CVE-2020-7663

{"id": "CVE-2020-7663", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2020-06-02T19:15:12.467", "references": [{"url": "https://blog.jcoglan.com/2020/06/02/redos-vulnerability-in-websocket-extensions", "tags": ["Third Party Advisory"], "source": "report@snyk.io"}, {"url": "https://github.com/faye/websocket-extensions-ruby/commit/aa156a439da681361ed6f53f1a8131892418838b", "tags": ["Patch", "Third Party Advisory"], "source": "report@snyk.io"}, {"url": "https://github.com/faye/websocket-extensions-ruby/security/advisories/GHSA-g6wq-qcwm-j5g2", "tags": ["Third Party Advisory"], "source": "report@snyk.io"}, {"url": "https://lists.debian.org/debian-lts-announce/2020/08/msg00031.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "report@snyk.io"}, {"url": "https://snyk.io/vuln/SNYK-RUBY-WEBSOCKETEXTENSIONS-570830", "tags": ["Exploit", "Third Party Advisory"], "source": "report@snyk.io"}, {"url": "https://usn.ubuntu.com/4502-1/", "tags": ["Third Party Advisory"], "source": "report@snyk.io"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-Other"}]}], "descriptions": [{"lang": "en", "value": "websocket-extensions ruby module prior to 0.1.5 allows Denial of Service (DoS) via Regex Backtracking. The extension parser may take quadratic time when parsing a header containing an unclosed string parameter value whose content is a repeating two-byte sequence of a backslash and some other character. This could be abused by an attacker to conduct Regex Denial Of Service (ReDoS) on a single-threaded server by providing a malicious payload with the Sec-WebSocket-Extensions header."}, {"lang": "es", "value": "El m\u00f3dulo de ruby websocket-extensions versiones anteriores a 0.1.5, permite una denegaci\u00f3n de servicio (DoS) por medio de Regex Backtracking. El analizador de extensiones puede tomar un tiempo cuadr\u00e1tico cuando analiza un encabezado que contiene un valor de par\u00e1metro de cadena no cerrado cuyo contenido es una secuencia repetitiva de dos bytes de una barra diagonal inversa y alg\u00fan otro car\u00e1cter. Esto podr\u00eda ser abusado por un atacante para conducir una Denegaci\u00f3n de Servicio de Regex (ReDoS) en un servidor de un subproceso \u00fanico al proporcionar una carga \u00fatil maliciosa con el encabezado Sec-WebSocket-Extensions."}], "lastModified": "2023-01-20T18:22:53.047", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:websocket-extensions_project:websocket-extensions:*:*:*:*:*:ruby:*:*", "vulnerable": true, "matchCriteriaId": "709E45F8-F7E2-434B-8D0D-E9AF4E9C52FA", "versionEndExcluding": "0.1.5"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*", "vulnerable": true, "matchCriteriaId": "7A5301BF-1402-4BE0-A0F8-69FBE79BC6D6"}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*", "vulnerable": true, "matchCriteriaId": "23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D"}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*", "vulnerable": true, "matchCriteriaId": "902B8056-9E37-443B-8905-8AA93E2447FB"}], "operator": "OR"}]}], "sourceIdentifier": "report@snyk.io"}