{"answers":{"affected":"3 open source packages ship an affected version, including github.com/rancher/rancher. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-36776 in the wild and no public exploit code.","fix":"Upgrade github.com/rancher/rancher to 2.5.10 or later.","what":"CVE-2021-36776 is a high-severity authentication bypass vulnerability in SUSE Rancher, published on 1 Apr 2022. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-36776 and fix it if it is affected.\n\nWhat it is: CVE-2021-36776 is a high-severity authentication bypass vulnerability in SUSE Rancher, published on 1 Apr 2022. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-36776 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/rancher/rancher (Go): affected all versions; no fix listed\n- github.com/rancher/rancher (Go): affected from 2.5.0; fixed in 2.5.10\n- github.com/rancher/rancher (Go): affected from 2.5.0; fixed in 2.5.10\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-2021-36776/ (Markdown: https://insights.sbomify.com/CVE-2021-36776/index.md)","id":"CVE-2021-36776","markdown":"https://insights.sbomify.com/CVE-2021-36776/index.md","name":"CVE-2021-36776","record":{"aliases":["GHSA-gvh9-xgrq-r8hw","GO-2024-2771"],"analysis":{"component_type":"cloud_service","fix_type":"upgrade","impacts":["privilege_escalation","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Rancher container management","requires_auth":"low_privilege","summary":"Remote attackers can impersonate arbitrary users in SUSE Rancher due to improper access control in the API proxy.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"suse","cpe":[{"product":"rancher","vendor":"rancher"}],"cvss":{"score":8.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-284","name":"Improper Access Control"}],"description":"A Improper Access Control vulnerability in SUSE Rancher allows remote attackers impersonate arbitrary users. This issue affects: SUSE Rancher Rancher versions prior to 2.5.10.","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":true,"headline":"Steve API proxy impersonation","id":"CVE-2021-36776","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"auth_bypass","year":"2021"},"n_packages":3,"n_references":1,"next":{"headline":"login-proxy sends password to attacker-provided domain","id":"CVE-2021-36777"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/rancher/rancher","purl":"pkg:golang/github.com/rancher/rancher","source":"GO-2024-2771"},{"ecosystem":"Go","fixed":["2.5.10"],"introduced":["2.5.0"],"last_affected":[],"package":"github.com/rancher/rancher","purl":null,"source":"GHSA-gvh9-xgrq-r8hw"},{"ecosystem":"Go","fixed":["2.5.10"],"introduced":["2.5.0"],"last_affected":[],"package":"github.com/rancher/rancher","purl":"pkg:golang/github.com/rancher/rancher","source":"GHSA-gvh9-xgrq-r8hw"}],"prev":{"headline":"Deleting PRTBs associated to a group doesn't cause deletion of corresponding RoleBindings","id":"CVE-2021-36775"},"products":["Rancher"],"published":"2022-04-01","related":[{"cvss_score":9.9,"headline":"Rancher: Cloud credentials can be used through proxy API by users without access","id":"CVE-2021-25320","kev_date_added":null,"published":"2021-07-15"},{"cvss_score":8.8,"headline":"Deleting PRTBs associated to a group doesn't cause deletion of corresponding RoleBindings","id":"CVE-2021-36775","kev_date_added":null,"published":"2022-04-01"},{"cvss_score":8.8,"headline":"rancher: API group not properly specified when creating Kubernetes RBAC resources","id":"CVE-2021-25318","kev_date_added":null,"published":"2021-07-15"},{"cvss_score":8.8,"headline":"Rancher: Privilege escalation vulnerability via malicious Connection header","id":"CVE-2021-31999","kev_date_added":null,"published":"2021-07-15"}],"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":"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":"2024-09-17","vendors":["SUSE"]},"summary":"Remote attackers can impersonate arbitrary users in SUSE Rancher due to improper access control in the API proxy.","url":"https://insights.sbomify.com/CVE-2021-36776/"}