CVE-2019-9924 Security feature bypass in n/a
High 7.8
Published
Updated
Check this codebase for CVE-2019-9924 and fix it if it is affected.
What it is: CVE-2019-9924 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 22 Mar 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2019-9924 in the wild and no public exploit code.
Affected product: Canonical Ubuntu Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2019-9924/ (Markdown: https://insights.sbomify.com/CVE-2019-9924/index.md)
Attackers can bypass rbash restrictions by modifying BASH_CMDS to execute arbitrary commands with shell permissions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-9924?
CVE-2019-9924 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 22 Mar 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-862
Which versions are affected by CVE-2019-9924?
It affects 6 products.
Linux distribution packages (40)
bash Red Hat:enterprise_linux:7::client | All versions | 0:4.2.46-34.el7 |
bash-debuginfo Red Hat:enterprise_linux:7::client | All versions | 0:4.2.46-34.el7 |
bash-doc Red Hat:enterprise_linux:7::client | All versions | 0:4.2.46-34.el7 |
bash Red Hat:enterprise_linux:7::computenode | All versions | 0:4.2.46-34.el7 |
bash-debuginfo Red Hat:enterprise_linux:7::computenode | All versions | 0:4.2.46-34.el7 |
bash-doc Red Hat:enterprise_linux:7::computenode | All versions | 0:4.2.46-34.el7 |
bash Red Hat:enterprise_linux:7::server | All versions | 0:4.2.46-34.el7 |
bash-debuginfo Red Hat:enterprise_linux:7::server | All versions | 0:4.2.46-34.el7 |
bash-doc Red Hat:enterprise_linux:7::server | All versions | 0:4.2.46-34.el7 |
bash Red Hat:enterprise_linux:7::workstation | All versions | 0:4.2.46-34.el7 |
bash-debuginfo Red Hat:enterprise_linux:7::workstation | All versions | 0:4.2.46-34.el7 |
bash-doc Red Hat:enterprise_linux:7::workstation | All versions | 0:4.2.46-34.el7 |
bash Red Hat:rhel_aus:7.4::server | All versions | 0:4.2.46-30.el7_4 |
bash-debuginfo Red Hat:rhel_aus:7.4::server | All versions | 0:4.2.46-30.el7_4 |
bash-doc Red Hat:rhel_aus:7.4::server | All versions | 0:4.2.46-30.el7_4 |
bash Red Hat:rhel_e4s:7.4::server | All versions | 0:4.2.46-30.el7_4 |
bash-debuginfo Red Hat:rhel_e4s:7.4::server | All versions | 0:4.2.46-30.el7_4 |
bash-doc Red Hat:rhel_e4s:7.4::server | All versions | 0:4.2.46-30.el7_4 |
bash Red Hat:rhel_eus:7.6::computenode | All versions | 0:4.2.46-32.el7_6 |
bash-debuginfo Red Hat:rhel_eus:7.6::computenode | All versions | 0:4.2.46-32.el7_6 |
bash-doc Red Hat:rhel_eus:7.6::computenode | All versions | 0:4.2.46-32.el7_6 |
bash Red Hat:rhel_eus:7.6::server | All versions | 0:4.2.46-32.el7_6 |
bash-debuginfo Red Hat:rhel_eus:7.6::server | All versions | 0:4.2.46-32.el7_6 |
bash-doc Red Hat:rhel_eus:7.6::server | All versions | 0:4.2.46-32.el7_6 |
bash Red Hat:rhel_eus:7.7::computenode | All versions | 0:4.2.46-34.el7_7 |
bash-debuginfo Red Hat:rhel_eus:7.7::computenode | All versions | 0:4.2.46-34.el7_7 |
bash-doc Red Hat:rhel_eus:7.7::computenode | All versions | 0:4.2.46-34.el7_7 |
bash Red Hat:rhel_eus:7.7::server | All versions | 0:4.2.46-34.el7_7 |
bash-debuginfo Red Hat:rhel_eus:7.7::server | All versions | 0:4.2.46-34.el7_7 |
bash-doc Red Hat:rhel_eus:7.7::server | All versions | 0:4.2.46-34.el7_7 |
bash Red Hat:rhel_tus:7.4::server | All versions | 0:4.2.46-30.el7_4 |
bash-debuginfo Red Hat:rhel_tus:7.4::server | All versions | 0:4.2.46-30.el7_4 |
bash-doc Red Hat:rhel_tus:7.4::server | All versions | 0:4.2.46-30.el7_4 |
bash SUSE:Enterprise Storage 4 | All versions | 4.3-83.23.1 |
bash SUSE:Linux Enterprise Desktop 12 SP3 | All versions | 4.3-83.23.1 |
bash SUSE:Linux Enterprise Desktop 12 SP4 | All versions | 4.3-83.23.1 |
bash SUSE:Linux Enterprise Server 12 SP1-LTSS | All versions | 4.2-83.3.1 |
bash SUSE:Linux Enterprise Server 12 SP2-BCL | All versions | 4.3-83.23.1 |
bash SUSE:Linux Enterprise Server 12 SP2-LTSS | All versions | 4.3-83.23.1 |
bash SUSE:Linux Enterprise Server 12 SP3 | All versions | 4.3-83.23.1 |
Products include Canonical Ubuntu Linux, Debian Debian Linux, Gnu Bash, Netapp Hci Management Node, Netapp Solidfire, Opensuse Leap.
How do I fix CVE-2019-9924?
Upgrade to a fixed version.
Is CVE-2019-9924 being exploited?
There is no known exploitation of CVE-2019-9924 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as CLSA-2026-1777367927, CLSA-2026-1777446568, DEBIAN-CVE-2019-9924, GHSA-56xr-5j9v-w2wh, MGASA-2019-0163, RHSA-2020:1113 and 9 more.