# CVE-2021-25317: cups: ownership of /var/log/cups allows the lp user to create files as root > Local attackers with lp user control can create files as root due to incorrect default permissions on the CUPS log directory. - **Severity:** Low 3.3 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N`) - **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:** Yes - **Published:** 5 May 2021 - **Updated:** 8 Oct 2026 - **Also known as:** CLSA-2026-1787145903, GHSA-7qpc-9fjw-5c32, OESA-2021-1212, SUSE-SU-2021:1453-1, SUSE-SU-2021:1454-1, SUSE-SU-2021:14712-1, openSUSE-SU-2021:0638-1 ## What is CVE-2021-25317? CVE-2021-25317 is a low-severity vulnerability in Fedoraproject Fedora, published on 5 May 2021. It can only be exploited from the same machine or local network, with no action from the victim. ### Official description A Incorrect Default Permissions vulnerability in the packaging of cups of SUSE Linux Enterprise Server 11-SP4-LTSS, SUSE Manager Server 4.0, SUSE OpenStack Cloud Crowbar 9; openSUSE Leap 15.2, Factory allows local attackers with control of the lp users to create files as root with 0644 permissions without the ability to set the content. This issue affects: SUSE Linux Enterprise Server 11-SP4-LTSS cups versions prior to 1.3.9. SUSE Manager Server 4.0 cups versions prior to 2.2.7. SUSE OpenStack Cloud Crowbar 9 cups versions prior to 1.7.5. openSUSE Leap 15.2 cups versions prior to 2.2.7. openSUSE Factory cups version 2.3.3op2-2.1 and prior versions. Weakness: CWE-276 (Incorrect Default Permissions) ## Which versions are affected by CVE-2021-25317? It affects 2 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `cups` | SUSE:Enterprise Storage 6 | All versions | 2.2.7-3.26.1 | | `cups` | SUSE:HPE Helion OpenStack 8 | All versions | 1.7.5-20.36.1 | | `cups` | SUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOS | All versions | 2.2.7-3.26.1 | | `cups` | SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS | All versions | 2.2.7-3.26.1 | | `cups` | SUSE:Linux Enterprise High Performance Computing 15-ESPOS | All versions | 2.2.7-3.26.1 | | `cups` | SUSE:Linux Enterprise High Performance Computing 15-LTSS | All versions | 2.2.7-3.26.1 | | `cups` | SUSE:Linux Enterprise Module for Basesystem 15 SP2 | All versions | 2.2.7-3.26.1 | | `cups` | SUSE:Linux Enterprise Module for Development Tools 15 SP2 | All versions | 2.2.7-3.26.1 | | `cups` | SUSE:Linux Enterprise Point of Sale 11 SP3 | All versions | 1.3.9-8.46.56.18.1 | | `cups` | SUSE:Linux Enterprise Server 11 SP4-LTSS | All versions | 1.3.9-8.46.56.18.1 | | `cups` | SUSE:Linux Enterprise Server 12 SP2-BCL | All versions | 1.7.5-20.36.1 | | `cups` | SUSE:Linux Enterprise Server 12 SP3-BCL | All versions | 1.7.5-20.36.1 | | `cups` | SUSE:Linux Enterprise Server 12 SP3-LTSS | All versions | 1.7.5-20.36.1 | | `cups` | SUSE:Linux Enterprise Server 12 SP4-LTSS | All versions | 1.7.5-20.36.1 | | `cups` | SUSE:Linux Enterprise Server 12 SP5 | All versions | 1.7.5-20.36.1 | | `cups` | SUSE:Linux Enterprise Server 15 SP1-BCL | All versions | 2.2.7-3.26.1 | | `cups` | SUSE:Linux Enterprise Server 15 SP1-LTSS | All versions | 2.2.7-3.26.1 | | `cups` | SUSE:Linux Enterprise Server 15-LTSS | All versions | 2.2.7-3.26.1 | | `cups` | SUSE:Linux Enterprise Server for SAP Applications 12 SP3 | All versions | 1.7.5-20.36.1 | | `cups` | SUSE:Linux Enterprise Server for SAP Applications 12 SP4 | All versions | 1.7.5-20.36.1 | | `cups` | SUSE:Linux Enterprise Server for SAP Applications 12 SP5 | All versions | 1.7.5-20.36.1 | | `cups` | SUSE:Linux Enterprise Server for SAP Applications 15 | All versions | 2.2.7-3.26.1 | | `cups` | SUSE:Linux Enterprise Server for SAP Applications 15 SP1 | All versions | 2.2.7-3.26.1 | | `cups` | SUSE:Linux Enterprise Software Development Kit 12 SP5 | All versions | 1.7.5-20.36.1 | | `cups` | SUSE:Manager Proxy 4.0 | All versions | 2.2.7-3.26.1 | | `cups` | SUSE:Manager Retail Branch Server 4.0 | All versions | 2.2.7-3.26.1 | | `cups` | SUSE:Manager Server 4.0 | All versions | 2.2.7-3.26.1 | | `cups` | SUSE:OpenStack Cloud 8 | All versions | 1.7.5-20.36.1 | | `cups` | SUSE:OpenStack Cloud 9 | All versions | 1.7.5-20.36.1 | | `cups` | SUSE:OpenStack Cloud Crowbar 8 | All versions | 1.7.5-20.36.1 | | `cups` | SUSE:OpenStack Cloud Crowbar 9 | All versions | 1.7.5-20.36.1 | | `cups` | openSUSE:Leap 15.2 | All versions | 2.2.7-lp152.9.9.1 | Products: Fedoraproject Fedora, Suse Cups. ## How do I fix CVE-2021-25317? Apply the vendor's patch. ## Is CVE-2021-25317 being exploited? There is no known exploitation of CVE-2021-25317 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-2021-25317 and fix it if it is affected. What it is: CVE-2021-25317 is a low-severity vulnerability in Fedoraproject Fedora, published on 5 May 2021. 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-2021-25317 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-2021-25317/ (Markdown: https://insights.sbomify.com/CVE-2021-25317/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2021-25317 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-25317 - OSV: https://osv.dev/vulnerability/CVE-2021-25317 --- From sbomify Insights: https://insights.sbomify.com/CVE-2021-25317/ Summaries are generated and may contain mistakes; the official description above is the record.