{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2021-25742 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2021-25742 is a high-severity missing authorization vulnerability in Kubernetes ingress-nginx, published on 29 Oct 2021. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-25742 and fix it if it is affected.\n\nWhat it is: CVE-2021-25742 is a high-severity missing authorization vulnerability in Kubernetes ingress-nginx, published on 29 Oct 2021. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-25742 in the wild and no public exploit code.\n\nAffected product: Kubernetes ingress-nginx. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2021-25742/ (Markdown: https://insights.sbomify.com/CVE-2021-25742/index.md)","id":"CVE-2021-25742","markdown":"https://insights.sbomify.com/CVE-2021-25742/index.md","name":"CVE-2021-25742","record":{"aliases":["GHSA-4pp2-3663-mcw8","openSUSE-SU-2024:11726-1"],"analysis":{"component_type":"container_or_infrastructure","fix_type":"patch","impacts":["data_read","privilege_escalation"],"network_reachable":"yes","non_default_config":true,"product_category":"Kubernetes ingress-nginx","requires_auth":"low_privilege","summary":"Users with ingress creation rights can exploit custom snippets to read all cluster secrets, requiring ingress-nginx updates.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"kubernetes","cpe":[{"product":"ingress-nginx","vendor":"kubernetes"},{"product":"trident","vendor":"netapp"}],"cvss":{"score":7.6,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L","version":"3.1"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"description":"A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use the custom snippets feature to obtain all secrets in the cluster.","ecosystems":["openSUSE:Tumbleweed"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Ingress-nginx custom snippets allows retrieval of ingress-nginx serviceaccount token and secrets across all namespaces","id":"CVE-2021-25742","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2021"},"n_packages":1,"n_references":3,"next":{"headline":"ANSI escape characters in kubectl output are not being filtered","id":"CVE-2021-25743"},"packages":[{"ecosystem":"openSUSE:Tumbleweed","fixed":["1.3.3-1.1"],"introduced":["0"],"last_affected":[],"package":"rke","purl":"pkg:rpm/opensuse/rke\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2024:11726-1"}],"prev":{"headline":"Symlink Exchange Can Allow Host Filesystem Access","id":"CVE-2021-25741"},"products":["Kubernetes ingress-nginx"],"published":"2021-10-29","related":[{"cvss_score":8.8,"headline":"ingress-nginx rewrite-target nginx configuration injection","id":"CVE-2026-3288","kev_date_added":null,"published":"2026-03-09"},{"cvss_score":8.8,"headline":"Ingress-nginx `path` sanitization can be bypassed with `log_format` directive","id":"CVE-2022-4886","kev_date_added":null,"published":"2023-10-25"},{"cvss_score":7.6,"headline":"Ingress nginx annotation injection causes arbitrary command execution","id":"CVE-2023-5043","kev_date_added":null,"published":"2023-10-25"},{"cvss_score":7.6,"headline":"Code injection via nginx.ingress.kubernetes.io/permanent-redirect annotation","id":"CVE-2023-5044","kev_date_added":null,"published":"2023-10-25"},{"cvss_score":7.6,"headline":"Ingress-nginx `path` sanitization can be bypassed with newline character","id":"CVE-2021-25748","kev_date_added":null,"published":"2023-05-24"},{"cvss_score":7.6,"headline":"Ingress-nginx path can be pointed to service account token file","id":"CVE-2021-25745","kev_date_added":null,"published":"2022-05-06"},{"cvss_score":7.6,"headline":"Ingress-nginx directive injection via annotations","id":"CVE-2021-25746","kev_date_added":null,"published":"2022-05-06"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-09-16","vendors":["Kubernetes"]},"summary":"Users with ingress creation rights can exploit custom snippets to read all cluster secrets, requiring ingress-nginx updates.","url":"https://insights.sbomify.com/CVE-2021-25742/"}