# CVE-2021-44225: Missing authorization in n/a > An attacker can bypass D-Bus access controls in Keepalived to inspect and manipulate system properties, potentially affecting other services. - **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N`) - **Exploited in the wild:** Not known - **Login needed:** Any signed-in user - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 26 Nov 2021 - **Updated:** 4 Aug 2024 - **Also known as:** ALSA-2022:1930, AZL-6508, DEBIAN-CVE-2021-44225, DLA-3388-1, GHSA-jpw2-cwxg-4qv8, MGASA-2021-0567, OESA-2021-1477, RHSA-2022:1930, RLSA-2022:1930, SUSE-SU-2022:2923-1, SUSE-SU-2022:3232-1, SUSE-SU-2022:3234-1, SUSE-SU-2022:3235-1, UBUNTU-CVE-2021-44225, USN-5188-1, openSUSE-SU-2024:11888-1 ## What is CVE-2021-44225? CVE-2021-44225 is a medium-severity missing authorization vulnerability in Fedoraproject Fedora, published on 26 Nov 2021. Any signed-in user can exploit it over the network, with no action from the victim. ### Official description In Keepalived through 2.2.4, the D-Bus policy does not sufficiently restrict the message destination, allowing any user to inspect and manipulate any property. This leads to access-control bypass in some situations in which an unrelated D-Bus system service has a settable (writable) property ## Which versions are affected by CVE-2021-44225? It affects 2 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `keepalived` | AlmaLinux:8 | All versions | 2.1.5-8.el8 | | `keepalived` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.1.5-8.el8 | | `keepalived-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.1.5-8.el8 | | `keepalived-debugsource` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.1.5-8.el8 | | `keepalived` | Rocky Linux:8 | All versions | 0:2.1.5-8.el8 | | `keepalived` | SUSE:HPE Helion OpenStack 8 | All versions | 2.0.19-3.9.1 | | `keepalived` | SUSE:Linux Enterprise High Availability Extension 15 SP1 | All versions | 2.0.19-150100.3.6.1 | | `keepalived` | SUSE:Linux Enterprise High Availability Extension 15 SP2 | All versions | 2.0.19-150100.3.6.1 | | `keepalived` | SUSE:Linux Enterprise High Availability Extension 15 SP3 | All versions | 2.0.19-150100.3.6.1 | | `keepalived` | SUSE:Linux Enterprise High Availability Extension 15 SP4 | All versions | 2.2.2-150400.3.5.1 | | `keepalived` | SUSE:OpenStack Cloud 8 | All versions | 2.0.19-3.9.1 | | `keepalived` | SUSE:OpenStack Cloud 9 | All versions | 2.0.19-3.6.1 | | `keepalived` | SUSE:OpenStack Cloud Crowbar 8 | All versions | 2.0.19-3.9.1 | | `keepalived` | SUSE:OpenStack Cloud Crowbar 9 | All versions | 2.0.19-3.6.1 | | `keepalived` | openSUSE:Leap 15.3 | All versions | 2.0.19-150100.3.6.1 | | `keepalived` | openSUSE:Leap 15.4 | All versions | 2.2.2-150400.3.5.1 | | `keepalived` | openSUSE:Tumbleweed | All versions | 2.2.7-1.1 | Products: Fedoraproject Fedora, Keepalived Keepalived. ## How do I fix CVE-2021-44225? Apply the vendor's patch. ## Is CVE-2021-44225 being exploited? There is no known exploitation of CVE-2021-44225 in the wild and no public exploit code. ## Other vulnerabilities in Fedoraproject Fedora - [CVE-2024-4577](https://insights.sbomify.com/CVE-2024-4577/): PHP-CGI OS Command Injection (critical 9.8, exploited in the wild) - [CVE-2021-39226](https://insights.sbomify.com/CVE-2021-39226/): Grafana Authentication Bypass (critical 9.8, exploited in the wild) - [CVE-2019-5544](https://insights.sbomify.com/CVE-2019-5544/): VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow (critical 9.8, exploited in the wild) - [CVE-2024-4947](https://insights.sbomify.com/CVE-2024-4947/): Google Chromium V8 Type Confusion (critical 9.6, exploited in the wild) - [CVE-2024-4671](https://insights.sbomify.com/CVE-2024-4671/): Google Chromium Visuals Use-After-Free (critical 9.6, exploited in the wild) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2021-44225 and fix it if it is affected. What it is: CVE-2021-44225 is a medium-severity missing authorization vulnerability in Fedoraproject Fedora, published on 26 Nov 2021. Any signed-in user can exploit it over the network, with no action from the victim. Exploitation: There is no known exploitation of CVE-2021-44225 in the wild and no public exploit code. Affected product: Fedoraproject Fedora. 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-2021-44225/ (Markdown: https://insights.sbomify.com/CVE-2021-44225/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2021-44225 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-44225 - OSV: https://osv.dev/vulnerability/CVE-2021-44225 --- From sbomify Insights: https://insights.sbomify.com/CVE-2021-44225/ Summaries are generated and may contain mistakes; the official description above is the record.