CVE-2017-7471
CRITICAL severity · CVSS 9 · Incorrect permission assignment
9CVSS CRITICAL
Summary
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.
Impact & exploitability
Attack vectorAdjacent
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)1%
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: http://www.openwall.com/lists/oss-security/2017/04/19/2 ↗
Additional information
- NVD record
- http://www.openwall.com/lists/oss-security/2017/04/19/2Patch
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7471Patch
- http://www.securityfocus.com/bid/97970Advisory
- https://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=9c6b899f7a46893ab3b671e341a2234e9c0c060e
- https://security.gentoo.org/glsa/201706-03Advisory