{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-23883 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-23883 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-23883 is a medium-severity vulnerability in McAfee LLC Endpoint Security (ENS) for Windows, published on 10 Feb 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2021-23883 and fix it if it is affected.\n\nWhat it is: CVE-2021-23883 is a medium-severity vulnerability in McAfee LLC Endpoint Security (ENS) for Windows, published on 10 Feb 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2021-23883 in the wild and no public exploit code.\n\nAffected product: McAfee LLC Endpoint Security (ENS) for Windows. 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-2021-23883/ (Markdown: https://insights.sbomify.com/CVE-2021-23883/index.md)","id":"CVE-2021-23883","markdown":"https://insights.sbomify.com/CVE-2021-23883/index.md","name":"CVE-2021-23883","record":{"aliases":["GHSA-fcrq-5g5m-qh6j"],"analysis":{"component_type":"desktop_application","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Endpoint Security","requires_auth":"high_privilege","summary":"A local administrator can crash Windows via a specific system call in McAfee Endpoint Security due to a null pointer dereference.","user_interaction":"required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"trellix","cpe":[{"product":"endpoint_security","vendor":"mcafee"}],"cvss":{"score":4,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-476","name":"NULL Pointer Dereference"}],"description":"A Null Pointer Dereference vulnerability in McAfee Endpoint Security (ENS) for Windows prior to 10.7.0 February 2021 Update allows a local administrator to cause Windows to crash via a specific system call which is not handled correctly. This varies by machine and had partial protection prior to this update.","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":"Null Pointer Dereference vulnerability in McAfee Endpoint Security (ENS)","id":"CVE-2021-23883","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"null_dereference","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Clear text exposure of password in McAfee CSR ePO extension","id":"CVE-2021-23884"},"packages":[],"prev":{"headline":"Improper Access Control in the ENS installer","id":"CVE-2021-23882"},"products":["Endpoint Security (ENS) for Windows"],"published":"2021-02-10","related":[{"cvss_score":8.8,"headline":"Improper Access Control Vulnerability in ENS for Windows","id":"CVE-2020-7319","kev_date_added":null,"published":"2020-09-09"},{"cvss_score":8.8,"headline":"Privilege Escalation vulnerability through symbolic links in ENS for Windows","id":"CVE-2020-7264","kev_date_added":null,"published":"2020-05-08"},{"cvss_score":8.8,"headline":"Privilege Escalation vulnerability through symbolic links in ENSM","id":"CVE-2020-7265","kev_date_added":null,"published":"2020-05-08"},{"cvss_score":8.6,"headline":"McAfee Endpoint Security updates fix a privilege escalation vulnerability","id":"CVE-2019-3582","kev_date_added":null,"published":"2019-02-28"},{"cvss_score":8.4,"headline":"Privilege Escalation vulnerability through Symbolic links in ENS","id":"CVE-2020-7257","kev_date_added":null,"published":"2020-04-15"},{"cvss_score":8.2,"headline":"Improper Access Control in the ENS installer","id":"CVE-2021-23882","kev_date_added":null,"published":"2021-02-10"},{"cvss_score":8.2,"headline":"ENS symbolic link log file manipulation vulnerability","id":"CVE-2020-7250","kev_date_added":null,"published":"2020-04-15"}],"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":["McAfee LLC"]},"summary":"A local administrator can crash Windows via a specific system call in McAfee Endpoint Security due to a null pointer dereference.","url":"https://insights.sbomify.com/CVE-2021-23883/"}