CVE-2021-21303

{"id": "CVE-2021-21303", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 3.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N", "authentication": "SINGLE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "NONE", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "LOW", "obtainAllPrivilege": false, "exploitabilityScore": 6.8, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 5.9, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 4.0, "exploitabilityScore": 1.5}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.8, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 4.0, "exploitabilityScore": 2.3}]}, "published": "2021-02-05T22:15:12.640", "references": [{"url": "https://github.com/helm/helm/commit/6ce9ba60b73013857e2e7c73d3f86ed70bc1ac9a", "tags": ["Patch", "Third Party Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/helm/helm/releases/tag/v3.5.2", "tags": ["Release Notes", "Third Party Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/helm/helm/security/advisories/GHSA-c38g-469g-cmgx", "tags": ["Third Party Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/helm/helm/commit/6ce9ba60b73013857e2e7c73d3f86ed70bc1ac9a", "tags": ["Patch", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://github.com/helm/helm/releases/tag/v3.5.2", "tags": ["Release Notes", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://github.com/helm/helm/security/advisories/GHSA-c38g-469g-cmgx", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-74"}]}], "descriptions": [{"lang": "en", "value": "Helm is open-source software which is essentially \"The Kubernetes Package Manager\". Helm is a tool for managing Charts. Charts are packages of pre-configured Kubernetes resources. In Helm from version 3.0 and before version 3.5.2, there a few cases where data loaded from potentially untrusted sources was not properly sanitized. When a SemVer in the `version` field of a chart is invalid, in some cases Helm allows the string to be used \"as is\" without sanitizing. Helm fails to properly sanitized some fields present on Helm repository `index.yaml` files. Helm does not properly sanitized some fields in the `plugin.yaml` file for plugins In some cases, Helm does not properly sanitize the fields in the `Chart.yaml` file. By exploiting these attack vectors, core maintainers were able to send deceptive information to a terminal screen running the `helm` command, as well as obscure or alter information on the screen. In some cases, we could send codes that terminals used to execute higher-order logic, like clearing a terminal screen. Further, during evaluation, the Helm maintainers discovered a few other fields that were not properly sanitized when read out of repository index files. This fix remedies all such cases, and once again enforces SemVer2 policies on version fields. All users of the Helm 3 should upgrade to the fixed version 3.5.2 or later. Those who use Helm as a library should verify that they either sanitize this data on their own, or use the proper Helm API calls to sanitize the data."}, {"lang": "es", "value": "\"Helm es un software de c\u00f3digo abierto que es esencialmente \"\"The Kubernetes Package Manager\"\". Helm es una herramienta para gestionar Gr\u00e1ficos. Los Gr\u00e1ficos son paquetes de recursos Kubernetes preconfigurados. En Helm versiones desde 3.0 y anteriores a 3.5.2, hab\u00eda algunos casos en los que los datos cargados desde fuentes potencialmente no confiables no eran saneados apropiadamente. Cuando un SemVer en el campo \"\"version\"\" de un gr\u00e1fico no es v\u00e1lido, en algunos casos Helm permite que la cadena sea usada \"\"as is\"\" sin sanearla. Helm no sanea apropiadamente algunos campos presentes en los archivos \"\"index.yaml\"\" del repositorio Helm. Helm no sanea correctamente algunos campos del fichero \"\"plugin.yaml\"\" para los plugins En algunos casos, Helm no sanea apropiadamente los campos del fichero \"\"Chart.yaml\"\". Al explotar estos vectores de ataque, los mantenedores principales fueron capaces de enviar informaci\u00f3n enga\u00f1osa a una pantalla de terminal que ejecutaba el comando \"\"helm\"\", as\u00ed como oscurecer o alterar la informaci\u00f3n en la pantalla. En algunos casos, pod\u00edamos enviar c\u00f3digos que los terminales usaban para ejecutar l\u00f3gica de orden superior, como borrar la pantalla de un terminal. Adem\u00e1s, durante la evaluaci\u00f3n, los mantenedores de Helm detectaron algunos otros campos que no estaban apropiadamente saneados cuando se le\u00edan desde los archivos de \u00edndice del repositorio. Esta correcci\u00f3n remedia todos estos casos, y una vez m\u00e1s aplica las pol\u00edticas de SemVer2 en los campos version. Todos los usuarios de Helm 3 deber\u00edan actualizar a la versi\u00f3n corregida 3.5.2 o posterior. Aquellos que usen Helm como una biblioteca deber\u00edan verificar que sanean estos datos por su cuenta, o que usan las llamadas apropiadas a la API de Helm para sanear los datos"}], "lastModified": "2024-11-21T05:47:58.833", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:helm:helm:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "643A27EB-FF84-4B1D-8FD1-A6CFA877D23C", "versionEndExcluding": "3.5.2", "versionStartIncluding": "3.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}