GSD-2018-1000210

Vulnerability from gsd - Updated: 2023-12-13 01:22
Details
YamlDotNet version 4.3.2 and earlier contains a Insecure Direct Object Reference vulnerability in The default behavior of Deserializer.Deserialize() will deserialize user-controlled types in the line "currentType = Type.GetType(nodeEvent.Tag.Substring(1), throwOnError: false);" and blindly instantiates them. that can result in Code execution in the context of the running process. This attack appear to be exploitable via Victim must parse a specially-crafted YAML file. This vulnerability appears to have been fixed in 5.0.0.
Aliases
Aliases
CVE-2018-1000210
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{
  "GSD": {
    "alias": "CVE-2018-1000210",
    "description": "YamlDotNet version 4.3.2 and earlier contains a Insecure Direct Object Reference vulnerability in The default behavior of Deserializer.Deserialize() will deserialize user-controlled types in the line \"currentType = Type.GetType(nodeEvent.Tag.Substring(1), throwOnError: false);\" and blindly instantiates them. that can result in Code execution in the context of the running process. This attack appear to be exploitable via Victim must parse a specially-crafted YAML file. This vulnerability appears to have been fixed in 5.0.0.",
    "id": "GSD-2018-1000210"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2018-1000210"
      ],
      "details": "YamlDotNet version 4.3.2 and earlier contains a Insecure Direct Object Reference vulnerability in The default behavior of Deserializer.Deserialize() will deserialize user-controlled types in the line \"currentType = Type.GetType(nodeEvent.Tag.Substring(1), throwOnError: false);\" and blindly instantiates them. that can result in Code execution in the context of the running process. This attack appear to be exploitable via Victim must parse a specially-crafted YAML file. This vulnerability appears to have been fixed in 5.0.0.",
      "id": "GSD-2018-1000210",
      "modified": "2023-12-13T01:22:27.785256Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "DATE_ASSIGNED": "2018-07-10T20:50:24.885805",
        "DATE_REQUESTED": "2018-07-10T19:20:16",
        "ID": "CVE-2018-1000210",
        "REQUESTER": "kurt.boberg@docusign.com",
        "STATE": "PUBLIC"
      },
      "affects": {
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            {
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            "value": "YamlDotNet version 4.3.2 and earlier contains a Insecure Direct Object Reference vulnerability in The default behavior of Deserializer.Deserialize() will deserialize user-controlled types in the line \"currentType = Type.GetType(nodeEvent.Tag.Substring(1), throwOnError: false);\" and blindly instantiates them. that can result in Code execution in the context of the running process. This attack appear to be exploitable via Victim must parse a specially-crafted YAML file. This vulnerability appears to have been fixed in 5.0.0."
          }
        ]
      },
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      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/aaubry/YamlDotNet#version-500",
            "refsource": "CONFIRM",
            "url": "https://github.com/aaubry/YamlDotNet#version-500"
          },
          {
            "name": "https://github.com/aaubry/YamlDotNet/blob/f96b7cc40a0498f8bafdeb49df3aa23aa2c60993/YamlDotNet/Serialization/NodeTypeResolvers/TypeNameInTagNodeTypeResolver.cs#L35",
            "refsource": "CONFIRM",
            "url": "https://github.com/aaubry/YamlDotNet/blob/f96b7cc40a0498f8bafdeb49df3aa23aa2c60993/YamlDotNet/Serialization/NodeTypeResolvers/TypeNameInTagNodeTypeResolver.cs#L35"
          }
        ]
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "(,4.3.2]",
          "affected_versions": "All versions up to 4.3.2",
          "cvss_v2": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "cvss_v3": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "cwe_ids": [
            "CWE-1035",
            "CWE-502",
            "CWE-639",
            "CWE-78",
            "CWE-937"
          ],
          "date": "2021-09-17",
          "description": "YamlDotNet version 4.3.2 and earlier contains a Insecure Direct Object Reference vulnerability in The default behavior of Deserializer.Deserialize() will deserialize user-controlled types in the line \"currentType = Type.GetType(nodeEvent.Tag.Substring(1), throwOnError: false);\" and blindly instantiates them. that can result in Code execution in the context of the running process. This attack appear to be exploitable via Victim must parse a specially-crafted YAML file. This vulnerability appears to have been fixed in 5.0.0.",
          "fixed_versions": [
            "5.0.0"
          ],
          "identifier": "CVE-2018-1000210",
          "identifiers": [
            "GHSA-rpch-cqj9-h65r",
            "CVE-2018-1000210"
          ],
          "not_impacted": "All versions after 4.3.2",
          "package_slug": "nuget/YamlDotNet.Signed",
          "pubdate": "2018-10-16",
          "solution": "Upgrade to version 5.0.0 or above.",
          "title": "Authorization Bypass Through User-Controlled Key",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2018-1000210",
            "https://github.com/aaubry/YamlDotNet#version-500",
            "https://github.com/aaubry/YamlDotNet/blob/f96b7cc40a0498f8bafdeb49df3aa23aa2c60993/YamlDotNet/Serialization/NodeTypeResolvers/TypeNameInTagNodeTypeResolver.cs#L35",
            "https://github.com/advisories/GHSA-rpch-cqj9-h65r"
          ],
          "uuid": "e9fd5895-39ce-4156-bd57-ecf4422f5e43"
        },
        {
          "affected_range": "(,5.0.0)",
          "affected_versions": "All versions before 5.0.0",
          "cvss_v2": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "cvss_v3": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "cwe_ids": [
            "CWE-1035",
            "CWE-639",
            "CWE-502",
            "CWE-937"
          ],
          "date": "2020-08-24",
          "description": "YamlDotNet includes a deserialization vulnerability that can lead to code execution.",
          "fixed_versions": [
            "5.0.0"
          ],
          "identifier": "CVE-2018-1000210",
          "identifiers": [
            "CVE-2018-1000210"
          ],
          "not_impacted": "All versions starting from 5.0.0",
          "package_slug": "nuget/YamlDotNet",
          "pubdate": "2018-07-13",
          "solution": "Upgrade to version 5.0.0 or above.",
          "title": "Deserialization of Untrusted Data",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2018-1000210"
          ],
          "uuid": "d58e0726-2ca2-4c14-b7bc-151b268f12f0"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:yamldotnet_project:yamldotnet:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "4.3.2",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
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      "cve": {
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          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2018-1000210"
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        "description": {
          "description_data": [
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              "value": "YamlDotNet version 4.3.2 and earlier contains a Insecure Direct Object Reference vulnerability in The default behavior of Deserializer.Deserialize() will deserialize user-controlled types in the line \"currentType = Type.GetType(nodeEvent.Tag.Substring(1), throwOnError: false);\" and blindly instantiates them. that can result in Code execution in the context of the running process. This attack appear to be exploitable via Victim must parse a specially-crafted YAML file. This vulnerability appears to have been fixed in 5.0.0."
            }
          ]
        },
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          "problemtype_data": [
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        "references": {
          "reference_data": [
            {
              "name": "https://github.com/aaubry/YamlDotNet/blob/f96b7cc40a0498f8bafdeb49df3aa23aa2c60993/YamlDotNet/Serialization/NodeTypeResolvers/TypeNameInTagNodeTypeResolver.cs#L35",
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              "tags": [
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              "url": "https://github.com/aaubry/YamlDotNet/blob/f96b7cc40a0498f8bafdeb49df3aa23aa2c60993/YamlDotNet/Serialization/NodeTypeResolvers/TypeNameInTagNodeTypeResolver.cs#L35"
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      },
      "impact": {
        "baseMetricV2": {
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 6.8,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 8.6,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": true
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.0"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2020-08-24T17:37Z",
      "publishedDate": "2018-07-13T18:29Z"
    }
  }
}


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  • 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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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