CVE-2020-10518

{"containers": {"cna": {"affected": [{"product": "GitHub Enterprise Server", "vendor": "GitHub", "versions": [{"lessThan": "2.19.21", "status": "affected", "version": "2.19", "versionType": "custom"}, {"lessThan": "2.20.15", "status": "affected", "version": "2.20", "versionType": "custom"}, {"lessThan": "2.21.6", "status": "affected", "version": "2.21", "versionType": "custom"}]}], "credits": [{"lang": "en", "value": "William Bowling"}], "descriptions": [{"lang": "en", "value": "A remote code execution vulnerability was identified in GitHub Enterprise Server that could be exploited when building a GitHub Pages site. User-controlled configuration of the underlying parsers used by GitHub Pages were not sufficiently restricted and made it possible to execute commands on the GitHub Enterprise Server instance. To exploit this vulnerability, an attacker would need permission to create and build a GitHub Pages site on the GitHub Enterprise Server instance. This vulnerability affected all versions of GitHub Enterprise Server prior to 2.22 and was fixed in 2.21.6, 2.20.15, and 2.19.21. The underlying issues contributing to this vulnerability were identified both internally and through the GitHub Security Bug Bounty program."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-77", "description": "CWE-77: Command Injection - Generic", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2020-08-27T21:55:11.000Z", "orgId": "82327ea3-741d-41e4-88f8-2cf9e791e760", "shortName": "GitHub_P"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://enterprise.github.com/releases/2.19.21/notes"}, {"tags": ["x_refsource_MISC"], "url": "https://enterprise.github.com/releases/2.20.15/notes"}, {"tags": ["x_refsource_MISC"], "url": "https://enterprise.github.com/releases/2.21.6/notes"}], "source": {"discovery": "EXTERNAL"}, "title": "Unsafe configuration options in GitHub Pages leading to remote code execution on GitHub Enterprise Server", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "product-cna@github.com", "ID": "CVE-2020-10518", "STATE": "PUBLIC", "TITLE": "Unsafe configuration options in GitHub Pages leading to remote code execution on GitHub Enterprise Server"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "GitHub Enterprise Server", "version": {"version_data": [{"version_affected": "<", "version_name": "2.19", "version_value": "2.19.21"}, {"version_affected": "<", "version_name": "2.20", "version_value": "2.20.15"}, {"version_affected": "<", "version_name": "2.21", "version_value": "2.21.6"}]}}]}, "vendor_name": "GitHub"}]}}, "credit": [{"lang": "eng", "value": "William Bowling"}], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "A remote code execution vulnerability was identified in GitHub Enterprise Server that could be exploited when building a GitHub Pages site. User-controlled configuration of the underlying parsers used by GitHub Pages were not sufficiently restricted and made it possible to execute commands on the GitHub Enterprise Server instance. To exploit this vulnerability, an attacker would need permission to create and build a GitHub Pages site on the GitHub Enterprise Server instance. This vulnerability affected all versions of GitHub Enterprise Server prior to 2.22 and was fixed in 2.21.6, 2.20.15, and 2.19.21. The underlying issues contributing to this vulnerability were identified both internally and through the GitHub Security Bug Bounty program."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-77: Command Injection - Generic"}]}]}, "references": {"reference_data": [{"name": "https://enterprise.github.com/releases/2.19.21/notes", "refsource": "MISC", "url": "https://enterprise.github.com/releases/2.19.21/notes"}, {"name": "https://enterprise.github.com/releases/2.20.15/notes", "refsource": "MISC", "url": "https://enterprise.github.com/releases/2.20.15/notes"}, {"name": "https://enterprise.github.com/releases/2.21.6/notes", "refsource": "MISC", "url": "https://enterprise.github.com/releases/2.21.6/notes"}]}, "source": {"discovery": "EXTERNAL"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T11:06:09.883Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://enterprise.github.com/releases/2.19.21/notes"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://enterprise.github.com/releases/2.20.15/notes"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://enterprise.github.com/releases/2.21.6/notes"}]}]}, "cveMetadata": {"assignerOrgId": "82327ea3-741d-41e4-88f8-2cf9e791e760", "assignerShortName": "GitHub_P", "cveId": "CVE-2020-10518", "datePublished": "2020-08-27T21:55:11.000Z", "dateReserved": "2020-03-12T00:00:00.000Z", "dateUpdated": "2024-08-04T11:06:09.883Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "GitHub Enterprise Server", "vendor": "GitHub", "versions": [{"lessThan": "2.19.21", "status": "affected", "version": "2.19", "versionType": "custom"}, {"lessThan": "2.20.15", "status": "affected", "version": "2.20", "versionType": "custom"}, {"lessThan": "2.21.6", "status": "affected", "version": "2.21", "versionType": "custom"}]}], "source": "product-cna@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:github:github:*:*:*:*:enterprise:*:*:*", "matchCriteriaId": "B069227C-199F-48D2-8A3A-04FAC5BAF966", "versionEndExcluding": "2.19.21", "vulnerable": true}, {"criteria": "cpe:2.3:a:github:github:*:*:*:*:enterprise:*:*:*", "matchCriteriaId": "99A2F224-E3D3-4E27-B7ED-57E544A45A8C", "versionEndExcluding": "2.20.15", "versionStartIncluding": "2.20.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:github:github:*:*:*:*:enterprise:*:*:*", "matchCriteriaId": "330B13CF-E0E2-40C1-9A9F-F90A0D6E5A3C", "versionEndExcluding": "2.21.6", "versionStartIncluding": "2.21.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A remote code execution vulnerability was identified in GitHub Enterprise Server that could be exploited when building a GitHub Pages site. User-controlled configuration of the underlying parsers used by GitHub Pages were not sufficiently restricted and made it possible to execute commands on the GitHub Enterprise Server instance. To exploit this vulnerability, an attacker would need permission to create and build a GitHub Pages site on the GitHub Enterprise Server instance. This vulnerability affected all versions of GitHub Enterprise Server prior to 2.22 and was fixed in 2.21.6, 2.20.15, and 2.19.21. The underlying issues contributing to this vulnerability were identified both internally and through the GitHub Security Bug Bounty program."}, {"lang": "es", "value": "Se identific\u00f3 una vulnerabilidad de ejecuci\u00f3n de c\u00f3digo remota en GitHub Enterprise Server que podr\u00eda ser explotada al crear un sitio GitHub Pages. La configuraci\u00f3n controlada por el usuario de los analizadores subyacentes usados por las p\u00e1ginas de GitHub no estaba lo suficientemente restringida y permit\u00eda ejecutar comandos en la instancia de GitHub Enterprise Server. Para explotar esta vulnerabilidad, un atacante necesitar\u00eda permiso para crear y construir un sitio GitHub Pages en la instancia de GitHub Enterprise Server. Esta vulnerabilidad afect\u00f3 a todas las versiones de GitHub Enterprise Server anteriores a la 2.22 y se corrigi\u00f3 en las versiones 2.21.6, 2.20.15 y 2.19.21. Los problemas subyacentes que contribuyen a esta vulnerabilidad se identificaron tanto internamente como por medio del programa GitHub Security Bug Bounty"}], "id": "CVE-2020-10518", "lastModified": "2026-06-17T02:47:57.320", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 6.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.0, "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": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-08-27T22:15:09.833", "references": [{"source": "product-cna@github.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://enterprise.github.com/releases/2.19.21/notes"}, {"source": "product-cna@github.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://enterprise.github.com/releases/2.20.15/notes"}, {"source": "product-cna@github.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://enterprise.github.com/releases/2.21.6/notes"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://enterprise.github.com/releases/2.19.21/notes"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://enterprise.github.com/releases/2.20.15/notes"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://enterprise.github.com/releases/2.21.6/notes"}], "sourceIdentifier": "product-cna@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-77"}], "source": "product-cna@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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