gsd-2021-25641
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
Each Apache Dubbo server will set a serialization id to tell the clients which serialization protocol it is working on. But for Dubbo versions before 2.7.8 or 2.6.9, an attacker can choose which serialization id the Provider will use by tampering with the byte preamble flags, aka, not following the server's instruction. This means that if a weak deserializer such as the Kryo and FST are somehow in code scope (e.g. if Kryo is somehow a part of a dependency), a remote unauthenticated attacker can tell the Provider to use the weak deserializer, and then proceed to exploit it.
Aliases
Aliases
CVE-2021-25641


To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-25641",
    "description": "Each Apache Dubbo server will set a serialization id to tell the clients which serialization protocol it is working on. But for Dubbo versions before 2.7.8 or 2.6.9, an attacker can choose which serialization id the Provider will use by tampering with the byte preamble flags, aka, not following the server\u0027s instruction. This means that if a weak deserializer such as the Kryo and FST are somehow in code scope (e.g. if Kryo is somehow a part of a dependency), a remote unauthenticated attacker can tell the Provider to use the weak deserializer, and then proceed to exploit it.",
    "id": "GSD-2021-25641"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-25641"
      ],
      "details": "Each Apache Dubbo server will set a serialization id to tell the clients which serialization protocol it is working on. But for Dubbo versions before 2.7.8 or 2.6.9, an attacker can choose which serialization id the Provider will use by tampering with the byte preamble flags, aka, not following the server\u0027s instruction. This means that if a weak deserializer such as the Kryo and FST are somehow in code scope (e.g. if Kryo is somehow a part of a dependency), a remote unauthenticated attacker can tell the Provider to use the weak deserializer, and then proceed to exploit it.",
      "id": "GSD-2021-25641",
      "modified": "2023-12-13T01:23:21.505370Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "AKA": "Serialization being tampered by attackers",
        "ASSIGNER": "security@apache.org",
        "ID": "CVE-2021-25641",
        "STATE": "PUBLIC",
        "TITLE": "Dubbo Zookeeper does not check serialization id"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Apache Dubbo",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "Apache Dubbo 2.7.x",
                          "version_value": "2.7.8"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_name": "Apache Dubbo 2.6.x",
                          "version_value": "2.6.9"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Apache Software Foundation"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "Each Apache Dubbo server will set a serialization id to tell the clients which serialization protocol it is working on. But for Dubbo versions before 2.7.8 or 2.6.9, an attacker can choose which serialization id the Provider will use by tampering with the byte preamble flags, aka, not following the server\u0027s instruction. This means that if a weak deserializer such as the Kryo and FST are somehow in code scope (e.g. if Kryo is somehow a part of a dependency), a remote unauthenticated attacker can tell the Provider to use the weak deserializer, and then proceed to exploit it."
          }
        ]
      },
      "generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "Remote Code Execution by tempering the serialization id on server side."
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://lists.apache.org/thread.html/r99ef7fa35585d3a68762de07e8d2b2bc48b8fa669a03e8d84b9673f3%40%3Cdev.dubbo.apache.org%3E",
            "refsource": "MISC",
            "url": "https://lists.apache.org/thread.html/r99ef7fa35585d3a68762de07e8d2b2bc48b8fa669a03e8d84b9673f3%40%3Cdev.dubbo.apache.org%3E"
          }
        ]
      },
      "source": {
        "discovery": "UNKNOWN"
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "[2.5.0,2.6.9)",
          "affected_versions": "All versions starting from 2.5.0 before 2.6.9",
          "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-502",
            "CWE-937"
          ],
          "date": "2022-03-21",
          "description": "Each Apache Dubbo server will set a serialization id to tell the clients which serialization protocol it is working on. But for Dubbo versions before 2.7.8 or 2.6.9, an attacker can choose which serialization id the Provider will use by tampering with the byte preamble flags, aka, not following the server\u0027s instruction. This means that if a weak deserializer such as the Kryo and FST are somehow in code scope (e.g. if Kryo is somehow a part of a dependency), a remote unauthenticated attacker can tell the Provider to use the weak deserializer, and then proceed to exploit it.",
          "fixed_versions": [
            "2.6.9"
          ],
          "identifier": "CVE-2021-25641",
          "identifiers": [
            "GHSA-v2rg-8cwr-75g8",
            "CVE-2021-25641"
          ],
          "not_impacted": "All versions before 2.5.0, all versions starting from 2.6.9",
          "package_slug": "maven/com.alibaba/dubbo",
          "pubdate": "2022-03-18",
          "solution": "Upgrade to version 2.6.9 or above.",
          "title": "Deserialization of Untrusted Data",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-25641",
            "https://github.com/advisories/GHSA-v2rg-8cwr-75g8"
          ],
          "uuid": "3c2ea51f-b9c4-4ee2-8f14-965f811a952b"
        },
        {
          "affected_range": "[2.5.0,2.6.9),[2.7.0,2.7.8)",
          "affected_versions": "All versions starting from 2.5.0 before 2.6.9, all versions starting from 2.7.0 before 2.7.8",
          "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-502",
            "CWE-937"
          ],
          "date": "2021-06-10",
          "description": "Each Apache Dubbo server will set a serialization id to tell the clients which serialization protocol it is working on. But for Dubbo, an attacker can choose which serialization id the Provider will use by tampering with the byte preamble flags, aka, not following the server\u0027s instruction. This means that if a weak deserializer such as the Kryo and FST are somehow in code scope (e.g. if Kryo is somehow a part of a dependency), a remote unauthenticated attacker can tell the Provider to use the weak deserializer, and then proceed to exploit it.",
          "fixed_versions": [
            "2.7.8"
          ],
          "identifier": "CVE-2021-25641",
          "identifiers": [
            "CVE-2021-25641"
          ],
          "not_impacted": "All versions before 2.5.0, all versions starting from 2.6.9 before 2.7.0, all versions starting from 2.7.8",
          "package_slug": "maven/org.apache.dubbo/dubbo",
          "pubdate": "2021-06-01",
          "solution": "Upgrade to version 2.7.8 or above.",
          "title": "Deserialization of Untrusted Data",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-25641"
          ],
          "uuid": "8fb47079-4bb6-48bc-aece-4a81f52416ac"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:apache:dubbo:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "2.6.9",
                "versionStartIncluding": "2.5.0",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:apache:dubbo:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "2.7.8",
                "versionStartIncluding": "2.7.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "security@apache.org",
          "ID": "CVE-2021-25641"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "Each Apache Dubbo server will set a serialization id to tell the clients which serialization protocol it is working on. But for Dubbo versions before 2.7.8 or 2.6.9, an attacker can choose which serialization id the Provider will use by tampering with the byte preamble flags, aka, not following the server\u0027s instruction. This means that if a weak deserializer such as the Kryo and FST are somehow in code scope (e.g. if Kryo is somehow a part of a dependency), a remote unauthenticated attacker can tell the Provider to use the weak deserializer, and then proceed to exploit it."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-502"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://lists.apache.org/thread.html/r99ef7fa35585d3a68762de07e8d2b2bc48b8fa669a03e8d84b9673f3%40%3Cdev.dubbo.apache.org%3E",
              "refsource": "MISC",
              "tags": [
                "Mailing List",
                "Vendor Advisory"
              ],
              "url": "https://lists.apache.org/thread.html/r99ef7fa35585d3a68762de07e8d2b2bc48b8fa669a03e8d84b9673f3%40%3Cdev.dubbo.apache.org%3E"
            }
          ]
        }
      },
      "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",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2021-06-10T13:28Z",
      "publishedDate": "2021-06-01T14:15Z"
    }
  }
}


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