{"affected":[{"affectedData":[{"product":"HHVM","vendor":"Facebook","versions":[{"lessThan":"unspecified","status":"unaffected","version":"4.83.1","versionType":"custom"},{"status":"affected","version":"4.83.0"},{"lessThan":"unspecified","status":"unaffected","version":"4.82.1","versionType":"custom"},{"status":"affected","version":"4.82.0"},{"lessThan":"unspecified","status":"unaffected","version":"4.81.1","versionType":"custom"},{"status":"affected","version":"4.81.0"},{"lessThan":"unspecified","status":"unaffected","version":"4.80.1","versionType":"custom"},{"status":"affected","version":"4.80.0"},{"lessThan":"unspecified","status":"unaffected","version":"4.79.1","versionType":"custom"},{"status":"affected","version":"4.79.0"},{"lessThan":"unspecified","status":"unaffected","version":"4.78.1","versionType":"custom"},{"lessThan":"unspecified","status":"affected","version":"4.57.0","versionType":"custom"},{"lessThan":"unspecified","status":"unaffected","version":"4.56.2","versionType":"custom"},{"lessThan":"4.56.2","status":"affected","version":"unspecified","versionType":"custom"}]}],"source":"cve-assign@fb.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:*","matchCriteriaId":"6711FFC9-F4D3-438B-B596-30FCB4EAF015","versionEndExcluding":"4.56.2","vulnerable":true},{"criteria":"cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:*","matchCriteriaId":"14D6DF29-4414-4A07-99E9-1BD568EC77A7","versionEndExcluding":"4.78.1","versionStartIncluding":"4.57.0","vulnerable":true},{"criteria":"cpe:2.3:a:facebook:hhvm:4.79.0:*:*:*:*:*:*:*","matchCriteriaId":"0C83AAFF-2886-424B-A9BD-251B3AAC790B","vulnerable":true},{"criteria":"cpe:2.3:a:facebook:hhvm:4.80.0:*:*:*:*:*:*:*","matchCriteriaId":"73B27B4A-CD40-4493-BDCD-27F6ADD6C65A","vulnerable":true},{"criteria":"cpe:2.3:a:facebook:hhvm:4.81.0:*:*:*:*:*:*:*","matchCriteriaId":"5BD9447B-B287-484B-A14C-787F8481EBB8","vulnerable":true},{"criteria":"cpe:2.3:a:facebook:hhvm:4.82.0:*:*:*:*:*:*:*","matchCriteriaId":"15825F25-22B8-4863-A4E0-AD2EE66FA12C","vulnerable":true},{"criteria":"cpe:2.3:a:facebook:hhvm:4.83.0:*:*:*:*:*:*:*","matchCriteriaId":"A04923E1-4DCE-4E34-8238-99BCCEEF4791","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"An incorrect size calculation in ldap_escape may lead to an integer overflow when overly long input is passed in, resulting in an out-of-bounds write. This issue affects HHVM prior to 4.56.2, all versions between 4.57.0 and 4.78.0, 4.79.0, 4.80.0, 4.81.0, 4.82.0, 4.83.0."},{"lang":"es","value":"Un cálculo de tamaño incorrecto en la función ldap_escape puede conllevar a un desbordamiento de enteros cuando es pasada una entrada demasiado larga, resultando en una escritura fuera de límites. Este problema afecta a HHVM versiones anteriores a 4.56.2, todas las versiones entre 4.57.0 y 4.78.0, 4.79.0, 4.80.0, 4.81.0, 4.82.0, 4.83.0"}],"id":"CVE-2020-1916","lastModified":"2026-06-17T03:02:36.563","metrics":{"cvssMetricV2":[{"acInsufInfo":false,"baseSeverity":"HIGH","cvssData":{"accessComplexity":"LOW","accessVector":"NETWORK","authentication":"NONE","availabilityImpact":"PARTIAL","baseScore":7.5,"confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P","version":"2.0"},"exploitabilityScore":10.0,"impactScore":6.4,"obtainAllPrivilege":false,"obtainOtherPrivilege":false,"obtainUserPrivilege":false,"source":"nvd@nist.gov","type":"Primary","userInteractionRequired":false}],"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"exploitabilityScore":3.9,"impactScore":5.9,"source":"nvd@nist.gov","type":"Primary"}]},"published":"2021-03-10T16:15:14.173","references":[{"source":"cve-assign@fb.com","tags":["Patch","Third Party Advisory"],"url":"https://github.com/facebook/hhvm/commit/abe0b29e4d3a610f9bc920b8be4ad8403364c2d4"},{"source":"cve-assign@fb.com","tags":["Release Notes","Vendor Advisory"],"url":"https://hhvm.com/blog/2020/11/12/security-update.html"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory"],"url":"https://github.com/facebook/hhvm/commit/abe0b29e4d3a610f9bc920b8be4ad8403364c2d4"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Release Notes","Vendor Advisory"],"url":"https://hhvm.com/blog/2020/11/12/security-update.html"}],"sourceIdentifier":"cve-assign@fb.com","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"CWE-122"}],"source":"cve-assign@fb.com","type":"Secondary"},{"description":[{"lang":"en","value":"CWE-787"}],"source":"nvd@nist.gov","type":"Primary"}]}