Rapid7 Vulnerability & Exploit Database

Gentoo Linux: CVE-2021-20263: QEMU: Multiple Vulnerabilities

Back to Search

Gentoo Linux: CVE-2021-20263: QEMU: Multiple Vulnerabilities

Severity
2
CVSS
(AV:L/AC:L/Au:N/C:N/I:P/A:N)
Published
03/09/2021
Created
08/29/2022
Added
08/16/2022
Modified
08/16/2022

Description

A flaw was found in the virtio-fs shared file system daemon (virtiofsd) of QEMU. The new 'xattrmap' option may cause the 'security.capability' xattr in the guest to not drop on file write, potentially leading to a modified, privileged executable in the guest. In rare circumstances, this flaw could be used by a malicious user to elevate their privileges within the guest.

Solution(s)

  • gentoo-linux-upgrade-app-emulation-qemu

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;