Access Restriction Bypass Affecting qemu-project/qemu package, versions [0,]


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-UNMANAGED-QEMUPROJECTQEMU-5750792
  • published3 Jul 2023
  • disclosed7 Jun 2023
  • creditYanwu Shen,Jietao Xiao,Jinku Li,Wenbo Shen

Introduced: 7 Jun 2023

CVE-2023-2861  (opens in a new tab)
CWE-284  (opens in a new tab)

How to fix?

A fix was pushed into the master branch but not yet published.

Overview

Affected versions of this package are vulnerable to Access Restriction Bypass when a malicious client attempts to create and open a device file on the host side. This is only exploitable in specific setups where the QEMU binary is run as root with the 9p 'local' fs driver and 'passthrough' security model, or when using the 9p 'proxy' fs driver with its helper daemon running as root. An attacker can potentially escape from the exported 9p tree.

NOTE: These setups are documented as discouraged by the developers, for safety reasons.

CVSS Scores

version 3.1