{"containers":{"cna":{"affected":[{"product":"jsx-slack","vendor":"yhatt","versions":[{"status":"affected","version":"< 4.5.2"}]}],"descriptions":[{"lang":"en","value":"jsx-slack is a package for building JSON objects for Slack block kit surfaces from JSX. The maintainers found the patch for CVE-2021-43838 in jsx-slack v4.5.1 is insufficient tfor protection from a Regular Expression Denial of Service (ReDoS) attack. If an attacker can put a lot of JSX elements into `<blockquote>` tag _with including multibyte characters_, an internal regular expression for escaping characters may consume an excessive amount of computing resources. v4.5.1 passes the test against ASCII characters but misses the case of multibyte characters. jsx-slack v4.5.2 has updated regular expressions for escaping blockquote characters to prevent catastrophic backtracking. It is also including an updated test case to confirm rendering multiple tags in `<blockquote>` with multibyte characters."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-1333","description":"CWE-1333: Inefficient Regular Expression Complexity","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2021-12-20T21:15:12.000Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"tags":["x_refsource_CONFIRM"],"url":"https://github.com/yhatt/jsx-slack/security/advisories/GHSA-hp68-xhvj-x6j6"},{"tags":["x_refsource_MISC"],"url":"https://github.com/yhatt/jsx-slack/security/advisories/GHSA-55xv-f85c-248q"},{"tags":["x_refsource_MISC"],"url":"https://github.com/yhatt/jsx-slack/commit/46bc88391d89d5fda4ce689e18ca080bcdd29ecc"},{"tags":["x_refsource_MISC"],"url":"https://github.com/yhatt/jsx-slack/releases/tag/v4.5.2"}],"source":{"advisory":"GHSA-hp68-xhvj-x6j6","discovery":"UNKNOWN"},"title":"Insufficient patch for Regular Expression Denial of Service (ReDoS) to jsx-slack v4.5.1","x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"security-advisories@github.com","ID":"CVE-2021-43843","STATE":"PUBLIC","TITLE":"Insufficient patch for Regular Expression Denial of Service (ReDoS) to jsx-slack v4.5.1"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"jsx-slack","version":{"version_data":[{"version_value":"< 4.5.2"}]}}]},"vendor_name":"yhatt"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"jsx-slack is a package for building JSON objects for Slack block kit surfaces from JSX. 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