CVE-2019-6133 Race condition in n/a
Medium 6.7
Published
Updated
Check this codebase for CVE-2019-6133 and fix it if it is affected.
What it is: CVE-2019-6133 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 11 Jan 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2019-6133 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-2019-6133/ (Markdown: https://insights.sbomify.com/CVE-2019-6133/index.md)
Attackers can bypass authorization checks in PolicyKit due to a race condition in fork handling, leading to privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2019-6133?
CVE-2019-6133 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 11 Jan 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
In PolicyKit (aka polkit) 0.115, the "start time" protection mechanism can be bypassed because fork() is not atomic, and therefore authorization decisions are improperly cached. This is related to lack of uid checking in polkitbackend/polkitbackendinteractiveauthority.c.
Weakness: CWE-362
Which versions are affected by CVE-2019-6133?
It affects 9 products.
Linux distribution packages (40)
polkit Red Hat:enterprise_linux:6::client | All versions | 0:0.96-11.el6_10.1 |
polkit-debuginfo Red Hat:enterprise_linux:6::client | All versions | 0:0.96-11.el6_10.1 |
polkit-desktop-policy Red Hat:enterprise_linux:6::client | All versions | 0:0.96-11.el6_10.1 |
polkit-devel Red Hat:enterprise_linux:6::client | All versions | 0:0.96-11.el6_10.1 |
polkit-docs Red Hat:enterprise_linux:6::client | All versions | 0:0.96-11.el6_10.1 |
polkit Red Hat:enterprise_linux:6::computenode | All versions | 0:0.96-11.el6_10.1 |
polkit-debuginfo Red Hat:enterprise_linux:6::computenode | All versions | 0:0.96-11.el6_10.1 |
polkit-desktop-policy Red Hat:enterprise_linux:6::computenode | All versions | 0:0.96-11.el6_10.1 |
polkit-devel Red Hat:enterprise_linux:6::computenode | All versions | 0:0.96-11.el6_10.1 |
polkit-docs Red Hat:enterprise_linux:6::computenode | All versions | 0:0.96-11.el6_10.1 |
polkit Red Hat:enterprise_linux:6::server | All versions | 0:0.96-11.el6_10.1 |
polkit-debuginfo Red Hat:enterprise_linux:6::server | All versions | 0:0.96-11.el6_10.1 |
polkit-desktop-policy Red Hat:enterprise_linux:6::server | All versions | 0:0.96-11.el6_10.1 |
polkit-devel Red Hat:enterprise_linux:6::server | All versions | 0:0.96-11.el6_10.1 |
polkit-docs Red Hat:enterprise_linux:6::server | All versions | 0:0.96-11.el6_10.1 |
polkit Red Hat:enterprise_linux:6::workstation | All versions | 0:0.96-11.el6_10.1 |
polkit-debuginfo Red Hat:enterprise_linux:6::workstation | All versions | 0:0.96-11.el6_10.1 |
polkit-desktop-policy Red Hat:enterprise_linux:6::workstation | All versions | 0:0.96-11.el6_10.1 |
polkit-devel Red Hat:enterprise_linux:6::workstation | All versions | 0:0.96-11.el6_10.1 |
polkit-docs Red Hat:enterprise_linux:6::workstation | All versions | 0:0.96-11.el6_10.1 |
polkit Red Hat:enterprise_linux:7::client | All versions | 0:0.112-18.el7_6.1 |
polkit-debuginfo Red Hat:enterprise_linux:7::client | All versions | 0:0.112-18.el7_6.1 |
polkit-devel Red Hat:enterprise_linux:7::client | All versions | 0:0.112-18.el7_6.1 |
polkit-docs Red Hat:enterprise_linux:7::client | All versions | 0:0.112-18.el7_6.1 |
polkit Red Hat:enterprise_linux:7::computenode | All versions | 0:0.112-18.el7_6.1 |
polkit-debuginfo Red Hat:enterprise_linux:7::computenode | All versions | 0:0.112-18.el7_6.1 |
polkit-devel Red Hat:enterprise_linux:7::computenode | All versions | 0:0.112-18.el7_6.1 |
polkit-docs Red Hat:enterprise_linux:7::computenode | All versions | 0:0.112-18.el7_6.1 |
polkit Red Hat:enterprise_linux:7::server | All versions | 0:0.112-18.el7_6.1 |
polkit-debuginfo Red Hat:enterprise_linux:7::server | All versions | 0:0.112-18.el7_6.1 |
polkit-devel Red Hat:enterprise_linux:7::server | All versions | 0:0.112-18.el7_6.1 |
polkit-docs Red Hat:enterprise_linux:7::server | All versions | 0:0.112-18.el7_6.1 |
polkit Red Hat:enterprise_linux:7::workstation | All versions | 0:0.112-18.el7_6.1 |
polkit-debuginfo Red Hat:enterprise_linux:7::workstation | All versions | 0:0.112-18.el7_6.1 |
polkit-devel Red Hat:enterprise_linux:7::workstation | All versions | 0:0.112-18.el7_6.1 |
polkit-docs Red Hat:enterprise_linux:7::workstation | All versions | 0:0.112-18.el7_6.1 |
polkit Red Hat:rhel_aus:6.6::server | All versions | 0:0.96-7.el6_6.1 |
polkit-debuginfo Red Hat:rhel_aus:6.6::server | All versions | 0:0.96-7.el6_6.1 |
polkit-desktop-policy Red Hat:rhel_aus:6.6::server | All versions | 0:0.96-7.el6_6.1 |
polkit-devel Red Hat:rhel_aus:6.6::server | All versions | 0:0.96-7.el6_6.1 |
Products include Canonical Ubuntu Linux, Debian Debian Linux, Polkit Project Polkit, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus and 3 more.
How do I fix CVE-2019-6133?
Apply the vendor's patch.
Is CVE-2019-6133 being exploited?
There is no known exploitation of CVE-2019-6133 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as ALPINE-CVE-2019-6133, DEBIAN-CVE-2019-6133, GHSA-7j6c-jrh9-mvqm, RHSA-2019:0230, RHSA-2019:0420, RHSA-2019:0832 and 9 more.