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 t
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.
- Published
- Mar 22, 2019
- Updated
- Jun 16, 2026
- EPSS
- 0.4% · 32th percentile
- CWE
- CWE-862
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Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 31 / 40 · 7.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.4%
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| gnu | bash | cpe:2.3:a:gnu:bash |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
| opensuse | leap | cpe:2.3:o:opensuse:leap |
| netapp | hci management node | cpe:2.3:a:netapp:hci_management_node |
| netapp | solidfire | cpe:2.3:a:netapp:solidfire |
| canonical | ubuntu linux | cpe:2.3:o:canonical:ubuntu_linux |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- canonical ubuntu linux12.04
- canonical ubuntu linux14.04
- canonical ubuntu linux16.04
- debian debian linux8.0
- gnu bashbefore 4.4
- gnu bash4.4
- netapp hci management nodeall versions
- netapp solidfireall versions
- opensuse leap42.3
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | bash | before 4.4-1 | 4.4-1 |
| Debian:8 | bash | before 4.3-11+deb8u2 | 4.3-11+deb8u2 |
| Red Hat:enterprise_linux:7::client | bash | before 0:4.2.46-34.el7 | 0:4.2.46-34.el7 |
| Red Hat:enterprise_linux:7::client | bash-debuginfo | before 0:4.2.46-34.el7 | 0:4.2.46-34.el7 |
| Red Hat:enterprise_linux:7::client | bash-doc | before 0:4.2.46-34.el7 | 0:4.2.46-34.el7 |
| Red Hat:rhel_aus:7.4::server | bash | before 0:4.2.46-30.el7_4 | 0:4.2.46-30.el7_4 |
| Red Hat:rhel_aus:7.4::server | bash-debuginfo | before 0:4.2.46-30.el7_4 | 0:4.2.46-30.el7_4 |
| Red Hat:rhel_aus:7.4::server | bash-doc | before 0:4.2.46-30.el7_4 | 0:4.2.46-30.el7_4 |
| Red Hat:rhel_eus:7.6::computenode | bash | before 0:4.2.46-32.el7_6 | 0:4.2.46-32.el7_6 |
| Red Hat:rhel_eus:7.6::computenode | bash-debuginfo | before 0:4.2.46-32.el7_6 | 0:4.2.46-32.el7_6 |
| Red Hat:rhel_eus:7.6::computenode | bash-doc | before 0:4.2.46-32.el7_6 | 0:4.2.46-32.el7_6 |
| Red Hat:rhel_eus:7.7::computenode | bash | before 0:4.2.46-34.el7_7 | 0:4.2.46-34.el7_7 |
| Red Hat:rhel_eus:7.7::computenode | bash-debuginfo | before 0:4.2.46-34.el7_7 | 0:4.2.46-34.el7_7 |
| Red Hat:rhel_eus:7.7::computenode | bash-doc | before 0:4.2.46-34.el7_7 | 0:4.2.46-34.el7_7 |
| SUSE:Linux Enterprise Desktop 12 SP3 | bash | before 4.3-83.23.1 | 4.3-83.23.1 |
| SUSE:Linux Enterprise Server for SAP Applications 12 SP1 | bash | before 4.2-83.3.1 | 4.2-83.3.1 |
Same product
gnu: all recordsOther highest-scoring records for the same primary product.
- CVE-2014-7169GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed function definitions in the values of environment variablKEV99Now
- CVE-2014-6271GNU Bash through 4.3 processes trailing strings after function definitions in the values of environment variables, which allows remote attacKEV99Now
- CVE-2014-6278GNU Bash through 4.3 bash43-026 does not properly parse function definitions in the values of environment variables, which allows remote attKEV95Now
- CVE-2014-7186The redirection implementation in parse.y in GNU Bash through 4.3 bash43-026 allows remote attackers to cause a denial of service (out-of-bo59Plan
- CVE-2014-6277GNU Bash through 4.3 bash43-026 does not properly parse function definitions in the values of environment variables, which allows remote att59Plan
- CVE-2014-7187Off-by-one error in the read_token_word function in parse.y in GNU Bash through 4.3 bash43-026 allows remote attackers to cause a denial of 58Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:bash | 4.4-1 · Debian:12 | Package registry (OSV) |
| red hat:bash | 0:4.2.46-34.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:bash-debuginfo | 0:4.2.46-34.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:bash-doc | 0:4.2.46-34.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| suse:bash | 4.3-83.23.1 · SUSE:Linux Enterprise Desktop 12 SP3 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-20-637 · Aug 25, 2020(IBM Ürünleri Güvenlik Güncellemesi)
- TR-20-571 · Aug 6, 2020(IBM Ürünleri Güvenlik Güncellemesi)
- TR-20-189 · Apr 1, 2020(Red Hat Enterprise Linux 7 Güvenlik Güncellemesi)
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-862 · Missing AuthorizationCVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- git.savannah.gnu.org/cgit/bash.git/tree/CHANGES?h=bash-4.4-testing#n65
- lists.opensuse.org/opensuse-security-announce/2019-04/msg00049.html
- bugs.launchpad.net/ubuntu/+source/bash/+bug/1803441
- lists.debian.org/debian-lts-announce/2019/03/msg00028.html
- security.netapp.com/advisory/ntap-20190411-0001/
- usn.ubuntu.com/4058-1/
- usn.ubuntu.com/4058-2/
Vendor advisories and official records. Exploit/PoC links are deliberately left out.