CVE-2020-1917

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As a result, if the buffer was full, it would result in an out-of-bounds write. This issue affects HHVM versions prior to 4.56.3, all versions between 4.57.0 and 4.80.1, all versions between 4.81.0 and 4.93.1, and versions 4.94.0, 4.95.0, 4.96.0, 4.97.0, 4.98.0."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-122", "description": "Heap-based Buffer Overflow (CWE-122)", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-03-10T15:50:28.000Z", "orgId": "4fc57720-52fe-4431-a0fb-3d2c8747b827", "shortName": "facebook"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://hhvm.com/blog/2021/02/25/security-update.html"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/facebook/hhvm/commit/08193b7f0cd3910256e00d599f0f3eb2519c44ca"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve-assign@fb.com", "DATE_ASSIGNED": "2020-11-11", "ID": "CVE-2020-1917", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "HHVM", "version": {"version_data": [{"version_affected": "!>=", "version_value": "4.98.1"}, {"version_affected": "=", "version_value": "4.98.0"}, {"version_affected": "!>=", "version_value": "4.97.1"}, {"version_affected": "=", "version_value": "4.97.0"}, {"version_affected": "!>=", "version_value": "4.96.1"}, {"version_affected": "=", "version_value": "4.96.0"}, {"version_affected": "!>=", "version_value": "4.95.1"}, {"version_affected": "=", "version_value": "4.95.0"}, {"version_affected": "!>=", "version_value": "4.94.1"}, {"version_affected": "=", "version_value": "4.94.0"}, {"version_affected": "!>=", "version_value": "4.93.2"}, {"version_affected": ">=", "version_value": "4.81.0"}, {"version_affected": "!>=", "version_value": "4.80.2"}, {"version_affected": ">=", "version_value": "4.57.0"}, {"version_affected": "!>=", "version_value": "4.56.3"}, {"version_affected": "<", "version_value": "4.56.3"}]}}]}, "vendor_name": "Facebook"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "xbuf_format_converter, used as part of exif_read_data, was appending a terminating null character to the generated string, but was not using its standard append char function. 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This issue affects HHVM versions prior to 4.56.3, all versions between 4.57.0 and 4.80.1, all versions between 4.81.0 and 4.93.1, and versions 4.94.0, 4.95.0, 4.96.0, 4.97.0, 4.98.0."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Heap-based Buffer Overflow (CWE-122)"}]}]}, "references": {"reference_data": [{"name": "https://hhvm.com/blog/2021/02/25/security-update.html", "refsource": "MISC", "url": "https://hhvm.com/blog/2021/02/25/security-update.html"}, {"name": "https://github.com/facebook/hhvm/commit/08193b7f0cd3910256e00d599f0f3eb2519c44ca", "refsource": "MISC", "url": "https://github.com/facebook/hhvm/commit/08193b7f0cd3910256e00d599f0f3eb2519c44ca"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T06:53:59.921Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://hhvm.com/blog/2021/02/25/security-update.html"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/facebook/hhvm/commit/08193b7f0cd3910256e00d599f0f3eb2519c44ca"}]}]}, "cveMetadata": {"assignerOrgId": "4fc57720-52fe-4431-a0fb-3d2c8747b827", "assignerShortName": "facebook", "cveId": "CVE-2020-1917", "datePublished": "2021-03-10T15:50:28.000Z", "dateReserved": "2019-12-02T00:00:00.000Z", "dateUpdated": "2024-08-04T06:53:59.921Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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As a result, if the buffer was full, it would result in an out-of-bounds write. This issue affects HHVM versions prior to 4.56.3, all versions between 4.57.0 and 4.80.1, all versions between 4.81.0 and 4.93.1, and versions 4.94.0, 4.95.0, 4.96.0, 4.97.0, 4.98.0."}, {"lang": "es", "value": "La funci\u00f3n xbuf_format_converter, usada como parte de exif_read_data, estaba agregando un car\u00e1cter null de terminaci\u00f3n a la cadena generada, pero no estaba usando su funci\u00f3n est\u00e1ndar append char.&#xa0;Como resultado, si el b\u00fafer estuviera lleno, resultar\u00eda en una escritura fuera de l\u00edmites.&#xa0;Este problema afecta HHVM versiones anteriores a 4.56.3, todas las versiones entre 4.57.0 y 4.80.1, todas las versiones entre 4.81.0 y 4.93.1 y las versiones 4.94.0, 4.95.0, 4.96.0, 4.97.0 , 4.98.0"}], "id": "CVE-2020-1917", "lastModified": "2026-06-17T03:02:36.680", "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": "2021-03-10T16:15:14.313", "references": [{"source": "cve-assign@fb.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/facebook/hhvm/commit/08193b7f0cd3910256e00d599f0f3eb2519c44ca"}, {"source": "cve-assign@fb.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://hhvm.com/blog/2021/02/25/security-update.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/facebook/hhvm/commit/08193b7f0cd3910256e00d599f0f3eb2519c44ca"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://hhvm.com/blog/2021/02/25/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"}]}

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