CVE-2020-15350

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "descriptions": [{"lang": "en", "value": "RIOT 2020.04 has a buffer overflow in the base64 decoder. The decoding function base64_decode() uses an output buffer estimation function to compute the required buffer capacity and validate against the provided buffer size. The base64_estimate_decode_size() function calculates the expected decoded size with an arithmetic round-off error and does not take into account possible padding bytes. Due to this underestimation, it may be possible to craft base64 input that causes a buffer overflow."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2020-07-07T16:37:39.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://drive.google.com/file/d/1jMCAi8uawV1-an5uCghIxT2TEdxCE1Lk/view?usp=sharing"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/RIOT-OS/RIOT/pull/14400"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2020-15350", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "RIOT 2020.04 has a buffer overflow in the base64 decoder. The decoding function base64_decode() uses an output buffer estimation function to compute the required buffer capacity and validate against the provided buffer size. The base64_estimate_decode_size() function calculates the expected decoded size with an arithmetic round-off error and does not take into account possible padding bytes. Due to this underestimation, it may be possible to craft base64 input that causes a buffer overflow."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "https://drive.google.com/file/d/1jMCAi8uawV1-an5uCghIxT2TEdxCE1Lk/view?usp=sharing", "refsource": "MISC", "url": "https://drive.google.com/file/d/1jMCAi8uawV1-an5uCghIxT2TEdxCE1Lk/view?usp=sharing"}, {"name": "https://github.com/RIOT-OS/RIOT/pull/14400", "refsource": "MISC", "url": "https://github.com/RIOT-OS/RIOT/pull/14400"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T13:15:20.192Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://drive.google.com/file/d/1jMCAi8uawV1-an5uCghIxT2TEdxCE1Lk/view?usp=sharing"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/RIOT-OS/RIOT/pull/14400"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2020-15350", "datePublished": "2020-07-07T16:37:39.000Z", "dateReserved": "2020-06-26T00:00:00.000Z", "dateUpdated": "2024-08-04T13:15:20.192Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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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:o:riot-os:riot:2020.04:*:*:*:*:*:*:*", "matchCriteriaId": "C1CD36D1-6BE1-4262-9EC7-EFA988AE95E0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "RIOT 2020.04 has a buffer overflow in the base64 decoder. The decoding function base64_decode() uses an output buffer estimation function to compute the required buffer capacity and validate against the provided buffer size. The base64_estimate_decode_size() function calculates the expected decoded size with an arithmetic round-off error and does not take into account possible padding bytes. Due to this underestimation, it may be possible to craft base64 input that causes a buffer overflow."}, {"lang": "es", "value": "RIOT versi\u00f3n 2020.04, presenta un desbordamiento del b\u00fafer en el decodificador base64. La funci\u00f3n de decodificaci\u00f3n base64_decode() usa una funci\u00f3n de estimaci\u00f3n del b\u00fafer de salida para calcular la capacidad de b\u00fafer requerida y comprobarla con el tama\u00f1o del b\u00fafer proporcionado. La funci\u00f3n base64_estimate_decode_size() calcula el tama\u00f1o descodificado esperado con un error de redondeo aritm\u00e9tico y no toma en cuenta los posibles bytes de relleno. Debido a esta subestimaci\u00f3n, puede ser posible crear una entrada base64 que cause un desbordamiento del b\u00fafer"}], "id": "CVE-2020-15350", "lastModified": "2026-06-17T02:56:32.800", "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": "2020-07-07T17:15:10.530", "references": [{"source": "cve@mitre.org", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "url": "https://drive.google.com/file/d/1jMCAi8uawV1-an5uCghIxT2TEdxCE1Lk/view?usp=sharing"}, {"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/RIOT-OS/RIOT/pull/14400"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "url": "https://drive.google.com/file/d/1jMCAi8uawV1-an5uCghIxT2TEdxCE1Lk/view?usp=sharing"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/RIOT-OS/RIOT/pull/14400"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}, {"lang": "en", "value": "CWE-131"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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