gsd-2023-51766
Vulnerability from gsd
Modified
2023-12-25 06:01
Details
Exim through 4.97 allows SMTP smuggling in certain configurations. Remote attackers can use a published exploitation technique to inject e-mail messages that appear to originate from the Exim server, allowing bypass of an SPF protection mechanism. This occurs because Exim supports <LF>.<CR><LF> but some other popular e-mail servers do not.
Aliases


To clipboard 

{
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2023-51766"
      ],
      "details": "Exim through 4.97 allows SMTP smuggling in certain configurations. Remote attackers can use a published exploitation technique to inject e-mail messages that appear to originate from the Exim server, allowing bypass of an SPF protection mechanism. This occurs because Exim supports \u003cLF\u003e.\u003cCR\u003e\u003cLF\u003e but some other popular e-mail servers do not.",
      "id": "GSD-2023-51766",
      "modified": "2023-12-25T06:01:53.023560Z",
      "schema_version": "1.4.0"
    }
  },
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        "STATE": "PUBLIC"
      },
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                    "product_name": "n/a",
                    "version": {
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                          "version_value": "n/a"
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        "reference_data": [
          {
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          },
          {
            "name": "[oss-security] 20231224 Re: Re: New SMTP smuggling attack",
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          },
          {
            "name": "[oss-security] 20231225 Re: Re: New SMTP smuggling attack",
            "refsource": "MLIST",
            "url": "http://www.openwall.com/lists/oss-security/2023/12/25/1"
          },
          {
            "name": "https://git.exim.org/exim.git/commit/5bb786d5ad568a88d50d15452aacc8404047e5ca",
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            "url": "https://git.exim.org/exim.git/commit/cf1376206284f2a4f11e32d931d4aade34c206c5"
          },
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            "name": "https://bugzilla.redhat.com/show_bug.cgi?id=2255852",
            "refsource": "MISC",
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2255852"
          },
          {
            "name": "https://fahrplan.events.ccc.de/congress/2023/fahrplan/events/11782.html",
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            "refsource": "MLIST",
            "url": "http://www.openwall.com/lists/oss-security/2023/12/29/2"
          },
          {
            "name": "https://github.com/Exim/exim/blob/master/doc/doc-txt/cve-2023-51766",
            "refsource": "CONFIRM",
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          },
          {
            "name": "[oss-security] 20240101 Re: CVE-2023-51766: Exim: SMTP smuggling",
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          {
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          },
          {
            "lang": "es",
            "value": "Exim hasta 4.97 permite el contrabando SMTP en ciertas configuraciones. Los atacantes remotos pueden utilizar una t\u00e9cnica de explotaci\u00f3n publicada para inyectar mensajes de correo electr\u00f3nico que parecen originarse en el servidor Exim, permitiendo omitir un mecanismo de protecci\u00f3n SPF. Esto ocurre porque Exim admite . pero algunos otros servidores de correo electr\u00f3nico populares no lo hacen."
          }
        ],
        "id": "CVE-2023-51766",
        "lastModified": "2024-02-02T02:22:45.693",
        "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",
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              "impactScore": 1.4,
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        "published": "2023-12-24T06:15:07.673",
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        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Analyzed",
        "weaknesses": [
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                "lang": "en",
                "value": "CWE-345"
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            "source": "nvd@nist.gov",
            "type": "Primary"
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      }
    }
  }
}


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