{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-27657 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-27657 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-27657 is a high-severity vulnerability in Johnson Controls Metasys, published on 4 Jun 2021. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-27657 and fix it if it is affected.\n\nWhat it is: CVE-2021-27657 is a high-severity vulnerability in Johnson Controls Metasys, published on 4 Jun 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-2021-27657 in the wild and no public exploit code.\n\nAffected product: Johnson Controls Metasys. 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-2021-27657/ (Markdown: https://insights.sbomify.com/CVE-2021-27657/index.md)","id":"CVE-2021-27657","markdown":"https://insights.sbomify.com/CVE-2021-27657/index.md","name":"CVE-2021-27657","record":{"aliases":["GHSA-g3gv-gq3r-m3m6"],"analysis":{"component_type":"ics_ot","fix_type":"patch","impacts":["privilege_escalation","data_read","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Building automation system","requires_auth":"low_privilege","summary":"Authenticated users can escalate privileges to access or modify system files via crafted web messages in Johnson Controls Metasys.","user_interaction":"not_required","vuln_class":"privilege_escalation"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"jci","cpe":[{"product":"metasys","vendor":"johnsoncontrols"}],"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-269","name":"Improper Privilege Management"}],"description":"Successful exploitation of this vulnerability could give an authenticated Metasys user an unintended level of access to the server file system, allowing them to access or modify system files by sending specifically crafted web messages to the Metasys system. This issue affects: Johnson Controls Metasys version 11.0 and prior versions.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Metasys Improper Privilege Management","id":"CVE-2021-27657","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"privilege_escalation","year":"2021"},"n_packages":0,"n_references":3,"next":{"headline":"exacqVision Enterprise Manager CSS","id":"CVE-2021-27658"},"packages":[],"prev":{"headline":"exacqVision Web Services - Information Exposure","id":"CVE-2021-27656"},"products":["Metasys"],"published":"2021-06-04","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":["Johnson Controls"]},"summary":"Authenticated users can escalate privileges to access or modify system files via crafted web messages in Johnson Controls Metasys.","url":"https://insights.sbomify.com/CVE-2021-27657/"}