CVE-2021-32811 (GCVE-0-2021-32811)

Vulnerability from cvelistv5 – Published: 2021-08-02 21:55 – Updated: 2024-08-03 23:33
VLAI?
Summary
Zope is an open-source web application server. Zope versions prior to versions 4.6.3 and 5.3 have a remote code execution security issue. In order to be affected, one must use Python 3 for one's Zope deployment, run Zope 4 below version 4.6.3 or Zope 5 below version 5.3, and have the optional `Products.PythonScripts` add-on package installed. By default, one must have the admin-level Zope "Manager" role to add or edit Script (Python) objects through the web. Only sites that allow untrusted users to add/edit these scripts through the web are at risk. Zope releases 4.6.3 and 5.3 are not vulnerable. As a workaround, a site administrator can restrict adding/editing Script (Python) objects through the web using the standard Zope user/role permission mechanisms. Untrusted users should not be assigned the Zope Manager role and adding/editing these scripts through the web should be restricted to trusted users only. This is the default configuration in Zope.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-915 - Improperly Controlled Modification of Dynamically-Determined Object Attributes
Assigner
References
Impacted products
Vendor Product Version
zopefoundation Zope Affected: >= 4.0, < 4.6.3
Affected: >= 5.0, < 5.3
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As a workaround, a site administrator can restrict adding/editing Script (Python) objects through the web using the standard Zope user/role permission mechanisms. Untrusted users should not be assigned the Zope Manager role and adding/editing these scripts through the web should be restricted to trusted users only. This is the default configuration in Zope.\"},{\"lang\":\"es\",\"value\":\"Zope es un servidor de aplicaciones web de c\u00f3digo abierto. Zope versiones anteriores a 4.6.3 y 5.3 tienen un problema de seguridad de ejecuci\u00f3n de c\u00f3digo remota . Para ser afectado, uno debe usar Python 3 para su despliegue de Zope, ejecutar Zope 4 por debajo de la versi\u00f3n 4.6.3 o Zope 5 por debajo de la versi\u00f3n 5.3, y tener el paquete adicional opcional \\\"Products.PythonScripts\\\" instalado. Por defecto, hay que tener el rol de \\\"Manager\\\" de Zope a nivel de administrador para a\u00f1adir o editar objetos Script (Python) mediante la web. S\u00f3lo los sitios que permiten a usuarios no confiables a\u00f1adir/editar estos scripts mediante la web est\u00e1n en riesgo. Zope versiones 4.6.3 y 5.3 no son vulnerables. Como soluci\u00f3n, el administrador del sitio puede restringir la adici\u00f3n/edici\u00f3n de objetos Script (Python) mediante la web usando los mecanismos est\u00e1ndar de permisos de usuario/rol de Zope. Los usuarios que no son de confianza no se les deber\u00eda asignar el rol de Administrador de Zope y a\u00f1adir/editar estos scripts mediante la web deber\u00eda estar restringido s\u00f3lo a usuarios de confianza. Esta es la configuraci\u00f3n predeterminada en Zope\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.6,\"impactScore\":5.9},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.2,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.2,\"impactScore\":5.9}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:S/C:P/I:P/A:P\",\"baseScore\":6.5,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"SINGLE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.0,\"impactScore\":6.4,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-915\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-1321\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:zope:accesscontrol:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.0\",\"versionEndExcluding\":\"4.3\",\"matchCriteriaId\":\"8538D35C-EA69-4A87-8DBB-D6522F8C7422\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:zope:accesscontrol:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.0\",\"versionEndExcluding\":\"5.2\",\"matchCriteriaId\":\"34F2C931-DCB6-4326-BBDF-2E9B13946D55\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:zope:zope:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.0\",\"versionEndExcluding\":\"4.6.3\",\"matchCriteriaId\":\"30CF6645-50E3-42F0-8E21-8476237210C8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:zope:zope:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.0\",\"versionEndExcluding\":\"5.3\",\"matchCriteriaId\":\"63A55EE7-7617-407F-83AB-219EA3769E61\"}]}]}],\"references\":[{\"url\":\"https://github.com/zopefoundation/AccessControl/security/advisories/GHSA-qcx9-j53g-ccgf\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://github.com/zopefoundation/Zope/commit/f72a18dda8e9bf2aedb46168761668464a4be988\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/zopefoundation/Zope/security/advisories/GHSA-g4gq-j4p2-j8fr\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://github.com/zopefoundation/AccessControl/security/advisories/GHSA-qcx9-j53g-ccgf\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://github.com/zopefoundation/Zope/commit/f72a18dda8e9bf2aedb46168761668464a4be988\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/zopefoundation/Zope/security/advisories/GHSA-g4gq-j4p2-j8fr\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}"
  }
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.