CVE-2021-41089CWE-281

`docker cp` allows unexpected chmod of host files

Low · published October 4, 2021

CVSS v3.1
2.8
EPSS
0%
Percentile
20.4
In the wild
Unconfirmed
What it is

Moby is an open-source project created by Docker to enable software containerization. A bug was found in Moby (Docker Engine) where attempting to copy files using `docker cp` into a specially-crafted container can result in Unix file permission changes for existing files in the host’s filesystem, widening access to others. This bug does not directly allow files to be read, modified, or executed without an additional cooperating process. This bug has been fixed in Moby (Docker Engine) 20.10.9. Users should update to this version as soon as possible. Running containers do not need to be restarted.

The record
Technical detail
CVSS v3.1
2.8 · LOW
Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00290 · 20.4th percentile
Weakness
CWE-281 · Improper Preservation of Permissions
Published
2021-10-04T20:20Z
EPSS history
Timeline
  • 04 OCT 20:20Z
    `docker cp` allows unexpected chmod of host files
    cvelistv5