Improper Preservation of Permissions Affecting qemu package, versions *


Severity

Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-UBUNTU2004-QEMU-5798359
  • published21 Jul 2023
  • disclosed24 Jul 2023

Introduced: 21 Jul 2023

CVE-2023-1386  (opens in a new tab)
CWE-281  (opens in a new tab)

How to fix?

There is no fixed version for Ubuntu:20.04 qemu.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu package and not the qemu package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

A flaw was found in the 9p passthrough filesystem (9pfs) implementation in QEMU. When a local user in the guest writes an executable file with SUID or SGID, none of these privileged bits are correctly dropped. As a result, in rare circumstances, this flaw could be used by malicious users in the guest to elevate their privileges within the guest and help a host local user to elevate privileges on the host.

CVSS Scores

version 3.1