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CVE-2017-7493

Date: May 17, 2017

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.

Language: C

Severity Score

Related Resources (8)

https://nvd.nist.gov/vuln/detail/CVE-2017-7493
https://bugzilla.redhat.com/show_bug.cgi?id=1451709
https://lists.gnu.org/archive/html/qemu-devel/2017-05/msg03663.html
https://security.gentoo.org/glsa/201706-03
http://seclists.org/oss-sec/2017/q2/278
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
http://www.securityfocus.com/bid/98574
https://www.mend.io/vulnerability-database/CVE-2017-7493

Severity Score

Weakness Type (CWE)

Improper Access Control

CWE-284

Incorrect Permission Assignment for Critical Resource

CWE-732

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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