{"id":"EUVD-2024-2567","revision":"abcb4b696b42435e9a72e6f6bf1ec2f0","records":[{"revision":"abcb4b696b42435e9a72e6f6bf1ec2f0","observedAt":"2026-11-07T00:30:01.472+00:00","statement":{"source":"euvd","id":"EUVD-2024-2567","aliases":["CVE-2024-43367","GHSA-f67q-wr6w-23jq"],"title":"Boa is an embeddable and experimental Javascript engine written in Rust. Starting in version 0.16 and prior to version 0.19.0, a wrong assumption made when handling ECMAScript's `AsyncGenerator` operations can cause an uncaught exception on…","description":"Boa is an embeddable and experimental Javascript engine written in Rust. Starting in version 0.16 and prior to version 0.19.0, a wrong assumption made when handling ECMAScript's `AsyncGenerator` operations can cause an uncaught exception on certain scripts. Boa's implementation of `AsyncGenerator` makes the assumption that the state of an `AsyncGenerator` object cannot change while resolving a promise created by methods of `AsyncGenerator` such as `%AsyncGeneratorPrototype%.next`, `%AsyncGeneratorPrototype%.return`, or `%AsyncGeneratorPrototype%.throw`. However, a carefully constructed code could trigger a state transition from a getter method for the promise's `then` property, which causes the engine to fail an assertion of this assumption, causing an uncaught exception. This could be used to create a Denial Of Service attack in applications that run arbitrary ECMAScript code provided by an external user. Version 0.19.0 is patched to correctly handle this case. Users unable to upgrade to the patched version would want to use `std::panic::catch_unwind` to ensure any exceptions caused by the engine don't impact the availability of the main application.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":null}],"references":["https://github.com/boa-dev/boa/security/advisories/GHSA-f67q-wr6w-23jq","https://github.com/tc39/ecma262/security/advisories/GHSA-g38c-wh3c-5h9r","https://github.com/boa-dev/boa/commit/69ea2f52ed976934bff588d6b566bae01be313f7"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2024-2567","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Aug 15, 2024, 8:38:23 PM","dateUpdated":"Aug 20, 2024, 3:45:24 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2024-2567","identifiers":["EUVD-2024-2567","CVE-2024-43367","GHSA-f67q-wr6w-23jq"]},"retained":false,"historicalAffected":[]}],"coverage":[]}