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CVE-2006-2659

Estado: ModificadaAlta (7.8)—

libs/comverp.c in Courier MTA before 0.53.2 allows attackers to cause a denial of service (CPU consumption) via unknown vectors involving usernames that contain the "=" (equals) character, which is not properly handled during encoding.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Double Precision Incorporated — Courier MTA

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2006-2659",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 6.9,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2006-05-30T19:02:00.000",
  "references": [
    {
      "url": "http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=368834",
      "tags": [
        "Patch"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/20519",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/20548",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/20792",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/21350",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://security.gentoo.org/glsa/glsa-200608-06.xml",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://securitytracker.com/id?1016248",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.courier-mta.org/beta/patches/verp-fix/README.txt",
      "tags": [
        "Patch"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.debian.org/security/2006/dsa-1101",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/18345",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2006/2214",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/26998",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://usn.ubuntu.com/294-1/",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=368834",
      "tags": [
        "Patch"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/20519",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/20548",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/20792",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/21350",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://security.gentoo.org/glsa/glsa-200608-06.xml",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://securitytracker.com/id?1016248",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.courier-mta.org/beta/patches/verp-fix/README.txt",
      "tags": [
        "Patch"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.debian.org/security/2006/dsa-1101",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/18345",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2006/2214",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/26998",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://usn.ubuntu.com/294-1/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "libs/comverp.c in Courier MTA before 0.53.2 allows attackers to cause a denial of service (CPU consumption) via unknown vectors involving usernames that contain the \"=\" (equals) character, which is not properly handled during encoding."
    }
  ],
  "lastModified": "2026-06-16T22:25:28.817",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:double_precision_incorporated:courier_mta:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5F80A7EC-ACB8-4768-9132-A8514B317AFB",
              "versionEndIncluding": "0.44.2"
            },
            {
              "criteria": "cpe:2.3:a:double_precision_incorporated:courier_mta:0.37.3:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A0869BB9-5308-406D-9107-EFAF25BCF96E"
            },
            {
              "criteria": "cpe:2.3:a:double_precision_incorporated:courier_mta:0.38.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "FAF5F93E-53A5-4A27-8563-14C41FA6A6E6"
            },
            {
              "criteria": "cpe:2.3:a:double_precision_incorporated:courier_mta:0.40:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "EF57BA8C-A955-4C50-B9CF-863CF056E0A4"
            },
            {
              "criteria": "cpe:2.3:a:double_precision_incorporated:courier_mta:0.43:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "59676325-66F3-42EA-935B-1436961E3B50"
            },
            {
              "criteria": "cpe:2.3:a:double_precision_incorporated:courier_mta:0.43.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A801771F-0CBF-40DC-91F2-D4C885B28FD2"
            },
            {
              "criteria": "cpe:2.3:a:double_precision_incorporated:courier_mta:0.43.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D2464DEE-21EF-40B6-A691-6B8A89DED2B8"
            },
            {
              "criteria": "cpe:2.3:a:double_precision_incorporated:courier_mta:0.44:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CA66C89A-F87F-4854-A358-2E8377DD431D"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "evaluatorSolution": "This vulnerability is addressed in the following product release:\r\nDouble Precision Incorporated, Courier MTA, 0.53.2"
}