CVE-2020-5256

{"containers": {"cna": {"affected": [{"product": "BookStack", "vendor": "BookStackApp", "versions": [{"status": "affected", "version": "< 0.25.5"}]}], "descriptions": [{"lang": "en", "value": "BookStack before version 0.25.5 has a vulnerability where a user could upload PHP files through image upload functions, which would allow them to execute code on the host system remotely. They would then have the permissions of the PHP process. This most impacts scenarios where non-trusted users are given permission to upload images in any area of the application. The issue was addressed in a series of patches in versions 0.25.3, 0.25.4 and 0.25.5. Users should upgrade to at least v0.25.5 to avoid this vulnerability."}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.9, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:L", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-95", "description": "CWE-95: Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2020-03-09T15:50:22.000Z", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/BookStackApp/BookStack/security/advisories/GHSA-g9rq-x4fj-f5hx"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/BookStackApp/BookStack/releases/tag/v0.25.3"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/BookStackApp/BookStack/releases/tag/v0.25.4"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/BookStackApp/BookStack/releases/tag/v0.25.5"}], "source": {"advisory": "GHSA-g9rq-x4fj-f5hx", "discovery": "UNKNOWN"}, "title": "Remote Code Execution Through Image Uploads in BookStack", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-advisories@github.com", "ID": "CVE-2020-5256", "STATE": "PUBLIC", "TITLE": "Remote Code Execution Through Image Uploads in BookStack"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "BookStack", "version": {"version_data": [{"version_value": "< 0.25.5"}]}}]}, "vendor_name": "BookStackApp"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "BookStack before version 0.25.5 has a vulnerability where a user could upload PHP files through image upload functions, which would allow them to execute code on the host system remotely. They would then have the permissions of the PHP process. This most impacts scenarios where non-trusted users are given permission to upload images in any area of the application. The issue was addressed in a series of patches in versions 0.25.3, 0.25.4 and 0.25.5. Users should upgrade to at least v0.25.5 to avoid this vulnerability."}]}, "impact": {"cvss": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.9, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:L", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-95: Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')"}]}]}, "references": {"reference_data": [{"name": "https://github.com/BookStackApp/BookStack/security/advisories/GHSA-g9rq-x4fj-f5hx", "refsource": "CONFIRM", "url": "https://github.com/BookStackApp/BookStack/security/advisories/GHSA-g9rq-x4fj-f5hx"}, {"name": "https://github.com/BookStackApp/BookStack/releases/tag/v0.25.3", "refsource": "MISC", "url": "https://github.com/BookStackApp/BookStack/releases/tag/v0.25.3"}, {"name": "https://github.com/BookStackApp/BookStack/releases/tag/v0.25.4", "refsource": "MISC", "url": "https://github.com/BookStackApp/BookStack/releases/tag/v0.25.4"}, {"name": "https://github.com/BookStackApp/BookStack/releases/tag/v0.25.5", "refsource": "MISC", "url": "https://github.com/BookStackApp/BookStack/releases/tag/v0.25.5"}]}, "source": {"advisory": "GHSA-g9rq-x4fj-f5hx", "discovery": "UNKNOWN"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T08:22:09.083Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/BookStackApp/BookStack/security/advisories/GHSA-g9rq-x4fj-f5hx"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/BookStackApp/BookStack/releases/tag/v0.25.3"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/BookStackApp/BookStack/releases/tag/v0.25.4"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/BookStackApp/BookStack/releases/tag/v0.25.5"}]}]}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2020-5256", "datePublished": "2020-03-09T15:50:22.000Z", "dateReserved": "2020-01-02T00:00:00.000Z", "dateUpdated": "2024-08-04T08:22:09.083Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "BookStack", "vendor": "BookStackApp", "versions": [{"status": "affected", "version": "< 0.25.5"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:bookstackapp:bookstack:*:*:*:*:*:*:*:*", "matchCriteriaId": "B8B4AD81-4EED-4873-A781-F389F361A132", "versionEndExcluding": "0.25.3", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "BookStack before version 0.25.5 has a vulnerability where a user could upload PHP files through image upload functions, which would allow them to execute code on the host system remotely. They would then have the permissions of the PHP process. This most impacts scenarios where non-trusted users are given permission to upload images in any area of the application. The issue was addressed in a series of patches in versions 0.25.3, 0.25.4 and 0.25.5. Users should upgrade to at least v0.25.5 to avoid this vulnerability."}, {"lang": "es", "value": "BookStack versiones anteriores a 0.25.5, presenta una vulnerabilidad donde un usuario puede cargar archivos PHP por medio de funciones de carga de im\u00e1genes, lo que le permitir\u00eda ejecutar c\u00f3digo sobre el sistema host remotamente. Luego tendr\u00edan los permisos del proceso de PHP. Esto impacta m\u00e1s a los escenarios donde los usuarios no confiables tienen permiso para cargar im\u00e1genes en cualquier \u00e1rea de la aplicaci\u00f3n. El problema fue abordado en una serie de parches en las versiones 0.25.3, 0.25.4 y 0.25.5. Los usuarios deben actualizar al menos a la versi\u00f3n v0.25.5 para evitar esta vulnerabilidad."}], "id": "CVE-2020-5256", "lastModified": "2026-06-17T03:21:08.630", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "COMPLETE", "baseScore": 9.0, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.9, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:L", "version": "3.1"}, "exploitabilityScore": 1.3, "impactScore": 6.0, "source": "security-advisories@github.com", "type": "Secondary"}, {"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": "2020-03-09T16:15:15.750", "references": [{"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/BookStackApp/BookStack/releases/tag/v0.25.3"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/BookStackApp/BookStack/releases/tag/v0.25.4"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/BookStackApp/BookStack/releases/tag/v0.25.5"}, {"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://github.com/BookStackApp/BookStack/security/advisories/GHSA-g9rq-x4fj-f5hx"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes"], "url": "https://github.com/BookStackApp/BookStack/releases/tag/v0.25.3"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes"], "url": "https://github.com/BookStackApp/BookStack/releases/tag/v0.25.4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes"], "url": "https://github.com/BookStackApp/BookStack/releases/tag/v0.25.5"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/BookStackApp/BookStack/security/advisories/GHSA-g9rq-x4fj-f5hx"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-95"}], "source": "security-advisories@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-434"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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