CVE-2019-9924

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-03-22 · updated 2026-06-17
Weakness: CWE-862

Description

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.

Affected products

Canonical Ubuntu Linux: 12.04, 14.04, 16.04
Debian Linux: 8.0
GNU Bash: before 4.4; 4.4-beta1 — fixed in 4.4
NetApp Hci Management Node: all versions
NetApp Solidfire: all versions
openSUSE Leap: 42.3

How to fix

Upgrade to a fixed version: GNU Bash 4.4. Check the vendor advisory for mitigations.

References

http://git.savannah.gnu.org/cgit/bash.git/tree/CHANGES?h=bash-4.4-testing#n65
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00049.html
https://bugs.launchpad.net/ubuntu/+source/bash/+bug/1803441
https://lists.debian.org/debian-lts-announce/2019/03/msg00028.html
https://security.netapp.com/advisory/ntap-20190411-0001/
https://usn.ubuntu.com/4058-1/
https://usn.ubuntu.com/4058-2/
http://git.savannah.gnu.org/cgit/bash.git/tree/CHANGES?h=bash-4.4-testing#n65
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00049.html
https://bugs.launchpad.net/ubuntu/+source/bash/+bug/1803441
https://lists.debian.org/debian-lts-announce/2019/03/msg00028.html
https://security.netapp.com/advisory/ntap-20190411-0001/

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