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Fencer Vulns
high 7.8

CVE-2019-9924 json

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…

published 2019-03-22 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-19279

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 34%
public exploits
0
none known

Summary

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.

Patch / fix

  • gnu bash 4.4
  • bash Debian 14, Debian 13, Debian 12 4.4-1

debian advisories DEBIAN-CVE-2019-9924

  • bash Ubuntu 16.04 LTS 4.3-14ubuntu1.4
  • bash Ubuntu Pro 14.04 LTS 4.3-7ubuntu1.8+esm1

ubuntu advisories UBUNTU-CVE-2019-9924

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • bash RHEL 7 4.2.46-34.el7
  • bash RHEL 7.4 TUS, RHEL 7.4 E4S, RHEL 7.4 AUS 4.2.46-30.el7_4
  • bash RHEL 7.7 EUS 4.2.46-34.el7_7
  • bash RHEL 7.6 EUS 4.2.46-32.el7_6

red hat advisories RHSA-2020:3803RHSA-2020:3592RHSA-2020:3474RHSA-2020:1113

  • bash SLES 12 SP4, SLES 12 SP3, SLES 12 SP2-BCL +12 more 4.3-83.23.1
  • bash SLES for SAP 12 SP1, SLES 12-LTSS, SLES 12 SP1-LTSS 4.2-83.3.1

suse advisories SUSE-SU-2019:0838-2SUSE-SU-2019:0898-1SUSE-SU-2019:0838-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-9924 updated cvss 7.8

bash: BASH_CMD is writable in restricted bash shells

  • Red Hat Enterprise Linux 6 bash Red Hat Virtualization 4 rhvm-appliance, redhat-virtualization-host-image-update
    affected: no fix planned “Will not fix”
  • Red Hat Ansible Tower 3.5 for RHEL 7 Server ansible-tower-35/ansible-tower 3.5.6-1
    fixed: vendor fix RHBA-2020:1539
  • Red Hat Ansible Tower 3.6 for RHEL 7 ansible-tower-36/ansible-tower 3.6.4-1
    fixed: vendor fix RHBA-2020:1540
  • Red Hat Enterprise Linux Client (v. 7) bash 4.2.46-34.el7 Red Hat Enterprise Linux Client Optional (v. 7) bash-doc 4.2.46-34.el7, bash-debuginfo 4.2.46-34.el7 Red Hat Enterprise Linux ComputeNode (v. 7) bash 4.2.46-34.el7
    fixed: vendor fix RHSA-2020:1113
  • Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) bash 4.2.46-32.el7_6
    fixed: vendor fix RHSA-2020:3474
  • Red Hat Enterprise Linux ComputeNode EUS (v. 7.7) bash 4.2.46-34.el7_7
    fixed: vendor fix RHSA-2020:3592
  • Red Hat Enterprise Linux ComputeNode Optional (v. 7) bash-doc 4.2.46-34.el7, bash-debuginfo 4.2.46-34.el7
    fixed: vendor fix RHSA-2020:1113
  • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) bash-doc 4.2.46-32.el7_6, bash-debuginfo 4.2.46-32.el7_6
    fixed: vendor fix RHSA-2020:3474
show 13 more
  • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7) bash-doc 4.2.46-34.el7_7, bash-debuginfo 4.2.46-34.el7_7
    fixed: vendor fix RHSA-2020:3592
  • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) bash 4.2.46-32.el7_6 Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) bash-doc 4.2.46-32.el7_6, bash-debuginfo 4.2.46-32.el7_6
    fixed: vendor fix RHSA-2020:3474
  • Red Hat Enterprise Linux Server (v. 7) bash 4.2.46-34.el7
    fixed: vendor fix RHSA-2020:1113
  • Red Hat Enterprise Linux Server AUS (v. 7.4) bash 4.2.46-30.el7_4 Red Hat Enterprise Linux Server E4S (v. 7.4) bash 4.2.46-30.el7_4
    fixed: vendor fix RHSA-2020:3803
  • Red Hat Enterprise Linux Server EUS (v. 7.6) bash 4.2.46-32.el7_6
    fixed: vendor fix RHSA-2020:3474
  • Red Hat Enterprise Linux Server EUS (v. 7.7) bash 4.2.46-34.el7_7
    fixed: vendor fix RHSA-2020:3592
  • Red Hat Enterprise Linux Server Optional (v. 7) bash-doc 4.2.46-34.el7, bash-debuginfo 4.2.46-34.el7
    fixed: vendor fix RHSA-2020:1113
  • Red Hat Enterprise Linux Server Optional AUS (v. 7.4) bash-doc 4.2.46-30.el7_4, bash-debuginfo 4.2.46-30.el7_4 Red Hat Enterprise Linux Server Optional E4S (v. 7.4) bash-doc 4.2.46-30.el7_4, bash-debuginfo 4.2.46-30.el7_4
    fixed: vendor fix RHSA-2020:3803
  • Red Hat Enterprise Linux Server Optional EUS (v. 7.6) bash-doc 4.2.46-32.el7_6, bash-debuginfo 4.2.46-32.el7_6
    fixed: vendor fix RHSA-2020:3474
  • Red Hat Enterprise Linux Server Optional EUS (v. 7.7) bash-doc 4.2.46-34.el7_7, bash-debuginfo 4.2.46-34.el7_7
    fixed: vendor fix RHSA-2020:3592
  • Red Hat Enterprise Linux Server Optional TUS (v. 7.4) bash-doc 4.2.46-30.el7_4, bash-debuginfo 4.2.46-30.el7_4 Red Hat Enterprise Linux Server TUS (v. 7.4) bash 4.2.46-30.el7_4
    fixed: vendor fix RHSA-2020:3803
  • Red Hat Enterprise Linux Workstation (v. 7) bash 4.2.46-34.el7 Red Hat Enterprise Linux Workstation Optional (v. 7) bash-doc 4.2.46-34.el7, bash-debuginfo 4.2.46-34.el7
    fixed: vendor fix RHSA-2020:1113
  • Red Hat Enterprise Linux 5 bash Red Hat Enterprise Linux 8 bash
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.40% chance of exploitation in the next 30 days, higher than 34% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.