Vulnerability-Lookup

ubuntu-cve-2025-30204

Vulnerability from osv_ubuntu

Published

2025-03-21 22:15

Modified

2025-09-08 17:08

Summary

Details

golang-jwt is a Go implementation of JSON Web Tokens. Starting in version 3.2.0 and prior to versions 5.2.2 and 4.5.2, the function parse.ParseUnverified splits (via a call to strings.Split) its argument (which is untrusted data) on periods. As a result, in the face of a malicious request whose Authorization header consists of Bearer followed by many period characters, a call to that function incurs allocations to the tune of O(n) bytes (where n stands for the length of the function's argument), with a constant factor of about 16. This issue is fixed in 5.2.2 and 4.5.2.

Severity

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2025-30204	REPORT
	https://www.cve.org/CVERecord?id=CVE-2025-30204	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "golang-github-golang-jwt-jwt-dev",
            "binary_version": "4.2.0-1ubuntu0.1"
          },
          {
            "binary_name": "jwt",
            "binary_version": "4.2.0-1ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "golang-github-golang-jwt-jwt",
        "purl": "pkg:deb/ubuntu/golang-github-golang-jwt-jwt@4.2.0-1ubuntu0.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.1.0-1",
        "4.1.0-2",
        "4.2.0-1",
        "4.2.0-1ubuntu0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "golang-github-golang-jwt-jwt-dev",
            "binary_version": "5.0.0+really4.5.0-1"
          },
          {
            "binary_name": "jwt",
            "binary_version": "5.0.0+really4.5.0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "golang-github-golang-jwt-jwt",
        "purl": "pkg:deb/ubuntu/golang-github-golang-jwt-jwt@5.0.0+really4.5.0-1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.4.3-1build1",
        "5.0.0+really4.5.0-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "golang-github-golang-jwt-jwt-v5-dev",
            "binary_version": "5.2.0-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "golang-github-golang-jwt-jwt-v5",
        "purl": "pkg:deb/ubuntu/golang-github-golang-jwt-jwt-v5@5.2.0-2?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.2.0-2"
      ]
    }
  ],
  "aliases": [],
  "details": "golang-jwt is a Go implementation of JSON Web Tokens. Starting in version 3.2.0 and prior to versions 5.2.2 and 4.5.2, the function parse.ParseUnverified splits (via a call to strings.Split) its argument (which is untrusted data) on periods. As a result, in the face of a malicious request whose Authorization header consists of Bearer  followed by many period characters, a call to that function incurs allocations to the tune of O(n) bytes (where n stands for the length of the function\u0027s argument), with a constant factor of about 16. This issue is fixed in 5.2.2 and 4.5.2.",
  "id": "UBUNTU-CVE-2025-30204",
  "modified": "2025-09-08T17:08:13Z",
  "published": "2025-03-21T22:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-30204"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-30204"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2025-30204"
  ]
}

CVE-2025-30204 (GCVE-0-2025-30204)

Vulnerability from cvelistv5 – Published: 2025-03-21 21:42 – Updated: 2025-04-10 13:03

Title

jwt-go allows excessive memory allocation during header parsing

Summary

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-03-24 14:10 UTC

CWE

CWE-405 - Asymmetric Resource Consumption (Amplification)

Assigner

GitHub_M mitre root

References

4 references

URL	Tags
https://github.com/golang-jwt/jwt/security/adviso…	x_refsource_CONFIRM
https://github.com/golang-jwt/jwt/commit/0951d184…	x_refsource_MISC
https://github.com/golang-jwt/jwt/commit/bf316c48…	x_refsource_MISC
https://security.netapp.com/advisory/ntap-2025040…

Impacted products

1 product

Vendor	Product	Version
golang-jwt	jwt	Affected: >= 3.2.0, < 4.5.2 Affected: >= 5.0.0-rc.1, < 5.2.2

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-30204",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-03-24T14:10:18.281694Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-03-24T14:10:35.776Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-04-04T23:03:13.309Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://security.netapp.com/advisory/ntap-20250404-0002/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "jwt",
          "vendor": "golang-jwt",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 3.2.0, \u003c 4.5.2"
            },
            {
              "status": "affected",
              "version": "\u003e= 5.0.0-rc.1, \u003c 5.2.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "golang-jwt is a Go implementation of JSON Web Tokens. Starting in version 3.2.0 and prior to versions 5.2.2 and 4.5.2, the function parse.ParseUnverified splits (via a call to strings.Split) its argument (which is untrusted data) on periods. As a result, in the face of a malicious request whose Authorization header consists of Bearer  followed by many period characters, a call to that function incurs allocations to the tune of O(n) bytes (where n stands for the length of the function\u0027s argument), with a constant factor of about 16. This issue is fixed in 5.2.2 and 4.5.2."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-405",
              "description": "CWE-405: Asymmetric Resource Consumption (Amplification)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-04-10T13:03:19.897Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/golang-jwt/jwt/security/advisories/GHSA-mh63-6h87-95cp",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/golang-jwt/jwt/security/advisories/GHSA-mh63-6h87-95cp"
        },
        {
          "name": "https://github.com/golang-jwt/jwt/commit/0951d184286dece21f73c85673fd308786ffe9c3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/golang-jwt/jwt/commit/0951d184286dece21f73c85673fd308786ffe9c3"
        },
        {
          "name": "https://github.com/golang-jwt/jwt/commit/bf316c48137a1212f8d0af9288cc9ce8e59f1afb",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/golang-jwt/jwt/commit/bf316c48137a1212f8d0af9288cc9ce8e59f1afb"
        }
      ],
      "source": {
        "advisory": "GHSA-mh63-6h87-95cp",
        "discovery": "UNKNOWN"
      },
      "title": "jwt-go allows excessive memory allocation during header parsing"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-30204",
    "datePublished": "2025-03-21T21:42:01.382Z",
    "dateReserved": "2025-03-18T18:15:13.849Z",
    "dateUpdated": "2025-04-10T13:03:19.897Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.