rbash in Bash before 4.4-beta2 did not prevent the shell user from modifying BASH_CMDS, thus allowing the user to execute any command with the permissions of the shell.
https://bugs.launchpad.net/ubuntu/+source/bash/+bug/1803441
http://git.savannah.gnu.org/cgit/bash.git/tree/CHANGES?h=bash-4.4-testing#n65
https://lists.debian.org/debian-lts-announce/2019/03/msg00028.html
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00049.html
https://security.netapp.com/advisory/ntap-20190411-0001/
Source: MITRE
Published: 2019-03-22
Updated: 2022-04-05
Type: CWE-862
Base Score: 7.2
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C
Impact Score: 10
Exploitability Score: 3.9
Severity: HIGH
Base Score: 7.8
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 1.8
Severity: HIGH