CVE-2021-21373

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If the packages are installed and used the attack escalates to untrusted code execution."}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:L", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-348", "description": "CWE-348 Use of Less Trusted Source", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-03-26T21:25:19.000Z", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://consensys.net/diligence/vulnerabilities/nim-insecure-ssl-tls-defaults-remote-code-execution/"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/nim-lang/nimble/blob/master/changelog.markdown#0130"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/nim-lang/security/security/advisories/GHSA-8w52-r35x-rgp8"}], "source": {"advisory": "GHSA-8w52-r35x-rgp8", "discovery": "UNKNOWN"}, "title": "Nimble falls back to insecure http url when fetching packages", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-advisories@github.com", "ID": "CVE-2021-21373", "STATE": "PUBLIC", "TITLE": "Nimble falls back to insecure http url when fetching packages"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "security", "version": {"version_data": [{"version_value": "< 1.2.10"}, {"version_value": ">= 1.4.0, < 1.4.4"}]}}]}, "vendor_name": "nim-lang"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Nimble is a package manager for the Nim programming language. In Nim release versions before versions 1.2.10 and 1.4.4, \"nimble refresh\" fetches a list of Nimble packages over HTTPS by default. In case of error it falls back to a non-TLS URL http://irclogs.nim-lang.org/packages.json. An attacker able to perform MitM can deliver a modified package list containing malicious software packages. If the packages are installed and used the attack escalates to untrusted code execution."}]}, "impact": {"cvss": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:L", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-348 Use of Less Trusted Source"}]}]}, "references": {"reference_data": [{"name": "https://consensys.net/diligence/vulnerabilities/nim-insecure-ssl-tls-defaults-remote-code-execution/", "refsource": "MISC", "url": "https://consensys.net/diligence/vulnerabilities/nim-insecure-ssl-tls-defaults-remote-code-execution/"}, {"name": "https://github.com/nim-lang/nimble/blob/master/changelog.markdown#0130", "refsource": "MISC", "url": "https://github.com/nim-lang/nimble/blob/master/changelog.markdown#0130"}, {"name": "https://github.com/nim-lang/security/security/advisories/GHSA-8w52-r35x-rgp8", "refsource": "CONFIRM", "url": "https://github.com/nim-lang/security/security/advisories/GHSA-8w52-r35x-rgp8"}]}, "source": {"advisory": "GHSA-8w52-r35x-rgp8", "discovery": "UNKNOWN"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T18:09:15.923Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://consensys.net/diligence/vulnerabilities/nim-insecure-ssl-tls-defaults-remote-code-execution/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/nim-lang/nimble/blob/master/changelog.markdown#0130"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/nim-lang/security/security/advisories/GHSA-8w52-r35x-rgp8"}]}]}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2021-21373", "datePublished": "2021-03-26T21:25:19.000Z", "dateReserved": "2020-12-22T00:00:00.000Z", "dateUpdated": "2024-08-03T18:09:15.923Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "security", "vendor": "nim-lang", "versions": [{"status": "affected", "version": "< 1.2.10"}, {"status": "affected", "version": ">= 1.4.0, < 1.4.4"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:nim-lang:nim:*:*:*:*:*:*:*:*", "matchCriteriaId": "895C273A-28A1-4592-8A50-9A8FAAD7D98C", "versionEndExcluding": "1.2.10", "vulnerable": true}, {"criteria": "cpe:2.3:a:nim-lang:nim:*:*:*:*:*:*:*:*", "matchCriteriaId": "FBDDF104-9FC9-4CED-9F87-26CF1DA2EF4E", "versionEndExcluding": "1.4.4", "versionStartIncluding": "1.4.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Nimble is a package manager for the Nim programming language. In Nim release versions before versions 1.2.10 and 1.4.4, \"nimble refresh\" fetches a list of Nimble packages over HTTPS by default. In case of error it falls back to a non-TLS URL http://irclogs.nim-lang.org/packages.json. An attacker able to perform MitM can deliver a modified package list containing malicious software packages. If the packages are installed and used the attack escalates to untrusted code execution."}, {"lang": "es", "value": "Nimble es un administrador de paquetes para el lenguaje de programaci\u00f3n Nim.&#xa0;En las versiones de lanzamiento de Nim anteriores a 1.2.10 y 1.4.4, la \"nimble refresh\" extrae una lista de paquetes de Nimble por medio de HTTPS por defecto.&#xa0;En caso de error, recurre a una URL no TLS http://irclogs.nim-lang.org/packages.json.&#xa0;Un atacante capaz de ejecutar MitM puede entregar una lista de paquetes modificada que contenga paquetes de software malicioso.&#xa0;Si los paquetes son instalados y usados, el ataque se convierte en una ejecuci\u00f3n de c\u00f3digo que no es confiable."}], "id": "CVE-2021-21373", "lastModified": "2026-06-17T03:35:24.930", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 4.3, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:L", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 5.3, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-03-26T22:15:12.773", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://consensys.net/diligence/vulnerabilities/nim-insecure-ssl-tls-defaults-remote-code-execution/"}, {"source": "security-advisories@github.com", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://github.com/nim-lang/nimble/blob/master/changelog.markdown#0130"}, {"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://github.com/nim-lang/security/security/advisories/GHSA-8w52-r35x-rgp8"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://consensys.net/diligence/vulnerabilities/nim-insecure-ssl-tls-defaults-remote-code-execution/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://github.com/nim-lang/nimble/blob/master/changelog.markdown#0130"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/nim-lang/security/security/advisories/GHSA-8w52-r35x-rgp8"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-348"}], "source": "security-advisories@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-295"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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