cvelistv5 - cve-2024-6863

CVE-2024-6863 (GCVE-0-2024-6863)

Vulnerability from cvelistv5 – Published: 2025-03-20 10:10 – Updated: 2025-10-15 12:50

Summary

In h2oai/h2o-3 version 3.46.0, an endpoint exposing a custom EncryptionTool allows an attacker to encrypt any files on the target server with a key of their choosing. The chosen key can also be overwritten, resulting in ransomware-like behavior. This vulnerability makes it possible for an attacker to encrypt arbitrary files with keys of their choice, making it exceedingly difficult for the target to recover the keys needed for decryption.

Severity ?

6.5 (Medium)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

CWE

CWE-749 - Exposed Dangerous Method or Function

Assigner

@huntr_ai

References

URL

Tags

https://huntr.com/bounties/10f55937-0cba-4530-897…

Impacted products

	Vendor	Product	Version
	h2oai	h2oai/h2o-3	Affected: unspecified , ≤ latest (custom)

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2024-6863

Vulnerability from fkie_nvd - Published: 2025-03-20 10:15 - Updated: 2025-07-15 15:52

Severity ?

6.5 (Medium) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Summary

References

	URL	Tags
	security@huntr.dev	https://huntr.com/bounties/10f55937-0cba-4530-897f-2abf30ed5270	Exploit, Third Party Advisory

Impacted products

	Vendor	Product	Version
	h2o	h2o	3.46.0

JSON

To clipboard

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:h2o:h2o:3.46.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "23A801BB-59F5-4E6E-9DC6-C9D924DC28D2",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In h2oai/h2o-3 version 3.46.0, an endpoint exposing a custom EncryptionTool allows an attacker to encrypt any files on the target server with a key of their choosing. The chosen key can also be overwritten, resulting in ransomware-like behavior. This vulnerability makes it possible for an attacker to encrypt arbitrary files with keys of their choice, making it exceedingly difficult for the target to recover the keys needed for decryption."
    },
    {
      "lang": "es",
      "value": "En la versi\u00f3n 3.46.0 de h2oai/h2o-3, un endpoint que expone una herramienta de cifrado personalizada permite a un atacante cifrar cualquier archivo en el servidor objetivo con una clave de su elecci\u00f3n. Esta clave tambi\u00e9n puede sobrescribirse, lo que resulta en un comportamiento similar al de un ransomware. Esta vulnerabilidad permite a un atacante cifrar archivos arbitrarios con claves de su elecci\u00f3n, lo que dificulta enormemente que el objetivo recupere las claves necesarias para el descifrado."
    }
  ],
  "id": "CVE-2024-6863",
  "lastModified": "2025-07-15T15:52:34.060",
  "metrics": {
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
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          "baseScore": 6.5,
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          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
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GHSA-M37H-8R48-2CXJ

Vulnerability from github – Published: 2025-03-20 12:32 – Updated: 2025-03-20 19:46

Summary

H2O Vulnerable to Execution of Arbitrary Files

Details

Severity ?

6.5 (Medium)


                  
                    CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "h2o"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.32.1.2"
            },
            {
              "last_affected": "3.46.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "ai.h2o:h2o-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.32.1.2"
            },
            {
              "last_affected": "3.46.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-6863"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-749"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-03-20T19:46:49Z",
    "nvd_published_at": "2025-03-20T10:15:34Z",
    "severity": "MODERATE"
  },
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  "id": "GHSA-m37h-8r48-2cxj",
  "modified": "2025-03-20T19:46:49Z",
  "published": "2025-03-20T12:32:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-6863"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/h2oai/h2o-3"
    },
    {
      "type": "WEB",
      "url": "https://github.com/h2oai/h2o-3/blob/a20b5b19b769866ee24b217ee78b820e64c1cd6a/h2o-core/src/main/java/water/tools/EncryptionTool.java#L49"
    },
    {
      "type": "WEB",
      "url": "https://huntr.com/bounties/10f55937-0cba-4530-897f-2abf30ed5270"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "H2O Vulnerable to Execution of Arbitrary Files"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

CVE-2024-6863 (GCVE-0-2024-6863)

FKIE_CVE-2024-6863

GHSA-M37H-8R48-2CXJ

Tags

Sightings

Nomenclature