CVE-2018-20821

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:sass-lang:libsass:*:*:*:*:*:*:*:*", "matchCriteriaId": "7377DD2D-250C-48D1-92F9-55C557967804", "versionEndIncluding": "3.5.5", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The parsing component in LibSass through 3.5.5 allows attackers to cause a denial-of-service (uncontrolled recursion in Sass::Parser::parse_css_variable_value in parser.cpp)."}, {"lang": "es", "value": "El componente de an\u00e1lisis en LibSass versi\u00f3n hasta 3.5.5 permite a los atacantes causar una denegaci\u00f3n de servicio (recursi\u00f3n no controlada Sass::Parser::parse_css_variable_value in parser.cpp)."}], "id": "CVE-2018-20821", "lastModified": "2026-06-17T01:53:32.777", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 4.3, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2019-04-23T14:29:00.460", "references": [{"source": "cve@mitre.org", "tags": ["Broken Link"], "url": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00047.html"}, {"source": "cve@mitre.org", "tags": ["Broken Link"], "url": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00051.html"}, {"source": "cve@mitre.org", "tags": ["Broken Link"], "url": "http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00027.html"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Patch", "Third Party Advisory"], "url": "https://github.com/sass/libsass/issues/2658"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Broken Link"], "url": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00047.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Broken Link"], "url": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00051.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Broken Link"], "url": "http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00027.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Patch", "Third Party Advisory"], "url": "https://github.com/sass/libsass/issues/2658"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-674"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "libsass: parsing component allows attackers to cause denial-of-service", "id": "1706044", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1706044"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-674", "details": ["The parsing component in LibSass through 3.5.5 allows attackers to cause a denial-of-service (uncontrolled recursion in Sass::Parser::parse_css_variable_value in parser.cpp)."], "name": "CVE-2018-20821", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "libsass", "product_name": "Red Hat Enterprise Linux 8"}], "public_date": "2018-06-02T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2018-20821\nhttps://nvd.nist.gov/vuln/detail/CVE-2018-20821"], "statement": "This issue did not affect the versions of libsass as shipped with Red Hat Enterprise Linux 8 as the flaw was introduced in a newer version of the library.", "threat_severity": "Moderate"}

{}