FKIE_CVE-2024-28820

Vulnerability from fkie_nvd - Published: 2024-06-27 16:15 - Updated: 2026-06-17 07:21
Severity
6.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Summary
Buffer overflow in the extract_openvpn_cr function in openvpn-cr.c in openvpn-auth-ldap (aka the Three Rings Auth-LDAP plugin for OpenVPN) 2.0.4 allows attackers with a valid LDAP username and who can control the challenge/response password field to pass a string with more than 14 colons into this field and cause a buffer overflow.
References
cve@mitre.orghttps://github.com/threerings/openvpn-auth-ldap/pull/92
cve@mitre.orghttps://github.com/threerings/openvpn-auth-ldap/tags
af854a3a-2127-422b-91ae-364da2661108https://github.com/threerings/openvpn-auth-ldap/pull/92
af854a3a-2127-422b-91ae-364da2661108https://github.com/threerings/openvpn-auth-ldap/tags
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    },
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:threerings:openvpn-auth-ldap:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unknown",
          "product": "openvpn-auth-ldap",
          "vendor": "threerings",
          "versions": [
            {
              "status": "affected",
              "version": "2.04"
            }
          ]
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Buffer overflow in the extract_openvpn_cr function in openvpn-cr.c in openvpn-auth-ldap (aka the Three Rings Auth-LDAP plugin for OpenVPN) 2.0.4 allows attackers with a valid LDAP username and who can control the challenge/response password field to pass a string with more than 14 colons into this field and cause a buffer overflow."
    },
    {
      "lang": "es",
      "value": "Desbordamiento de b\u00fafer en la funci\u00f3n extract_openvpn_cr en openvpn-cr.c en openvpn-auth-ldap (tambi\u00e9n conocido como el complemento Three Rings Auth-LDAP para OpenVPN) 2.0.4 permite a atacantes con un nombre de usuario LDAP v\u00e1lido y que pueden controlar el campo de contrase\u00f1a de desaf\u00edo/respuesta pasar una cadena con m\u00e1s de 14 dos puntos a este campo y provocar un desbordamiento del b\u00fafer."
    }
  ],
  "id": "CVE-2024-28820",
  "lastModified": "2026-06-17T07:21:50.790",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 6.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.4,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-28820",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-06-27T18:30:13.370526Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-06-27T16:15:10.950",
  "references": [
    {
      "source": "cve@mitre.org",
      "url": "https://github.com/threerings/openvpn-auth-ldap/pull/92"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://github.com/threerings/openvpn-auth-ldap/tags"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://github.com/threerings/openvpn-auth-ldap/pull/92"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://github.com/threerings/openvpn-auth-ldap/tags"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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

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.