{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2021-21991 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-21991 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-21991 is a high-severity vulnerability in Vmware Cloud Foundation, published on 22 Sep 2021. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-21991 and fix it if it is affected.\n\nWhat it is: CVE-2021-21991 is a high-severity vulnerability in Vmware Cloud Foundation, published on 22 Sep 2021. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-21991 in the wild and no public exploit code.\n\nAffected product: Vmware Cloud Foundation. 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-2021-21991/ (Markdown: https://insights.sbomify.com/CVE-2021-21991/index.md)","id":"CVE-2021-21991","markdown":"https://insights.sbomify.com/CVE-2021-21991/index.md","name":"CVE-2021-21991","record":{"aliases":["GHSA-h338-w3fh-545j"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"VMware vCenter Server","requires_auth":"low_privilege","summary":"A local attacker with non-administrative access can escalate privileges to Administrator on VMware vCenter Server via session token handling flaws.","user_interaction":"not_required","vuln_class":"privilege_escalation"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"vmware","cpe":[{"product":"cloud_foundation","vendor":"vmware"},{"product":"vcenter_server","vendor":"vmware"}],"cvss":{"score":7.8,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[],"description":"The vCenter Server contains a local privilege escalation vulnerability due to the way it handles session tokens. A malicious actor with non-administrative user access on vCenter Server host may exploit this issue to escalate privileges to Administrator on the vSphere Client (HTML5) or vCenter Server vSphere Web Client (FLEX/Flash).","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":"Privilege escalation in VMware vCenter Server, VMware Cloud Foundation","id":"CVE-2021-21991","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"vmware:cloud_foundation","products":["vmware:cloud_foundation","vmware:vcenter_server"],"type":"privilege_escalation","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"XML external entity in VMware vCenter Server, VMware Cloud Foundation","id":"CVE-2021-21992"},"packages":[],"prev":{"headline":"Cross-site scripting in Vmware Workspace One UEM console","id":"CVE-2021-21990"},"products":["VMware vCenter Server, VMware Cloud Foundation"],"published":"2021-09-22","related":[{"cvss_score":9.8,"headline":"VMware vCenter Server Heap-Based Buffer Overflow","id":"CVE-2024-38812","kev_date_added":"2024-11-20","published":"2024-09-17"},{"cvss_score":9.8,"headline":"Broadcom VMware vCenter Server Out-of-bounds Write","id":"CVE-2024-37079","kev_date_added":"2026-01-23","published":"2024-06-18"},{"cvss_score":9.8,"headline":"VMware Workspace ONE Access and Identity Manager Server-Side Template Injection","id":"CVE-2022-22954","kev_date_added":"2022-04-14","published":"2022-04-11"},{"cvss_score":9.8,"headline":"VMware vCenter Server File Upload","id":"CVE-2021-22005","kev_date_added":"2021-11-03","published":"2021-09-23"},{"cvss_score":9.8,"headline":"VMware vCenter Server Improper Input Validation","id":"CVE-2021-21985","kev_date_added":"2021-11-03","published":"2021-05-26"},{"cvss_score":9.8,"headline":"VMware Server Side Request Forgery in vRealize Operations Manager API","id":"CVE-2021-21975","kev_date_added":"2022-01-18","published":"2021-03-31"},{"cvss_score":9.8,"headline":"VMware vCenter Server Remote Code Execution","id":"CVE-2021-21972","kev_date_added":"2021-11-03","published":"2021-02-24"}],"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":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["n/a"]},"summary":"A local attacker with non-administrative access can escalate privileges to Administrator on VMware vCenter Server via session token handling flaws.","url":"https://insights.sbomify.com/CVE-2021-21991/"}