CVE-2024-23944 (GCVE-0-2024-23944)

Vulnerability from cvelistv5 – Published: 2024-03-15 10:26 – Updated: 2025-07-03 14:52
VLAI
Title
Apache ZooKeeper: Information disclosure in persistent watcher handling
Summary
Information disclosure in persistent watchers handling in Apache ZooKeeper due to missing ACL check. It allows an attacker to monitor child znodes by attaching a persistent watcher (addWatch command) to a parent which the attacker has already access to. ZooKeeper server doesn't do ACL check when the persistent watcher is triggered and as a consequence, the full path of znodes that a watch event gets triggered upon is exposed to the owner of the watcher. It's important to note that only the path is exposed by this vulnerability, not the data of znode, but since znode path can contain sensitive information like user name or login ID, this issue is potentially critical. Users are recommended to upgrade to version 3.9.2, 3.8.4 which fixes the issue.
Severity
5.3 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache ZooKeeper Affected: 3.9.0 , ≤ 3.9.1 (maven)
Affected: 3.8.0 , ≤ 3.8.3 (maven)
Affected: 3.6.0 , ≤ 3.7.2 (maven)
Create a notification for this product.
Credits
周吉安(寒泉) <zhoujian.zja@alibaba-inc.com>
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "LOW",
              "baseScore": 5.3,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-23944",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-03-19T15:31:26.291137Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-11-15T21:06:11.154Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-01T23:13:08.588Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.apache.org/thread/96s5nqssj03rznz9hv58txdb2k1lr79k"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2024/03/14/2"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://repo.maven.apache.org/maven2",
          "defaultStatus": "unaffected",
          "packageName": "org.apache.zookeeper:zookeeper",
          "product": "Apache ZooKeeper",
          "vendor": "Apache Software Foundation",
          "versions": [
            {
              "lessThanOrEqual": "3.9.1",
              "status": "affected",
              "version": "3.9.0",
              "versionType": "maven"
            },
            {
              "lessThanOrEqual": "3.8.3",
              "status": "affected",
              "version": "3.8.0",
              "versionType": "maven"
            },
            {
              "lessThanOrEqual": "3.7.2",
              "status": "affected",
              "version": "3.6.0",
              "versionType": "maven"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "\u5468\u5409\u5b89(\u5bd2\u6cc9) \u003czhoujian.zja@alibaba-inc.com\u003e"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Information disclosure in persistent watchers handling in Apache ZooKeeper due to missing ACL check. It allows an attacker to monitor child znodes by attaching a persistent watcher (addWatch command) to a parent which the attacker has already access to. ZooKeeper server doesn\u0027t do ACL check when the persistent watcher is triggered and as a consequence, the full path of znodes that a watch event gets triggered upon is exposed to the owner of the watcher. It\u0027s important to note that only the path is exposed by this vulnerability, not the data of znode, but since znode path can contain sensitive information like user name or login ID, this issue is potentially critical.\u003cbr\u003e\u003cbr\u003eUsers are recommended to upgrade to version 3.9.2, 3.8.4 which fixes the issue.\u003cbr\u003e"
            }
          ],
          "value": "Information disclosure in persistent watchers handling in Apache ZooKeeper due to missing ACL check. It allows an attacker to monitor child znodes by attaching a persistent watcher (addWatch command) to a parent which the attacker has already access to. ZooKeeper server doesn\u0027t do ACL check when the persistent watcher is triggered and as a consequence, the full path of znodes that a watch event gets triggered upon is exposed to the owner of the watcher. It\u0027s important to note that only the path is exposed by this vulnerability, not the data of znode, but since znode path can contain sensitive information like user name or login ID, this issue is potentially critical.\n\nUsers are recommended to upgrade to version 3.9.2, 3.8.4 which fixes the issue."
        }
      ],
      "metrics": [
        {
          "other": {
            "content": {
              "text": "critical"
            },
            "type": "Textual description of severity"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-862",
              "description": "CWE-862 Missing Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-03T14:52:57.231Z",
        "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
        "shortName": "apache"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.apache.org/thread/96s5nqssj03rznz9hv58txdb2k1lr79k"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Apache ZooKeeper: Information disclosure in persistent watcher handling",
      "x_generator": {
        "engine": "Vulnogram 0.1.0-dev"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
    "assignerShortName": "apache",
    "cveId": "CVE-2024-23944",
    "datePublished": "2024-03-15T10:26:12.848Z",
    "dateReserved": "2024-01-24T10:28:30.728Z",
    "dateUpdated": "2025-07-03T14:52:57.231Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-23944",
      "date": "2026-06-14",
      "epss": "0.00019",
      "percentile": "0.05347"
    },
    "fkie_nvd": {
      "descriptions": "[{\"lang\": \"en\", \"value\": \"Information disclosure in persistent watchers handling in Apache ZooKeeper due to missing ACL check. It allows an attacker to monitor child znodes by attaching a persistent watcher (addWatch command) to a parent which the attacker has already access to. ZooKeeper server doesn\u0027t do ACL check when the persistent watcher is triggered and as a consequence, the full path of znodes that a watch event gets triggered upon is exposed to the owner of the watcher. It\u0027s important to note that only the path is exposed by this vulnerability, not the data of znode, but since znode path can contain sensitive information like user name or login ID, this issue is potentially critical.\\n\\nUsers are recommended to upgrade to version 3.9.2, 3.8.4 which fixes the issue.\\n\"}, {\"lang\": \"es\", \"value\": \"Divulgaci\\u00f3n de informaci\\u00f3n en el manejo de observadores persistentes en Apache ZooKeeper debido a la falta de verificaci\\u00f3n de ACL. Permite a un atacante monitorear znodes secundarios adjuntando un observador persistente (comando addWatch) a un padre al que el atacante ya tiene acceso. El servidor ZooKeeper no realiza una verificaci\\u00f3n de ACL cuando se activa el observador persistente y, como consecuencia, la ruta completa de los znodes sobre los que se activa un evento de vigilancia queda expuesta al propietario del observador. Es importante tener en cuenta que esta vulnerabilidad solo expone la ruta, no los datos de znode, pero dado que la ruta de znode puede contener informaci\\u00f3n confidencial como el nombre de usuario o el ID de inicio de sesi\\u00f3n, este problema es potencialmente cr\\u00edtico. Se recomienda a los usuarios actualizar a la versi\\u00f3n 3.9.2, 3.8.4, que soluciona el problema.\"}]",
      "id": "CVE-2024-23944",
      "lastModified": "2024-11-21T08:58:44.067",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L\", \"baseScore\": 5.3, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"LOW\", \"integrityImpact\": \"LOW\", \"availabilityImpact\": \"LOW\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 3.4}]}",
      "published": "2024-03-15T11:15:08.927",
      "references": "[{\"url\": \"http://www.openwall.com/lists/oss-security/2024/03/14/2\", \"source\": \"security@apache.org\"}, {\"url\": \"https://lists.apache.org/thread/96s5nqssj03rznz9hv58txdb2k1lr79k\", \"source\": \"security@apache.org\"}, {\"url\": \"http://www.openwall.com/lists/oss-security/2024/03/14/2\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.apache.org/thread/96s5nqssj03rznz9hv58txdb2k1lr79k\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}]",
      "sourceIdentifier": "security@apache.org",
      "vulnStatus": "Awaiting Analysis",
      "weaknesses": "[{\"source\": \"security@apache.org\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-200\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-23944\",\"sourceIdentifier\":\"security@apache.org\",\"published\":\"2024-03-15T11:15:08.927\",\"lastModified\":\"2025-07-03T15:15:22.713\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Information disclosure in persistent watchers handling in Apache ZooKeeper due to missing ACL check. It allows an attacker to monitor child znodes by attaching a persistent watcher (addWatch command) to a parent which the attacker has already access to. ZooKeeper server doesn\u0027t do ACL check when the persistent watcher is triggered and as a consequence, the full path of znodes that a watch event gets triggered upon is exposed to the owner of the watcher. It\u0027s important to note that only the path is exposed by this vulnerability, not the data of znode, but since znode path can contain sensitive information like user name or login ID, this issue is potentially critical.\\n\\nUsers are recommended to upgrade to version 3.9.2, 3.8.4 which fixes the issue.\"},{\"lang\":\"es\",\"value\":\"Divulgaci\u00f3n de informaci\u00f3n en el manejo de observadores persistentes en Apache ZooKeeper debido a la falta de verificaci\u00f3n de ACL. Permite a un atacante monitorear znodes secundarios adjuntando un observador persistente (comando addWatch) a un padre al que el atacante ya tiene acceso. El servidor ZooKeeper no realiza una verificaci\u00f3n de ACL cuando se activa el observador persistente y, como consecuencia, la ruta completa de los znodes sobre los que se activa un evento de vigilancia queda expuesta al propietario del observador. Es importante tener en cuenta que esta vulnerabilidad solo expone la ruta, no los datos de znode, pero dado que la ruta de znode puede contener informaci\u00f3n confidencial como el nombre de usuario o el ID de inicio de sesi\u00f3n, este problema es potencialmente cr\u00edtico. Se recomienda a los usuarios actualizar a la versi\u00f3n 3.9.2, 3.8.4, que soluciona el problema.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":1.8,\"impactScore\":3.4}]},\"weaknesses\":[{\"source\":\"security@apache.org\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-862\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-862\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apache:zookeeper:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.6.0\",\"versionEndIncluding\":\"3.7.2\",\"matchCriteriaId\":\"8C9296E5-2E56-4FC3-9E6B-0A10250B4968\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apache:zookeeper:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.8.0\",\"versionEndExcluding\":\"3.8.4\",\"matchCriteriaId\":\"67E0AF01-D875-4EF5-A015-66E3AA933CE7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apache:zookeeper:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.9.0\",\"versionEndExcluding\":\"3.9.2\",\"matchCriteriaId\":\"501AC2EB-2C3E-4388-B8AA-403535133FAC\"}]}]}],\"references\":[{\"url\":\"https://lists.apache.org/thread/96s5nqssj03rznz9hv58txdb2k1lr79k\",\"source\":\"security@apache.org\",\"tags\":[\"Mailing List\",\"Vendor Advisory\"]},{\"url\":\"http://www.openwall.com/lists/oss-security/2024/03/14/2\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\"]},{\"url\":\"https://lists.apache.org/thread/96s5nqssj03rznz9hv58txdb2k1lr79k\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Vendor Advisory\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://lists.apache.org/thread/96s5nqssj03rznz9hv58txdb2k1lr79k\", \"tags\": [\"vendor-advisory\", \"x_transferred\"]}, {\"url\": \"http://www.openwall.com/lists/oss-security/2024/03/14/2\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-01T23:13:08.588Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.3, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"LOW\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"LOW\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-23944\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-03-19T15:31:26.291137Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-05-23T19:01:18.785Z\"}}], \"cna\": {\"title\": \"Apache ZooKeeper: Information disclosure in persistent watcher handling\", \"source\": {\"discovery\": \"EXTERNAL\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"reporter\", \"value\": \"\\u5468\\u5409\\u5b89(\\u5bd2\\u6cc9) \u003czhoujian.zja@alibaba-inc.com\u003e\"}], \"metrics\": [{\"other\": {\"type\": \"Textual description of severity\", \"content\": {\"text\": \"critical\"}}}], \"affected\": [{\"vendor\": \"Apache Software Foundation\", \"product\": \"Apache ZooKeeper\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.9.0\", \"versionType\": \"maven\", \"lessThanOrEqual\": \"3.9.1\"}, {\"status\": \"affected\", \"version\": \"3.8.0\", \"versionType\": \"maven\", \"lessThanOrEqual\": \"3.8.3\"}, {\"status\": \"affected\", \"version\": \"3.6.0\", \"versionType\": \"maven\", \"lessThanOrEqual\": \"3.7.2\"}], \"packageName\": \"org.apache.zookeeper:zookeeper\", \"collectionURL\": \"https://repo.maven.apache.org/maven2\", \"defaultStatus\": \"unaffected\"}], \"references\": [{\"url\": \"https://lists.apache.org/thread/96s5nqssj03rznz9hv58txdb2k1lr79k\", \"tags\": [\"vendor-advisory\"]}], \"x_generator\": {\"engine\": \"Vulnogram 0.1.0-dev\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"Information disclosure in persistent watchers handling in Apache ZooKeeper due to missing ACL check. It allows an attacker to monitor child znodes by attaching a persistent watcher (addWatch command) to a parent which the attacker has already access to. ZooKeeper server doesn\u0027t do ACL check when the persistent watcher is triggered and as a consequence, the full path of znodes that a watch event gets triggered upon is exposed to the owner of the watcher. It\u0027s important to note that only the path is exposed by this vulnerability, not the data of znode, but since znode path can contain sensitive information like user name or login ID, this issue is potentially critical.\\n\\nUsers are recommended to upgrade to version 3.9.2, 3.8.4 which fixes the issue.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"Information disclosure in persistent watchers handling in Apache ZooKeeper due to missing ACL check. It allows an attacker to monitor child znodes by attaching a persistent watcher (addWatch command) to a parent which the attacker has already access to. ZooKeeper server doesn\u0027t do ACL check when the persistent watcher is triggered and as a consequence, the full path of znodes that a watch event gets triggered upon is exposed to the owner of the watcher. It\u0027s important to note that only the path is exposed by this vulnerability, not the data of znode, but since znode path can contain sensitive information like user name or login ID, this issue is potentially critical.\u003cbr\u003e\u003cbr\u003eUsers are recommended to upgrade to version 3.9.2, 3.8.4 which fixes the issue.\u003cbr\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-862\", \"description\": \"CWE-862 Missing Authorization\"}]}], \"providerMetadata\": {\"orgId\": \"f0158376-9dc2-43b6-827c-5f631a4d8d09\", \"shortName\": \"apache\", \"dateUpdated\": \"2025-07-03T14:52:57.231Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-23944\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-07-03T14:52:57.231Z\", \"dateReserved\": \"2024-01-24T10:28:30.728Z\", \"assignerOrgId\": \"f0158376-9dc2-43b6-827c-5f631a4d8d09\", \"datePublished\": \"2024-03-15T10:26:12.848Z\", \"assignerShortName\": \"apache\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.