{"answers":{"affected":"3 open source packages ship an affected version, including github.com/cri-o/cri-o.","exploited":"There is no known exploitation of CVE-2025-4437 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2025-4437 yet. Limit exposure of the affected software until one is available.","what":"CVE-2025-4437 is a medium-severity denial of service vulnerability in Red Hat OpenShift Container Platform 4, published on 20 Aug 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2025-4437 and fix it if it is affected.\n\nWhat it is: CVE-2025-4437 is a medium-severity denial of service vulnerability in Red Hat OpenShift Container Platform 4, published on 20 Aug 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2025-4437 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/cri-o/cri-o (Go): affected all versions; no fix listed\n- github.com/cri-o/cri-o (Go): affected all versions up to 1.33.3; no fix listed\n- github.com/cri-o/cri-o (Go): affected all versions up to 1.33.3; no fix listed\n\nTask:\n1. 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.\n2. 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.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2025-4437/ (Markdown: https://insights.sbomify.com/CVE-2025-4437/index.md)","id":"CVE-2025-4437","markdown":"https://insights.sbomify.com/CVE-2025-4437/index.md","name":"CVE-2025-4437","record":{"aliases":["GHSA-8f93-j3fx-72f3","GO-2025-3897"],"analysis":{"component_type":"container_or_infrastructure","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"CRI-O container runtime","requires_auth":"low_privilege","summary":"Attackers can cause denial of service by launching containers with non-existent users and large /etc/passwd files, exhausting host memory.","user_interaction":"required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[],"cvss":{"score":5.7,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"There's a vulnerability in the CRI-O application where when container is launched with securityContext.runAsUser specifying a non-existent user, CRI-O attempts to create the user, reading the container's entire /etc/passwd file into memory. If this file is excessively large, it can cause the a high memory consumption leading applications to be killed due to out-of-memory. As a result a denial-of-service can be achieved, possibly disrupting other pods and services running in the same host.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Cri-o: large /etc/passwd file may lead to denial of service","id":"CVE-2025-4437","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"denial_of_service","year":"2025"},"n_packages":3,"n_references":2,"next":{"headline":"This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.","id":"CVE-2025-4438"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/cri-o/cri-o","purl":"pkg:golang/github.com/cri-o/cri-o","source":"GO-2025-3897"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["1.33.3"],"package":"github.com/cri-o/cri-o","purl":null,"source":"GHSA-8f93-j3fx-72f3"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["1.33.3"],"package":"github.com/cri-o/cri-o","purl":"pkg:golang/github.com/cri-o/cri-o","source":"GHSA-8f93-j3fx-72f3"}],"prev":{"headline":"This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.","id":"CVE-2025-4436"},"products":["Red Hat OpenShift Container Platform 4"],"published":"2025-08-20","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-01","vendors":["Red Hat"]},"summary":"Attackers can cause denial of service by launching containers with non-existent users and large /etc/passwd files, exhausting host memory.","url":"https://insights.sbomify.com/CVE-2025-4437/"}