CVE-2024-23672: Apache Tomcat Denial of Service Vulnerability

MODERATE
Advisory Identifier: GHSA-v682-8vv8-vpwr
Share
CVSS 6.3
CWE-459
Published
Advisory Summary

CVE-2024-23672 is a MODERATE (CVSS 6.3) denial of service vulnerability (CWE-459: Incomplete Cleanup) affecting Apache Tomcat libraries in the Maven ecosystem. The issue involves denial of service via incomplete cleanup vulnerability in apache tomcat. Remediation is available by upgrading affected packages to version 11.0.0-M17, 10.1.19, 9.0.86, 8.5.99.

CVE-2024-23672 at a Glance

CVE Identifier CVE-2024-23672
GHSA Identifier GHSA-v682-8vv8-vpwr
Severity MODERATE
CVSS v3.1 Base Score 6.3
CWE Classification CWE-459: Incomplete Cleanup
Affected Product Apache Tomcat
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 6.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability Low (A:L)

How to Fix CVE-2024-23672

To remediate this vulnerability, upgrade all affected Apache Tomcat dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.apache.tomcat:tomcat-websocket fixed: 11.0.0-M17 
<dependency>
    <groupId>org.apache.tomcat</groupId>
    <artifactId>tomcat-websocket</artifactId>
    <version>11.0.0-M17</version>
</dependency>
org.apache.tomcat:tomcat-websocket fixed: 10.1.19 
<dependency>
    <groupId>org.apache.tomcat</groupId>
    <artifactId>tomcat-websocket</artifactId>
    <version>10.1.19</version>
</dependency>
org.apache.tomcat:tomcat-websocket fixed: 9.0.86 
<dependency>
    <groupId>org.apache.tomcat</groupId>
    <artifactId>tomcat-websocket</artifactId>
    <version>9.0.86</version>
</dependency>
org.apache.tomcat:tomcat-websocket fixed: 8.5.99 
<dependency>
    <groupId>org.apache.tomcat</groupId>
    <artifactId>tomcat-websocket</artifactId>
    <version>8.5.99</version>
</dependency>
org.apache.tomcat.embed:tomcat-embed-websocket fixed: 11.0.0-M17 
<dependency>
    <groupId>org.apache.tomcat.embed</groupId>
    <artifactId>tomcat-embed-websocket</artifactId>
    <version>11.0.0-M17</version>
</dependency>
org.apache.tomcat.embed:tomcat-embed-websocket fixed: 10.1.19 
<dependency>
    <groupId>org.apache.tomcat.embed</groupId>
    <artifactId>tomcat-embed-websocket</artifactId>
    <version>10.1.19</version>
</dependency>
org.apache.tomcat.embed:tomcat-embed-websocket fixed: 9.0.86 
<dependency>
    <groupId>org.apache.tomcat.embed</groupId>
    <artifactId>tomcat-embed-websocket</artifactId>
    <version>9.0.86</version>
</dependency>
org.apache.tomcat.embed:tomcat-embed-websocket fixed: 8.5.99 
<dependency>
    <groupId>org.apache.tomcat.embed</groupId>
    <artifactId>tomcat-embed-websocket</artifactId>
    <version>8.5.99</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=org.apache.tomcat

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2024-23672, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.apache.tomcat

Analyze the terminal output to locate any version of Apache Tomcat in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 11.0.0-M17), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.apache.tomcat command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-459: Incomplete Cleanup, where the product does not properly "clean up" and remove temporary or supporting resources after they have been used. In Apache Tomcat, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Denial of Service via incomplete cleanup vulnerability in Apache Tomcat. It was possible for WebSocket clients to keep WebSocket connections open leading to increased resource consumption.This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.0-M16, from 10.1.0-M1 through 10.1.18, from 9.0.0-M1 through 9.0.85, from 8.5.0 through 8.5.98. Older, EOL versions may also be affected. Users are recommended to upgrade to version 11.0.0-M17, 10.1.19, 9.0.86 or 8.5.99 which fix the issue.

CVE-2024-23672 Affected Apache Tomcat Versions

8 component(s)
Fixed Versions:
11.0.0-M1710.1.199.0.868.5.99
Product / Package Ecosystem Affected Versions Fixed Version
org.apache.tomcat:tomcat-websocket
maven/org.apache.tomcat/tomcat-websocket
Maven
≥ 11.0.0-M1
< 11.0.0-M17
11.0.0-M17
org.apache.tomcat:tomcat-websocket
maven/org.apache.tomcat/tomcat-websocket
Maven
≥ 10.1.0-M1
< 10.1.19
10.1.19
org.apache.tomcat:tomcat-websocket
maven/org.apache.tomcat/tomcat-websocket
Maven
≥ 9.0.0-M1
< 9.0.86
9.0.86
org.apache.tomcat:tomcat-websocket
maven/org.apache.tomcat/tomcat-websocket
Maven
≥ 8.5.0
< 8.5.99
8.5.99
org.apache.tomcat.embed:tomcat-embed-websocket
maven/org.apache.tomcat.embed/tomcat-embed-websocket
Maven
≥ 11.0.0-M1
< 11.0.0-M17
11.0.0-M17
org.apache.tomcat.embed:tomcat-embed-websocket
maven/org.apache.tomcat.embed/tomcat-embed-websocket
Maven
≥ 10.1.0-M1
< 10.1.19
10.1.19
org.apache.tomcat.embed:tomcat-embed-websocket
maven/org.apache.tomcat.embed/tomcat-embed-websocket
Maven
≥ 9.0.0-M1
< 9.0.86
9.0.86
org.apache.tomcat.embed:tomcat-embed-websocket
maven/org.apache.tomcat.embed/tomcat-embed-websocket
Maven
≥ 8.5.0
< 8.5.99
8.5.99

References

NVD — CVE-2024-23672 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-23672
Security Fix Commit FIX COMMIT
https://github.com/apache/tomcat/commit/0052b374684b613b0c849899b325ebe334ac6501
Security Fix Commit FIX COMMIT
https://github.com/apache/tomcat/commit/3631adb1342d8bbd8598802a12b63ad02c37d591
Security Fix Commit FIX COMMIT
https://github.com/apache/tomcat/commit/52d6650e062d880704898d7d8c1b2b7a3efe8068
Security Fix Commit FIX COMMIT
https://github.com/apache/tomcat/commit/b0e3b1bd78de270d53e319d7cb79eb282aa53cb9
Apache Tomcat Source Repository REPOSITORY
https://github.com/apache/tomcat
lists.apache.org/thread/cmpswfx6tj4s... WEB
https://lists.apache.org/thread/cmpswfx6tj4s7x0nxxosvfqs11lvdx2f
lists.debian.org/debian-lts-announce... WEB
https://lists.debian.org/debian-lts-announce/2024/04/msg00001.html
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3UWIS5MMGYDZBLJYT674ZI5AWFHDZ46B
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/736G4GPZWS2DSQO5WKXO3G6OMZKFEK55
Apache Tomcat Security Information SECURITY
https://security.netapp.com/advisory/ntap-20240402-0002
Apache Tomcat Security Information SECURITY
http://www.openwall.com/lists/oss-security/2024/03/13/4

Frequently Asked Questions

What is CVE-2024-23672?
CVE-2024-23672 is a security vulnerability in Apache Tomcat involving Denial of Service via incomplete cleanup vulnerability in Apache Tomcat under CWE-459: Incomplete Cleanup.
Which Apache Tomcat versions are affected?
Affected versions include releases prior to 11.0.0-M17, 10.1.19, 9.0.86, 8.5.99 across affected packages: org.apache.tomcat:tomcat-websocket, org.apache.tomcat.embed:tomcat-embed-websocket.
What version fixes CVE-2024-23672?
Upgrading to 11.0.0-M17, 10.1.19, 9.0.86, 8.5.99 (or the latest patched release for your respective branch) resolves the vulnerability.
Is tomcat-websocket affected?
Yes, org.apache.tomcat:tomcat-websocket is affected in releases prior to 11.0.0-M17, 10.1.19, 9.0.86, 8.5.99. Upgrade your dependency to 11.0.0-M17, 10.1.19, 9.0.86, 8.5.99 or later.
Is tomcat-embed-websocket affected?
Yes, org.apache.tomcat.embed:tomcat-embed-websocket is affected in releases prior to 11.0.0-M17, 10.1.19, 9.0.86, 8.5.99. Upgrade your dependency to 11.0.0-M17, 10.1.19, 9.0.86, 8.5.99 or later.
What is the CVSS score of CVE-2024-23672?
CVE-2024-23672 has a CVSS v3.1 base score of 6.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
What CWE is associated with CVE-2024-23672?
CVE-2024-23672 is classified under CWE-459: Incomplete Cleanup (The product does not properly "clean up" and remove temporary or supporting resources after they have been used.).
How can I check Maven dependencies for CVE-2024-23672?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.apache.tomcat'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-v682-8vv8-vpwr",
  "modified" : "2025-08-08T18:33:22Z",
  "published" : "2024-03-13T18:31:34Z",
  "aliases" : [ "CVE-2024-23672" ],
  "summary" : "Denial of Service via incomplete cleanup vulnerability in Apache Tomcat",
  "details" : "Denial of Service via incomplete cleanup vulnerability in Apache Tomcat. It was possible for WebSocket clients to keep WebSocket connections open leading to increased resource consumption.This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.0-M16, from 10.1.0-M1 through 10.1.18, from 9.0.0-M1 through 9.0.85, from 8.5.0 through 8.5.98. Older, EOL versions may also be affected.\n\nUsers are recommended to upgrade to version 11.0.0-M17, 10.1.19, 9.0.86 or 8.5.99 which fix the issue.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.tomcat:tomcat-websocket"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "11.0.0-M1"
      }, {
        "fixed" : "11.0.0-M17"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 11.0.0-M16"
    }
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.tomcat:tomcat-websocket"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "10.1.0-M1"
      }, {
        "fixed" : "10.1.19"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 10.1.18"
    }
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.tomcat:tomcat-websocket"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "9.0.0-M1"
      }, {
        "fixed" : "9.0.86"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 9.0.85"
    }
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.tomcat:tomcat-websocket"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "8.5.0"
      }, {
        "fixed" : "8.5.99"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 8.5.98"
    }
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.tomcat.embed:tomcat-embed-websocket"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "11.0.0-M1"
      }, {
        "fixed" : "11.0.0-M17"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 11.0.0-M16"
    }
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.tomcat.embed:tomcat-embed-websocket"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "10.1.0-M1"
      }, {
        "fixed" : "10.1.19"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 10.1.18"
    }
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.tomcat.embed:tomcat-embed-websocket"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "9.0.0-M1"
      }, {
        "fixed" : "9.0.86"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 9.0.85"
    }
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.tomcat.embed:tomcat-embed-websocket"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "8.5.0"
      }, {
        "fixed" : "8.5.99"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 8.5.98"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-23672"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/tomcat/commit/0052b374684b613b0c849899b325ebe334ac6501"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/tomcat/commit/3631adb1342d8bbd8598802a12b63ad02c37d591"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/tomcat/commit/52d6650e062d880704898d7d8c1b2b7a3efe8068"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/tomcat/commit/b0e3b1bd78de270d53e319d7cb79eb282aa53cb9"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/apache/tomcat"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread/cmpswfx6tj4s7x0nxxosvfqs11lvdx2f"
  }, {
    "type" : "WEB",
    "url" : "https://lists.debian.org/debian-lts-announce/2024/04/msg00001.html"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3UWIS5MMGYDZBLJYT674ZI5AWFHDZ46B"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/736G4GPZWS2DSQO5WKXO3G6OMZKFEK55"
  }, {
    "type" : "WEB",
    "url" : "https://security.netapp.com/advisory/ntap-20240402-0002"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2024/03/13/4"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-459" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-03-14T14:04:03Z",
    "nvd_published_at" : "2024-03-13T16:15:29Z"
  }
}