{"answers":{"affected":"2 open source packages ship an affected version, including hermes-engine. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-24037 in the wild and no public exploit code.","fix":"Upgrade hermes-engine to 0.8.0 or later.","what":"CVE-2021-24037 is a critical use after free vulnerability in Facebook Hermes, published on 15 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-24037 and fix it if it is affected.\n\nWhat it is: CVE-2021-24037 is a critical use after free vulnerability in Facebook Hermes, published on 15 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-24037 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- hermes-engine (npm): affected all versions; fixed in 0.8.0\n- hermes-engine (npm): affected all versions; fixed in 0.8.0\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-2021-24037/ (Markdown: https://insights.sbomify.com/CVE-2021-24037/index.md)","id":"CVE-2021-24037","markdown":"https://insights.sbomify.com/CVE-2021-24037/index.md","name":"CVE-2021-24037","record":{"aliases":["GHSA-mph8-6787-r8hw"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":true,"product_category":"Hermes JavaScript engine","requires_auth":"none","summary":"Attackers can execute arbitrary code via crafted JavaScript in Hermes if the application permits untrusted script evaluation.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"facebook","cpe":[{"product":"hermes","vendor":"facebook"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"A use after free in hermes, while emitting certain error messages, prior to commit d86e185e485b6330216dee8e854455c694e3a36e allows attackers to potentially execute arbitrary code via crafted JavaScript. Note that this is only exploitable if the application using Hermes permits evaluation of untrusted JavaScript. Hence, most React Native applications are not affected.","ecosystems":["npm"],"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":"Use After Free in Hermes","id":"CVE-2021-24037","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"use_after_free","year":"2021"},"n_packages":2,"n_references":2,"next":{"headline":"Privilege escalation in Oculus Desktop","id":"CVE-2021-24038"},"packages":[{"ecosystem":"npm","fixed":["0.8.0"],"introduced":["0"],"last_affected":[],"package":"hermes-engine","purl":null,"source":"GHSA-mph8-6787-r8hw"},{"ecosystem":"npm","fixed":["0.8.0"],"introduced":["0"],"last_affected":[],"package":"hermes-engine","purl":"pkg:npm/hermes-engine","source":"GHSA-mph8-6787-r8hw"}],"prev":{"headline":"Integer overflow in HHVM","id":"CVE-2021-24036"},"products":["Hermes"],"published":"2021-06-15","related":[{"cvss_score":9.8,"headline":"Memory corruption in Hermes","id":"CVE-2023-23556","kev_date_added":null,"published":"2023-05-18"},{"cvss_score":9.8,"headline":"Memory corruption in Hermes","id":"CVE-2023-23557","kev_date_added":null,"published":"2023-05-18"},{"cvss_score":9.8,"headline":"Memory corruption in Hermes","id":"CVE-2023-25933","kev_date_added":null,"published":"2023-05-18"},{"cvss_score":9.8,"headline":"Use after free in Hermes","id":"CVE-2023-28081","kev_date_added":null,"published":"2023-05-18"},{"cvss_score":9.8,"headline":"Use after free in Hermes","id":"CVE-2023-30470","kev_date_added":null,"published":"2023-05-18"},{"cvss_score":9.8,"headline":"Memory corruption in Hermes","id":"CVE-2022-32234","kev_date_added":null,"published":"2022-10-11"},{"cvss_score":9.8,"headline":"Integer overflow in Hermes","id":"CVE-2022-35289","kev_date_added":null,"published":"2022-10-11"}],"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":"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":"2024-08-03","vendors":["Facebook"]},"summary":"Attackers can execute arbitrary code via crafted JavaScript in Hermes if the application permits untrusted script evaluation.","url":"https://insights.sbomify.com/CVE-2021-24037/"}