CVE-2024-23684: Cbor Denial of Service Vulnerability
HIGHCVE-2024-23684 is a HIGH (CVSS 7.5) denial of service vulnerability (CWE-407: Inefficient Algorithmic Complexity) affecting Cbor libraries in the Maven ecosystem. The issue involves denial of service in cbor library. Remediation is available by upgrading affected packages to version 4.5.1.
CVE-2024-23684 at a Glance
Security Impact
CVSS: 7.5
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
How to Fix CVE-2024-23684
To remediate this vulnerability, upgrade all affected Cbor dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
<dependency>
<groupId>com.upokecenter</groupId>
<artifactId>cbor</artifactId>
<version>4.5.1</version>
</dependency>Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:tree -Dincludes=com.upokecenterHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2024-23684, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:tree -Dincludes=com.upokecenterAnalyze the terminal output to locate any version of Cbor in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.5.1), your application is affected.
Note: The mvn dependency:tree -Dincludes=com.upokecenter 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-407: Inefficient Algorithmic Complexity, where an algorithm in a product has an inefficient worst-case computational complexity that may be detrimental to system performance and can be triggered by an attacker, typically using crafted manipulations that ensure that the worst case is being reached. In Cbor, 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
CVE-2024-23684 Affected Cbor Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
com.upokecenter:cbor
|
Maven |
≥ 4.0.0
< 4.5.1
|
4.5.1
|
References
Frequently Asked Questions
What is CVE-2024-23684?
Which Cbor versions are affected?
What version fixes CVE-2024-23684?
Is cbor affected?
What is the CVSS score of CVE-2024-23684?
What CWE is associated with CVE-2024-23684?
How can I check Maven dependencies for CVE-2024-23684?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-fj2w-wfgv-mwq6",
"modified" : "2026-01-22T20:53:20Z",
"published" : "2022-01-21T23:21:48Z",
"aliases" : [ "CVE-2024-23684" ],
"summary" : "Denial of service in CBOR library",
"details" : "### Impact\nDue to this library's use of an inefficient algorithm, it is vulnerable to a denial of service attack when a maliciously crafted input is passed to `DecodeFromBytes` or other CBOR decoding mechanisms in this library. \n\nAffected versions _include_ versions 4.0.0 through 4.5.0.\n\nThis vulnerability was privately reported to me.\n\n### Patches\nThis issue has been fixed in version 4.5.1. Users should use the latest version of this library. (The latest version is not necessarily 4.5.1. Check the README for [this library's repository](https://github.com/peteroupc/CBOR-Java) to see the latest version's version number.)\n\n### Workarounds\n\nAgain, users should use the latest version of this library.\n\nIn the meantime, note that the inputs affected by this issue are all CBOR maps or contain CBOR maps. An input that decodes to a single CBOR object is not capable of containing a CBOR map if—\n\n- it begins with a byte other than 0x80 through 0xDF, or\n- it does not contain a byte in the range 0xa0 through 0xBF.\n\nSuch an input is not affected by this vulnerability and an application can choose to perform this check before passing it to a CBOR decoding mechanism.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [the CBOR repository](https://github.com/peteroupc/CBOR-Java).",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Maven",
"name" : "com.upokecenter:cbor"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "4.0.0"
}, {
"fixed" : "4.5.1"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/peteroupc/CBOR-Java/security/advisories/GHSA-fj2w-wfgv-mwq6"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-23684"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/peteroupc/CBOR-Java"
}, {
"type" : "WEB",
"url" : "https://vulncheck.com/advisories/vc-advisory-GHSA-fj2w-wfgv-mwq6"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-407" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2022-01-19T16:15:17Z",
"nvd_published_at" : null
}
}