rbash in Bash before 4.4-beta2 did not prevent the shell user from modifying BASH_CMDS…
Priority LOW 34CWE-862Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 26 fixed, 2 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-862.
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.
Why it matters now
EPSS 0.00402 34th percentileScored 2026-11-07
Fix Partial Red Hat: 4 advisoriesRed Hat: 26 fixed, 2 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gnu:bash:*:*:*:*:*:*:*:* | before 4.4 | Vulnerable | GNU |
| cpe:2.3:a:gnu:bash:4.4:beta1:*:*:*:*:*:* | 4.4 beta1 | Vulnerable | GNU |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
| cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:* | 42.3 | Vulnerable | openSUSE |
| cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:* | 12.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* | 14.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* | 16.04 | Vulnerable | Canonical |
- cpe:2.3:a:gnu:bash:*:*:*:*:*:*:*:* Versions before 4.4 Vulnerable ·GNU
- cpe:2.3:a:gnu:bash:4.4:beta1:*:*:*:*:*:* Versions 4.4 beta1 Vulnerable ·GNU
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
- cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:* Versions 42.3 Vulnerable ·openSUSE
- cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:* Versions 12.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* Versions 14.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* Versions 16.04 Vulnerable ·Canonical
Remediation
Red Hat 4 advisories
- RHSA-2020:3803 Released 2020-09-22 · Red Hat rating Moderatebash security update
- 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
- Red Hat Enterprise Linux Server Optional AUS (v. 7.4) bash-doc-4.2.46-30.el7_4
- Red Hat Enterprise Linux Server Optional E4S (v. 7.4) bash-doc-4.2.46-30.el7_4
- Red Hat Enterprise Linux Server Optional TUS (v. 7.4) bash-doc-4.2.46-30.el7_4
- Red Hat Enterprise Linux Server TUS (v. 7.4) bash-4.2.46-30.el7_4
- RHSA-2020:3592 Released 2020-09-01 · Red Hat rating Moderatebash security update
- Red Hat Enterprise Linux ComputeNode EUS (v. 7.7) bash-4.2.46-34.el7_7
- Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7) bash-doc-4.2.46-34.el7_7
- Red Hat Enterprise Linux Server EUS (v. 7.7) bash-4.2.46-34.el7_7
- Red Hat Enterprise Linux Server Optional EUS (v. 7.7) bash-doc-4.2.46-34.el7_7
- RHSA-2020:3474 Released 2020-08-18 · Red Hat rating Moderatebash security update
- Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) bash-4.2.46-32.el7_6
- Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) bash-doc-4.2.46-32.el7_6
- Red Hat Enterprise Linux Server EUS (v. 7.6) bash-4.2.46-32.el7_6
- Red Hat Enterprise Linux Server Optional EUS (v. 7.6) bash-doc-4.2.46-32.el7_6
- 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
Show 1 more Red Hat advisories
- RHSA-2020:1113 Released 2020-03-31 · Red Hat rating Moderatebash security update
- 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
- Red Hat Enterprise Linux ComputeNode (v. 7) bash-4.2.46-34.el7
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) bash-doc-4.2.46-34.el7
- Red Hat Enterprise Linux Server (v. 7) bash-4.2.46-34.el7
- Red Hat Enterprise Linux Server Optional (v. 7) bash-doc-4.2.46-34.el7
- 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
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
| Red Hat Virtualization 4 | Affected | No fix planned: Will not fix |
| Red Hat Ansible Tower 3.5 for RHEL 7 Server | Fixed | — |
| Red Hat Ansible Tower 3.6 for RHEL 7 | Fixed | — |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2020:1113 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2020:1113 |
| Red Hat Enterprise Linux ComputeNode (v. 7) | Fixed | RHSA-2020:1113 |
| Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) | Fixed | RHSA-2020:3474 |
| Red Hat Enterprise Linux ComputeNode EUS (v. 7.7) | Fixed | RHSA-2020:3592 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2020:1113 |
| Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) | Fixed | RHSA-2020:3474 |
| Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7) | Fixed | RHSA-2020:3592 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2020:1113 |
| Red Hat Enterprise Linux Server AUS (v. 7.4) | Fixed | RHSA-2020:3803 |
| Red Hat Enterprise Linux Server E4S (v. 7.4) | Fixed | RHSA-2020:3803 |
| Red Hat Enterprise Linux Server EUS (v. 7.6) | Fixed | RHSA-2020:3474 |
| Red Hat Enterprise Linux Server EUS (v. 7.7) | Fixed | RHSA-2020:3592 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2020:1113 |
| Red Hat Enterprise Linux Server Optional AUS (v. 7.4) | Fixed | RHSA-2020:3803 |
| Red Hat Enterprise Linux Server Optional E4S (v. 7.4) | Fixed | RHSA-2020:3803 |
| Red Hat Enterprise Linux Server Optional EUS (v. 7.6) | Fixed | RHSA-2020:3474 |
| Red Hat Enterprise Linux Server Optional EUS (v. 7.7) | Fixed | RHSA-2020:3592 |
| Red Hat Enterprise Linux Server Optional TUS (v. 7.4) | Fixed | RHSA-2020:3803 |
| Red Hat Enterprise Linux Server TUS (v. 7.4) | Fixed | RHSA-2020:3803 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2020:1113 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2020:1113 |
| Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) | Fixed | RHSA-2020:3474 |
| Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) | Fixed | RHSA-2020:3474 |
Not affected: 2 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2019-9924
- 2026-10-03 Alias added: GHSA-56xr-5j9v-w2wh
References
Advisory 7
- 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
- [debian-lts-announce] 20190325 [SECURITY] [DLA 1726-1] bash security update
- openSUSE-SU-2019:1178
- https://security.netapp.com/advisory/ntap-20190411-0001/
- USN-4058-1
- USN-4058-2
Sources
- CVE-2019-9924 · CVE Program
- CVE-2019-9924 · NVD
- FIRST EPSS
- GHSA-56xr-5j9v-w2wh · GitHub Advisory Database · CC BY 4.0
- CVE-2019-9924 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences