Qemu) built with the VirtFS, host directory sharing via Plan 9
File System(9pfs) support, is vulnerable to an improper access control issue.
It could occur while accessing files on a shared host directory.

A privileged user inside guest could use this flaw to access host file system
beyond the shared folder and potentially escalating their privileges on a host.

Upstream patches:
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  -> http://git.qemu-project.org/?p=qemu.git;a=commitdiff;h=9c6b899f7a46893ab3b671e341a2234e9c0c060e

Reference:
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  -> http://www.openwall.com/lists/oss-security/2017/04/19/2
Comment 1 Prasad Pandit 2017-04-19 08:00:42 UTC 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1443403]
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