CVE-2023-41050: AccessControl Information Disclosure Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-8xv7-89vj-q48c",
  "modified" : "2023-09-07T12:56:39Z",
  "published" : "2023-09-07T12:56:39Z",
  "aliases" : [ "CVE-2023-41050" ],
  "summary" : "Information disclosure in AccessControl",
  "details" : "### Impact\nPython's \"format\" functionality allows someone controlling the format string to \"read\" objects accessible (recursively) via attribute access and subscription from accessible objects. Those attribute accesses and subscriptions use Python's full blown `getattr` and `getitem`, not the policy restricted `AccessControl` variants `_getattr_` and `_getitem_`. This can lead to critical information disclosure.\n\n`AccessControl` already provides a safe variant for `str.format` and denies access to `string.Formatter`. However, `str.format_map` is still unsafe.\n\nAffected are all users who allow untrusted users to create `AccessControl` controlled Python code and execute it.\n\n### Patches\nA fix will be introduced in the versions 4.4, 5.8 and 6.2.\n\n### Workarounds\nThere are no workarounds.\n\n### References\nhttps://github.com/zopefoundation/RestrictedPython/security/advisories/GHSA-xjw2-6jm9-rf67 describes the corresponding problem for `RestrictedPython`.\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "AccessControl"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.4"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "Zope"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.8.9"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "AccessControl"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "5.0"
      }, {
        "fixed" : "5.8"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "AccessControl"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "6.0"
      }, {
        "fixed" : "6.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "Zope"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "5.0.0"
      }, {
        "fixed" : "5.8.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/zopefoundation/AccessControl/security/advisories/GHSA-8xv7-89vj-q48c"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-41050"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/zopefoundation/AccessControl/commit/6bc32692e0d4b8d5cf64eae3d19de987c7375bc9"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/zopefoundation/AccessControl"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-09-07T12:56:39Z",
    "nvd_published_at" : "2023-09-06T18:15:08Z"
  }
}