FKIE_CVE-2023-38283

Vulnerability from fkie_nvd - Published: 2023-08-29 16:15 - Updated: 2026-06-17 06:09
Severity
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Summary
In OpenBGPD before 8.1, incorrect handling of BGP update data (length of path attributes) set by a potentially distant remote actor may cause the system to incorrectly reset a session. This is fixed in OpenBSD 7.3 errata 006.
References
cve@mitre.orghttps://blog.benjojo.co.uk/post/bgp-path-attributes-grave-error-handlingExploit, Third Party Advisory
cve@mitre.orghttps://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/006_bgpd.patch.sigPatch
cve@mitre.orghttps://github.com/openbgpd-portable/openbgpd-portable/releases/tag/8.1Release Notes
cve@mitre.orghttps://news.ycombinator.com/item?id=37305800Mailing List
cve@mitre.orghttps://www.openbsd.org/errata73.htmlRelease Notes
af854a3a-2127-422b-91ae-364da2661108https://blog.benjojo.co.uk/post/bgp-path-attributes-grave-error-handlingExploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/006_bgpd.patch.sigPatch
af854a3a-2127-422b-91ae-364da2661108https://github.com/openbgpd-portable/openbgpd-portable/releases/tag/8.1Release Notes
af854a3a-2127-422b-91ae-364da2661108https://news.ycombinator.com/item?id=37305800Mailing List
af854a3a-2127-422b-91ae-364da2661108https://www.openbsd.org/errata73.htmlRelease Notes
Impacted products
Vendor Product Version
openbgpd openbgpd *
openbsd openbsd *
openbsd openbsd 7.3
openbsd openbsd 7.3
openbsd openbsd 7.3
openbsd openbsd 7.3
openbsd openbsd 7.3
openbsd openbsd 7.3
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{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    },
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:bgp:openbgpd:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unknown",
          "product": "openbgpd",
          "vendor": "bgp",
          "versions": [
            {
              "lessThan": "8.1",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "configurations": [
    {
      "nodes": [
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              "versionEndExcluding": "8.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "131B4208-6843-40D3-8818-159D1204BD0E",
              "versionEndExcluding": "7.3",
              "vulnerable": false
            },
            {
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              "matchCriteriaId": "7BAA0C9B-7CEA-4647-809F-027EB34C142E",
              "vulnerable": false
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              "matchCriteriaId": "B3CC37B8-46C0-407B-8DE4-2B5BC36BA969",
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              "matchCriteriaId": "D53FE3CA-1A90-4783-8AC2-C0B4CF6F052D",
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              "matchCriteriaId": "DCAE527B-1176-4759-B903-59A72245517B",
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          ],
          "negate": false,
          "operator": "OR"
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      ],
      "operator": "AND"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In OpenBGPD before 8.1, incorrect handling of BGP update data (length of path attributes) set by a potentially distant remote actor may cause the system to incorrectly reset a session. This is fixed in OpenBSD 7.3 errata 006."
    }
  ],
  "id": "CVE-2023-38283",
  "lastModified": "2026-06-17T06:09:48.847",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-38283",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
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          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-10-02T14:52:46.910912Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2023-08-29T16:15:08.960",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://blog.benjojo.co.uk/post/bgp-path-attributes-grave-error-handling"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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      "url": "https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/006_bgpd.patch.sig"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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      "url": "https://github.com/openbgpd-portable/openbgpd-portable/releases/tag/8.1"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Mailing List"
      ],
      "url": "https://news.ycombinator.com/item?id=37305800"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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      "url": "https://www.openbsd.org/errata73.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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        "Third Party Advisory"
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      "url": "https://blog.benjojo.co.uk/post/bgp-path-attributes-grave-error-handling"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/006_bgpd.patch.sig"
    },
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    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-754"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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