CVE-2020-25654 Auth bypass in pacemaker
High 7.2
Published
Updated
Check this codebase for CVE-2020-25654 and fix it if it is affected.
What it is: CVE-2020-25654 is a high-severity authentication bypass vulnerability in Debian Debian Linux, published on 24 Nov 2020. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-25654 in the wild and no public exploit code.
Affected product: Debian Debian 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-2020-25654/ (Markdown: https://insights.sbomify.com/CVE-2020-25654/index.md)
Local attackers in the haclient group can bypass ACLs via IPC to perform restricted cluster tasks, requiring patching of Pacemaker.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-25654?
CVE-2020-25654 is a high-severity authentication bypass vulnerability in Debian Debian Linux, published on 24 Nov 2020. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
An ACL bypass flaw was found in pacemaker. An attacker having a local account on the cluster and in the haclient group could use IPC communication with various daemons directly to perform certain tasks that they would be prevented by ACLs from doing if they went through the configuration.
Weakness: CWE-284
Which versions are affected by CVE-2020-25654?
It affects 2 products.
Linux distribution packages (40)
pacemaker AlmaLinux:8 | All versions | 2.0.4-6.el8_3.1 |
pacemaker-cli AlmaLinux:8 | All versions | 2.0.4-6.el8_3.1 |
pacemaker-cts AlmaLinux:8 | All versions | 2.0.4-6.el8_3.1 |
pacemaker-doc AlmaLinux:8 | All versions | 2.0.4-6.el8_3.1 |
pacemaker-libs-devel AlmaLinux:8 | All versions | 2.0.4-6.el8_3.1 |
pacemaker-nagios-plugins-metadata AlmaLinux:8 | All versions | 2.0.4-6.el8_3.1 |
pacemaker-remote AlmaLinux:8 | All versions | 2.0.4-6.el8_3.1 |
pacemaker Red Hat:enterprise_linux:7::server | All versions | 0:1.1.23-1.el7_9.1 |
pacemaker-cli Red Hat:enterprise_linux:7::server | All versions | 0:1.1.23-1.el7_9.1 |
pacemaker-cluster-libs Red Hat:enterprise_linux:7::server | All versions | 0:1.1.23-1.el7_9.1 |
pacemaker-cts Red Hat:enterprise_linux:7::server | All versions | 0:1.1.23-1.el7_9.1 |
pacemaker-debuginfo Red Hat:enterprise_linux:7::server | All versions | 0:1.1.23-1.el7_9.1 |
pacemaker-doc Red Hat:enterprise_linux:7::server | All versions | 0:1.1.23-1.el7_9.1 |
pacemaker-libs Red Hat:enterprise_linux:7::server | All versions | 0:1.1.23-1.el7_9.1 |
pacemaker-libs-devel Red Hat:enterprise_linux:7::server | All versions | 0:1.1.23-1.el7_9.1 |
pacemaker-nagios-plugins-metadata Red Hat:enterprise_linux:7::server | All versions | 0:1.1.23-1.el7_9.1 |
pacemaker-remote Red Hat:enterprise_linux:7::server | All versions | 0:1.1.23-1.el7_9.1 |
pacemaker Red Hat:enterprise_linux:8::appstream | All versions | 0:2.0.4-6.el8_3.1 |
pacemaker-cli-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.0.4-6.el8_3.1 |
pacemaker-cluster-libs Red Hat:enterprise_linux:8::appstream | All versions | 0:2.0.4-6.el8_3.1 |
pacemaker-cluster-libs-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.0.4-6.el8_3.1 |
pacemaker-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.0.4-6.el8_3.1 |
pacemaker-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 0:2.0.4-6.el8_3.1 |
pacemaker-libs Red Hat:enterprise_linux:8::appstream | All versions | 0:2.0.4-6.el8_3.1 |
pacemaker-libs-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.0.4-6.el8_3.1 |
pacemaker-remote-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.0.4-6.el8_3.1 |
pacemaker-schemas Red Hat:enterprise_linux:8::appstream | All versions | 0:2.0.4-6.el8_3.1 |
pacemaker Red Hat:enterprise_linux:8::highavailability | All versions | 0:2.0.4-6.el8_3.1 |
pacemaker-cli Red Hat:enterprise_linux:8::highavailability | All versions | 0:2.0.4-6.el8_3.1 |
pacemaker-cli-debuginfo Red Hat:enterprise_linux:8::highavailability | All versions | 0:2.0.4-6.el8_3.1 |
pacemaker-cluster-libs-debuginfo Red Hat:enterprise_linux:8::highavailability | All versions | 0:2.0.4-6.el8_3.1 |
pacemaker-cts Red Hat:enterprise_linux:8::highavailability | All versions | 0:2.0.4-6.el8_3.1 |
pacemaker-debuginfo Red Hat:enterprise_linux:8::highavailability | All versions | 0:2.0.4-6.el8_3.1 |
pacemaker-debugsource Red Hat:enterprise_linux:8::highavailability | All versions | 0:2.0.4-6.el8_3.1 |
pacemaker-doc Red Hat:enterprise_linux:8::highavailability | All versions | 0:2.0.4-6.el8_3.1 |
pacemaker-libs-debuginfo Red Hat:enterprise_linux:8::highavailability | All versions | 0:2.0.4-6.el8_3.1 |
pacemaker-libs-devel Red Hat:enterprise_linux:8::highavailability | All versions | 0:2.0.4-6.el8_3.1 |
pacemaker-nagios-plugins-metadata Red Hat:enterprise_linux:8::highavailability | All versions | 0:2.0.4-6.el8_3.1 |
pacemaker-remote Red Hat:enterprise_linux:8::highavailability | All versions | 0:2.0.4-6.el8_3.1 |
pacemaker-remote-debuginfo Red Hat:enterprise_linux:8::highavailability | All versions | 0:2.0.4-6.el8_3.1 |
Products include Clusterlabs Pacemaker, Debian Debian Linux.
How do I fix CVE-2020-25654?
Apply the vendor's patch.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2020-25654 being exploited?
There is no known exploitation of CVE-2020-25654 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as ALSA-2020:5487, DEBIAN-CVE-2020-25654, DSA-4791-1, GHSA-3q2f-h5rm-7qv7, MGASA-2020-0409, OESA-2022-1900 and 14 more.