FKIE_CVE-2023-42119

Vulnerability from fkie_nvd - Published: 2024-05-03 03:15 - Updated: 2025-11-03 22:16
Severity ?
3.1 (Low) - CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Summary
Exim dnsdb Out-Of-Bounds Read Information Disclosure Vulnerability. This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of Exim. Authentication is not required to exploit this vulnerability. The specific flaw exists within the smtp service, which listens on TCP port 25 by default. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the service account. . Was ZDI-CAN-17643.
References
zdi-disclosures@trendmicro.comhttps://www.zerodayinitiative.com/advisories/ZDI-23-1473/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/10/msg00029.html
af854a3a-2127-422b-91ae-364da2661108https://www.zerodayinitiative.com/advisories/ZDI-23-1473/Third Party Advisory
Impacted products
Vendor Product Version
exim exim *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "50C12C49-11A7-4EFF-AB7F-97B4F637C947",
              "versionEndExcluding": "4.96.2",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Exim dnsdb Out-Of-Bounds Read Information Disclosure Vulnerability. This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of Exim. Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the smtp service, which listens on TCP port 25 by default. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the service account.\n. Was ZDI-CAN-17643."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de divulgaci\u00f3n de informaci\u00f3n de lectura fuera de los l\u00edmites de Exim dnsdb. Esta vulnerabilidad permite a atacantes adyacentes a la red revelar informaci\u00f3n confidencial sobre las instalaciones afectadas de Exim. No se requiere autenticaci\u00f3n para aprovechar esta vulnerabilidad. La falla espec\u00edfica existe dentro del servicio smtp, que escucha en el puerto TCP 25 de forma predeterminada. El problema se debe a la falta de una validaci\u00f3n adecuada de los datos proporcionados por el usuario, lo que puede provocar una lectura m\u00e1s all\u00e1 del final de un b\u00fafer asignado. Un atacante puede aprovechar esto junto con otras vulnerabilidades para ejecutar c\u00f3digo arbitrario en el contexto de la cuenta de servicio. Era ZDI-CAN-17643."
    }
  ],
  "id": "CVE-2023-42119",
  "lastModified": "2025-11-03T22:16:26.817",
  "metrics": {
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 3.1,
          "baseSeverity": "LOW",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.0"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 1.4,
        "source": "zdi-disclosures@trendmicro.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2024-05-03T03:15:50.803",
  "references": [
    {
      "source": "zdi-disclosures@trendmicro.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.zerodayinitiative.com/advisories/ZDI-23-1473/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2024/10/msg00029.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.zerodayinitiative.com/advisories/ZDI-23-1473/"
    }
  ],
  "sourceIdentifier": "zdi-disclosures@trendmicro.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "zdi-disclosures@trendmicro.com",
      "type": "Secondary"
    }
  ]
}


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