github - ghsa-x6fh-7qmf-69xh

ghsa-x6fh-7qmf-69xh

Vulnerability from github

Published

2025-10-23 06:31

Modified

2025-10-23 16:49

Severity ?

4.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L

Summary

Slack Nebula may accept arbitrary source IP addresses

Details

Slack Nebula before 1.9.7 mishandles CIDR in some configurations and thus accepts arbitrary source IP addresses within the Nebula network.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/slackhq/nebula"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.9.4"
            },
            {
              "fixed": "1.9.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-62820"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-420"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-10-23T16:49:07Z",
    "nvd_published_at": "2025-10-23T04:18:57Z",
    "severity": "MODERATE"
  },
  "details": "Slack Nebula before 1.9.7 mishandles CIDR in some configurations and thus accepts arbitrary source IP addresses within the Nebula network.",
  "id": "GHSA-x6fh-7qmf-69xh",
  "modified": "2025-10-23T16:49:07Z",
  "published": "2025-10-23T06:31:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-62820"
    },
    {
      "type": "WEB",
      "url": "https://github.com/slackhq/nebula/pull/1493"
    },
    {
      "type": "WEB",
      "url": "https://github.com/slackhq/nebula/pull/1494"
    },
    {
      "type": "WEB",
      "url": "https://github.com/slackhq/nebula/commit/e264a0ff888c7bf0568579306755a60fc42f6ecc"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/slackhq/nebula"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Slack Nebula may accept arbitrary source IP addresses "
}

CVE-2025-62820 (GCVE-0-2025-62820)

Vulnerability from cvelistv5

Published

2025-10-23 00:00

Modified

2025-10-23 14:35

Severity ?

4.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L

CWE

CWE-420 - Unprotected Alternate Channel

Summary

Slack Nebula before 1.9.7 mishandles CIDR in some configurations and thus accepts arbitrary source IP addresses within the Nebula network.

References

URL

Tags

	https://github.com/slackhq/nebula/pull/1493
	https://github.com/slackhq/nebula/pull/1494

Impacted products

	Vendor	Product	Version
	Slack	Nebula	Version: 0 ≤

Show details on NVD website

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-62820",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-23T13:22:11.383709Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-23T14:35:19.815Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Nebula",
          "vendor": "Slack",
          "versions": [
            {
              "lessThan": "1.9.7",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:slack:nebula:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "1.9.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Slack Nebula before 1.9.7 mishandles CIDR in some configurations and thus accepts arbitrary source IP addresses within the Nebula network."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 4.9,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-420",
              "description": "CWE-420 Unprotected Alternate Channel",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-23T03:57:04.063Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://github.com/slackhq/nebula/pull/1493"
        },
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          "url": "https://github.com/slackhq/nebula/pull/1494"
        }
      ],
      "x_generator": {
        "engine": "enrichogram 0.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2025-62820",
    "datePublished": "2025-10-23T00:00:00.000Z",
    "dateReserved": "2025-10-23T00:00:00.000Z",
    "dateUpdated": "2025-10-23T14:35:19.815Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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