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Bug 1451709 - (CVE-2017-7493) CVE-2017-7493 Qemu: 9pfs: guest privilege escalation in virtfs mapped-file mode
CVE-2017-7493 Qemu: 9pfs: guest privilege escalation in virtfs mapped-file mode
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20170516,repor...
: Security
Depends On: 1451711
Blocks: 1449496
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Reported: 2017-05-17 06:46 EDT by Prasad J Pandit
Modified: 2018-07-18 11:21 EDT (History)
37 users (show)

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Description Prasad J Pandit 2017-05-17 06:46:10 EDT 
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 virtfs metadata files in mapped-file security
mode.

A guest user could use this flaw to escalate their privileges inside guest.

Upstream patches:
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  -> https://lists.gnu.org/archive/html/qemu-devel/2017-05/msg03663.html

Reference:
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  -> http://www.openwall.com/lists/oss-security/2017/05/17/6
Comment 1 Prasad J Pandit 2017-05-17 06:47:05 EDT 
Acknowledgments:

Name: Leo Gaspard
Comment 2 Prasad J Pandit 2017-05-17 06:49:21 EDT 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1451711]
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