Vulnerability Details : CVE-2017-7471
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.
Products affected by CVE-2017-7471
- cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
- cpe:2.3:a:qemu:qemu:2.9.0:rc0:*:*:*:*:*:*
- cpe:2.3:a:qemu:qemu:2.9.0:rc1:*:*:*:*:*:*
- cpe:2.3:a:qemu:qemu:2.9.0:rc2:*:*:*:*:*:*
- cpe:2.3:a:qemu:qemu:2.9.0:rc3:*:*:*:*:*:*
- cpe:2.3:a:qemu:qemu:2.9.0:rc4:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-7471
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 25 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-7471
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.7
|
HIGH | AV:A/AC:L/Au:S/C:C/I:C/A:C |
5.1
|
10.0
|
NIST | |
|
9.0
|
CRITICAL | CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
2.3
|
6.0
|
NIST |
CWE ids for CVE-2017-7471
-
The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-7471
-
http://www.openwall.com/lists/oss-security/2017/04/19/2
oss-security - CVE-2017-7471 Qemu: 9p: virtfs allows guest to change filesystem attributes on hostMailing List;Patch;Third Party Advisory
-
http://www.securityfocus.com/bid/97970
QEMU 'hw/9pfs/9p-local.c' Privilege Escalation VulnerabilityThird Party Advisory;VDB Entry
-
https://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=9c6b899f7a46893ab3b671e341a2234e9c0c060e
QEMU · GitLab
-
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7471
1443401 – (CVE-2017-7471) CVE-2017-7471 Qemu: 9p: virtfs allows guest to change filesystem attributes on hostIssue Tracking;Patch;Third Party Advisory
-
https://security.gentoo.org/glsa/201706-03
QEMU: Multiple vulnerabilities (GLSA 201706-03) — Gentoo securityThird Party Advisory
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