CVE-2021-20263CWE-281

A flaw was found in the virtio-fs shared file system daemon (virtiofsd) of QEMU

published March 9, 2021

CVSS
—
EPSS
0%
Percentile
30.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00377 · 30.4th percentile
Weakness
CWE-281 · Improper Preservation of Permissions
Published
2021-03-09T17:17Z
EPSS history
Timeline
  • 09 MAR 17:17Z
    A flaw was found in the virtio-fs shared file system daemon (virtiofsd) of QEMU
    cvelistv5