FKIE_CVE-2021-25122

Vulnerability from fkie_nvd - Published: 2021-03-01 12:15 - Updated: 2026-10-08 22:17
Summary
When responding to new h2c connection requests, Apache Tomcat versions 10.0.0-M1 to 10.0.0, 9.0.0.M1 to 9.0.41 and 8.5.0 to 8.5.61 could duplicate request headers and a limited amount of request body from one request to another meaning user A and user B could both see the results of user A's request.
References
security@apache.orghttp://www.openwall.com/lists/oss-security/2021/03/01/1Mailing List, Third Party Advisory
security@apache.orghttps://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.apache.org%3E
security@apache.orghttps://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.tomcat.apache.org%3EMailing List, Vendor Advisory
security@apache.orghttps://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.tomcat.apache.org%3EMailing List, Vendor Advisory
security@apache.orghttps://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.tomcat.apache.org%3EMailing List, Vendor Advisory
security@apache.orghttps://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.tomcat.apache.org%3EMailing List, Vendor Advisory
security@apache.orghttps://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.tomcat.apache.org%3EMailing List, Vendor Advisory
security@apache.orghttps://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.tomcat.apache.org%3EMailing List, Vendor Advisory
security@apache.orghttps://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.tomcat.apache.org%3EMailing List, Vendor Advisory
security@apache.orghttps://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.tomcat.apache.org%3EMailing List, Vendor Advisory
security@apache.orghttps://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cdev.tomcat.apache.org%3E
security@apache.orghttps://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cusers.tomcat.apache.org%3E
security@apache.orghttps://lists.apache.org/thread.html/rcd90bf36b1877e1310b87ecd14ed7bbb15da52b297efd9f0e7253a3b%40%3Cusers.tomcat.apache.org%3E
security@apache.orghttps://lists.apache.org/thread.html/rd0463f9a5cbc02a485404c4b990f0da452e5ac5c237808edba11c947%40%3Cusers.tomcat.apache.org%3E
security@apache.orghttps://lists.apache.org/thread.html/rf6d5d57b114678d8898005faef31e9fd6d7c981fcc4ccfc3bc272fc9%40%3Cdev.tomcat.apache.org%3E
security@apache.orghttps://lists.debian.org/debian-lts-announce/2021/03/msg00018.htmlMailing List, Third Party Advisory
security@apache.orghttps://security.gentoo.org/glsa/202208-34Third Party Advisory
security@apache.orghttps://security.netapp.com/advisory/ntap-20210409-0002/Third Party Advisory
security@apache.orghttps://www.debian.org/security/2021/dsa-4891Third Party Advisory
security@apache.orghttps://www.oracle.com//security-alerts/cpujul2021.htmlPatch, Third Party Advisory
security@apache.orghttps://www.oracle.com/security-alerts/cpujan2022.htmlPatch, Third Party Advisory
security@apache.orghttps://www.oracle.com/security-alerts/cpuoct2021.htmlPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2021/03/01/1Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.apache.org%3E
af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.tomcat.apache.org%3EMailing List, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.tomcat.apache.org%3EMailing List, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.tomcat.apache.org%3EMailing List, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.tomcat.apache.org%3EMailing List, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.tomcat.apache.org%3EMailing List, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.tomcat.apache.org%3EMailing List, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.tomcat.apache.org%3EMailing List, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.tomcat.apache.org%3EMailing List, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cdev.tomcat.apache.org%3E
af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cusers.tomcat.apache.org%3E
af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/rcd90bf36b1877e1310b87ecd14ed7bbb15da52b297efd9f0e7253a3b%40%3Cusers.tomcat.apache.org%3E
af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/rd0463f9a5cbc02a485404c4b990f0da452e5ac5c237808edba11c947%40%3Cusers.tomcat.apache.org%3E
af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/rf6d5d57b114678d8898005faef31e9fd6d7c981fcc4ccfc3bc272fc9%40%3Cdev.tomcat.apache.org%3E
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2021/03/msg00018.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202208-34Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20210409-0002/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2021/dsa-4891Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com//security-alerts/cpujul2021.htmlPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpujan2022.htmlPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpuoct2021.htmlPatch, Third Party Advisory

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Apache Tomcat",
          "vendor": "Apache Software Foundation",
          "versions": [
            {
              "lessThan": "10.0.2",
              "status": "affected",
              "version": "Apache Tomcat 10",
              "versionType": "custom"
            },
            {
              "lessThan": "9.0.42",
              "status": "affected",
              "version": "Apache Tomcat 9",
              "versionType": "custom"
            },
            {
              "lessThan": "8.5.62",
              "status": "affected",
              "version": "Apache Tomcat 8.5",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "security@apache.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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              "matchCriteriaId": "B4ABB491-6750-457E-B5A4-67C1146CB15F",
              "versionEndIncluding": "8.5.61",
              "versionStartIncluding": "8.5.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A9DFCBAF-1583-4C2F-8776-76F4DCB582B5",
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            },
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            },
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            },
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            },
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            },
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            },
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            },
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              "criteria": "cpe:2.3:a:apache:tomcat:10.0.0:-:*:*:*:*:*:*",
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            },
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            },
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            },
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            },
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            },
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            },
            {
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            },
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            },
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              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
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              "vulnerable": true
            },
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          ],
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      ]
    },
    {
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            },
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              "vulnerable": true
            },
            {
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            {
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            },
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              "vulnerable": true
            },
            {
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              "matchCriteriaId": "46E7237C-00BD-4490-96C3-A8EAE4CE2C0B",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:oracle:database:19c:*:*:*:enterprise:*:*:*",
              "matchCriteriaId": "C1E05472-8F3A-4E46-90E5-50EA6D555FDC",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:oracle:database:21c:*:*:*:enterprise:*:*:*",
              "matchCriteriaId": "02E34416-E767-4F61-8D2C-0D0202351F91",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:oracle:graph_server_and_client:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "38532AE4-9C9F-4182-A791-FCD2BE27DEA6",
              "versionEndExcluding": "21.3.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:oracle:graph_server_and_client:21.3.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "715F9279-F31E-4CC0-A105-95A008EACBA6",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "82EA4BA7-C38B-4AF3-8914-9E3D089EBDD4",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:oracle:instantis_enterprisetrack:17.2:*:*:*:*:*:*:*",
              "matchCriteriaId": "B9C9BC66-FA5F-4774-9BDA-7AB88E2839C4",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:oracle:instantis_enterprisetrack:17.3:*:*:*:*:*:*:*",
              "matchCriteriaId": "7F69B9A5-F21B-4904-9F27-95C0F7A628E3",
              "vulnerable": true
            },
            {
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              "matchCriteriaId": "A2E3E923-E2AD-400D-A618-26ADF7F841A2",
              "vulnerable": true
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              "vulnerable": true
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              "versionEndIncluding": "8.0.23",
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              "matchCriteriaId": "90605BF7-9C9B-4AC2-83B6-3666C5A15D43",
              "versionEndIncluding": "21.9",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "When responding to new h2c connection requests, Apache Tomcat versions 10.0.0-M1 to 10.0.0, 9.0.0.M1 to 9.0.41 and 8.5.0 to 8.5.61 could duplicate request headers and a limited amount of request body from one request to another meaning user A and user B could both see the results of user A\u0027s request."
    },
    {
      "lang": "es",
      "value": "Cuando se responde a nuevas peticiones de conexi\u00f3n h2c, Apache Tomcat versiones 10.0.0-M1 hasta 10.0.0, versiones 9.0.0.M1 hasta 9.0.41 y versiones 8.5.0 hasta 8.5.61, podr\u00edan duplicar los encabezados de petici\u00f3n y una cantidad limitada del cuerpo de petici\u00f3n de una petici\u00f3n a otra, lo que significa que el usuario A y el usuario B podr\u00edan visualizar los resultados de la petici\u00f3n del usuario A"
    }
  ],
  "id": "CVE-2021-25122",
  "lastModified": "2026-10-08T22:17:08.263",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 5.0,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-25122",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-10-08T21:04:41.948705Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2021-03-01T12:15:13.793",
  "references": [
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    },
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  ],
  "sourceIdentifier": "security@apache.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ],
      "source": "security@apache.org",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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