{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-43453 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-43453 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-43453 is a critical memory corruption vulnerability in Jerryscript Jerryscript, published on 7 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-43453 and fix it if it is affected.\n\nWhat it is: CVE-2021-43453 is a critical memory corruption vulnerability in Jerryscript Jerryscript, published on 7 Apr 2022. 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-2021-43453 in the wild and no public exploit code.\n\nAffected product: Jerryscript Jerryscript. 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-2021-43453/ (Markdown: https://insights.sbomify.com/CVE-2021-43453/index.md)","id":"CVE-2021-43453","markdown":"https://insights.sbomify.com/CVE-2021-43453/index.md","name":"CVE-2021-43453","record":{"aliases":["GHSA-prc8-jxj9-2w9m","UBUNTU-CVE-2021-43453"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service","code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"JavaScript engine","requires_auth":"none","summary":"Heap-based buffer overflow in JerryScript allows attackers to cause denial of service or potentially execute arbitrary code via crafted JavaScript.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"jerryscript","vendor":"jerryscript"}],"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-125","name":"Out-of-bounds Read"}],"description":"A Heap-based Buffer Overflow vulnerability exists in JerryScript 2.4.0 and prior versions via an out-of-bounds read in parser_parse_for_statement_start in the js-parser-statm.c file. This issue is similar to CVE-2020-29657.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Memory corruption in n/a","id":"CVE-2021-43453","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"jerryscript:jerryscript","products":["jerryscript:jerryscript"],"type":"memory_corruption","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Privilege escalation in n/a","id":"CVE-2021-43454"},"packages":[],"prev":{"headline":"SQL injection in n/a","id":"CVE-2021-43451"},"products":["n/a"],"published":"2022-04-07","related":[{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2023-36109","kev_date_added":null,"published":"2023-09-20"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2023-38961","kev_date_added":null,"published":"2023-08-21"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2020-22597","kev_date_added":null,"published":"2023-07-03"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2021-42863","kev_date_added":null,"published":"2022-05-12"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2021-41751","kev_date_added":null,"published":"2022-04-05"},{"cvss_score":9.8,"headline":"Denial of service in n/a","id":"CVE-2021-41752","kev_date_added":null,"published":"2022-04-05"}],"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":"2024-08-04","vendors":["n/a"]},"summary":"Heap-based buffer overflow in JerryScript allows attackers to cause denial of service or potentially execute arbitrary code via crafted JavaScript.","url":"https://insights.sbomify.com/CVE-2021-43453/"}