CVE Catalog

CVE-2017-7493

High
Published: Translated: NVD NIST

Summary

Quick Emulator (Qemu) with VirtFS support and host directory sharing via Plan 9 File System (9pfs) has an access control vulnerability. This issue can occur when accessing virtfs metadata files in mapped-file security mode, allowing a guest user to escalate their privileges inside the guest.

Risk Assessment

This vulnerability could lead to unauthorized privilege escalation by guest users, posing a significant security risk to the virtualization system.

Recommendation

It is recommended to update Qemu to the latest version to mitigate this vulnerability and review the access policy for virtfs metadata files.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS