GSD-2021-41170

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
neoan3-apps/template is a neoan3 minimal template engine. Versions prior to 1.1.1 have allowed for passing in closures directly into the template engine. As a result values that are callable are executed by the template engine. The issue arises if a value has the same name as a method or function in scope and can therefore be executed either by mistake or maliciously. In theory all users of the package are affected as long as they either deal with direct user input or database values. A multi-step attack on is therefore plausible. Version 1.1.1 has addressed this vulnerability. Unfortunately only working with hardcoded values is safe in prior versions. As this likely defeats the purpose of a template engine, please upgrade.
Aliases
Aliases
CVE-2021-41170
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{
  "GSD": {
    "alias": "CVE-2021-41170",
    "description": "neoan3-apps/template is a neoan3 minimal template engine. Versions prior to 1.1.1 have allowed for passing in closures directly into the template engine. As a result values that are callable are executed by the template engine. The issue arises if a value has the same name as a method or function in scope and can therefore be executed either by mistake or maliciously. In theory all users of the package are affected as long as they either deal with direct user input or database values. A multi-step attack on is therefore plausible. Version 1.1.1 has addressed this vulnerability. Unfortunately only working with hardcoded values is safe in prior versions. As this likely defeats the purpose of a template engine, please upgrade.",
    "id": "GSD-2021-41170"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-41170"
      ],
      "details": "neoan3-apps/template is a neoan3 minimal template engine. Versions prior to 1.1.1 have allowed for passing in closures directly into the template engine. As a result values that are callable are executed by the template engine. The issue arises if a value has the same name as a method or function in scope and can therefore be executed either by mistake or maliciously. In theory all users of the package are affected as long as they either deal with direct user input or database values. A multi-step attack on is therefore plausible. Version 1.1.1 has addressed this vulnerability. Unfortunately only working with hardcoded values is safe in prior versions. As this likely defeats the purpose of a template engine, please upgrade.",
      "id": "GSD-2021-41170",
      "modified": "2023-12-13T01:23:27.029109Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2021-41170",
        "STATE": "PUBLIC",
        "TITLE": "Evaluation of closures can lead to execution of methods \u0026 functions in current program scope"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "neoan3-template",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "\u003c 1.1.1"
                        }
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              },
              "vendor_name": "sroehrl"
            }
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      "data_version": "4.0",
      "description": {
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            "value": "neoan3-apps/template is a neoan3 minimal template engine. Versions prior to 1.1.1 have allowed for passing in closures directly into the template engine. As a result values that are callable are executed by the template engine. The issue arises if a value has the same name as a method or function in scope and can therefore be executed either by mistake or maliciously. In theory all users of the package are affected as long as they either deal with direct user input or database values. A multi-step attack on is therefore plausible. Version 1.1.1 has addressed this vulnerability. Unfortunately only working with hardcoded values is safe in prior versions. As this likely defeats the purpose of a template engine, please upgrade."
          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-277: Insecure Inherited Permissions"
              }
            ]
          },
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component (\u0027Injection\u0027)"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/sroehrl/neoan3-template/security/advisories/GHSA-3v56-q6r6-4gcw",
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            "url": "https://github.com/sroehrl/neoan3-template/security/advisories/GHSA-3v56-q6r6-4gcw"
          },
          {
            "name": "https://github.com/sroehrl/neoan3-template/issues/8",
            "refsource": "MISC",
            "url": "https://github.com/sroehrl/neoan3-template/issues/8"
          },
          {
            "name": "https://github.com/sroehrl/neoan3-template/commit/4a2c9570f071d3c8f4ac790007599cba20e16934",
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            "url": "https://github.com/sroehrl/neoan3-template/commit/4a2c9570f071d3c8f4ac790007599cba20e16934"
          }
        ]
      },
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        "advisory": "GHSA-3v56-q6r6-4gcw",
        "discovery": "UNKNOWN"
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c1.1.1",
          "affected_versions": "All versions before 1.1.1",
          "cvss_v2": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "cwe_ids": [
            "CWE-1035",
            "CWE-74",
            "CWE-937"
          ],
          "date": "2021-11-17",
          "description": "neoan3-apps/template allows for passing in closures directly into the template engine. As a result, values that are callable are executed by the template engine. The issue arises if a value has the same name as a method or function in scope and can therefore be executed either by mistake or maliciously. In theory all users of the package are affected as long as they either deal with direct user input or database values.",
          "fixed_versions": [
            "1.1.1"
          ],
          "identifier": "CVE-2021-41170",
          "identifiers": [
            "CVE-2021-41170",
            "GHSA-3v56-q6r6-4gcw"
          ],
          "not_impacted": "All versions starting from 1.1.1",
          "package_slug": "packagist/neoan3-apps/template",
          "pubdate": "2021-11-08",
          "solution": "Upgrade to version 1.1.1 or above.",
          "title": "Incorrect Permission Assignment for Critical Resource",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-41170",
            "https://github.com/sroehrl/neoan3-template/security/advisories/GHSA-3v56-q6r6-4gcw",
            "https://github.com/sroehrl/neoan3-template/issues/8",
            "https://github.com/sroehrl/neoan3-template/commit/4a2c9570f071d3c8f4ac790007599cba20e16934"
          ],
          "uuid": "ad29dc03-cee5-4707-a78e-a27f1ed93888"
        }
      ]
    },
    "nvd.nist.gov": {
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        "nodes": [
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                "cpe_name": [],
                "versionEndExcluding": "1.1.1",
                "vulnerable": true
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        "data_version": "4.0",
        "description": {
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              "value": "neoan3-apps/template is a neoan3 minimal template engine. Versions prior to 1.1.1 have allowed for passing in closures directly into the template engine. As a result values that are callable are executed by the template engine. The issue arises if a value has the same name as a method or function in scope and can therefore be executed either by mistake or maliciously. In theory all users of the package are affected as long as they either deal with direct user input or database values. A multi-step attack on is therefore plausible. Version 1.1.1 has addressed this vulnerability. Unfortunately only working with hardcoded values is safe in prior versions. As this likely defeats the purpose of a template engine, please upgrade."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
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                  "value": "CWE-74"
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                  "value": "CWE-277"
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        "references": {
          "reference_data": [
            {
              "name": "https://github.com/sroehrl/neoan3-template/security/advisories/GHSA-3v56-q6r6-4gcw",
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            },
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        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 7.5,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "HIGH",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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          "exploitabilityScore": 3.9,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2021-11-17T13:16Z",
      "publishedDate": "2021-11-08T19:15Z"
    }
  }
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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