FKIE_CVE-2007-4840

Vulnerability from fkie_nvd - Published: 2007-09-12 20:17 - Updated: 2026-06-16 22:44
Severity
Summary
PHP 5.2.4 and earlier allows context-dependent attackers to cause a denial of service (application crash) via (1) a long string in the out_charset parameter to the iconv function; or a long string in the charset parameter to the (2) iconv_mime_decode_headers, (3) iconv_mime_decode, or (4) iconv_strlen function. NOTE: this might not be a vulnerability in most web server environments that support multiple threads, unless these issues can be demonstrated for code execution.
References
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2008-01/msg00006.html
cve@mitre.orghttp://osvdb.org/38916
cve@mitre.orghttp://secunia.com/advisories/27102
cve@mitre.orghttp://secunia.com/advisories/27659
cve@mitre.orghttp://secunia.com/advisories/28658
cve@mitre.orghttp://secunia.com/advisories/30040
cve@mitre.orghttp://securityreason.com/securityalert/3122
cve@mitre.orghttp://wiki.rpath.com/wiki/Advisories:rPSA-2007-0242
cve@mitre.orghttp://www.gentoo.org/security/en/glsa/glsa-200710-02.xml
cve@mitre.orghttp://www.securityfocus.com/archive/1/478730/100/0/threaded
cve@mitre.orghttp://www.securityfocus.com/archive/1/491693/100/0/threaded
cve@mitre.orghttps://issues.rpath.com/browse/RPL-1943
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2008-01/msg00006.html
af854a3a-2127-422b-91ae-364da2661108http://osvdb.org/38916
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/27102
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/27659
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/28658
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/30040
af854a3a-2127-422b-91ae-364da2661108http://securityreason.com/securityalert/3122
af854a3a-2127-422b-91ae-364da2661108http://wiki.rpath.com/wiki/Advisories:rPSA-2007-0242
af854a3a-2127-422b-91ae-364da2661108http://www.gentoo.org/security/en/glsa/glsa-200710-02.xml
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/archive/1/478730/100/0/threaded
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/archive/1/491693/100/0/threaded
af854a3a-2127-422b-91ae-364da2661108https://issues.rpath.com/browse/RPL-1943
Impacted products
Vendor Product Version
php php *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A5B6B1C7-B7B8-495E-9FE5-FF39718DC64E",
              "versionEndIncluding": "5.2.4",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "PHP 5.2.4 and earlier allows context-dependent attackers to cause a denial of service (application crash) via (1) a long string in the out_charset parameter to the iconv function; or a long string in the charset parameter to the (2) iconv_mime_decode_headers, (3) iconv_mime_decode, or (4) iconv_strlen function.  NOTE: this might not be a vulnerability in most web server environments that support multiple threads, unless these issues can be demonstrated for code execution."
    },
    {
      "lang": "es",
      "value": "PHP 5.2.4 y anteriores permite a usuarios locales o remotos dependiendo del contexto provocar una denegaci\u00f3n de serviciO (ca\u00edda de aplicaci\u00f3n) mediante (1) una cadena larga en el par\u00e1metro out_charset para la funci\u00f3n iconf; o una cadena larga en el par\u00e1metro charset para las funciones (2) iconv_mime_decode_headers, (3) iconv_mime_decode, o (4) iconf_strlen. NOTA: esto no podr\u00edan ser una vulnerabilidad en la mayor\u00eda de los entornos de servidor web que soportan m\u00faltiples hilos, a no ser que se pueda demostrar que estos problemas permiten ejecuci\u00f3n de c\u00f3digo."
    }
  ],
  "id": "CVE-2007-4840",
  "lastModified": "2026-06-16T22:44:53.700",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ]
  },
  "published": "2007-09-12T20:17:00.000",
  "references": [
    {
      "source": "cve@mitre.org",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2008-01/msg00006.html"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://osvdb.org/38916"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://secunia.com/advisories/27102"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://secunia.com/advisories/27659"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://secunia.com/advisories/28658"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://secunia.com/advisories/30040"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://securityreason.com/securityalert/3122"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://wiki.rpath.com/wiki/Advisories:rPSA-2007-0242"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://www.gentoo.org/security/en/glsa/glsa-200710-02.xml"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://www.securityfocus.com/archive/1/478730/100/0/threaded"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://www.securityfocus.com/archive/1/491693/100/0/threaded"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://issues.rpath.com/browse/RPL-1943"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2008-01/msg00006.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://osvdb.org/38916"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://secunia.com/advisories/27102"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://secunia.com/advisories/27659"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://secunia.com/advisories/28658"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://secunia.com/advisories/30040"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://securityreason.com/securityalert/3122"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://wiki.rpath.com/wiki/Advisories:rPSA-2007-0242"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.gentoo.org/security/en/glsa/glsa-200710-02.xml"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.securityfocus.com/archive/1/478730/100/0/threaded"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.securityfocus.com/archive/1/491693/100/0/threaded"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://issues.rpath.com/browse/RPL-1943"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vendorComments": [
    {
      "comment": "We do not consider this to be a security issue. For more information please see\nhttp://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=169857#c1\nand http://www.php.net/security-note.php",
      "lastModified": "2007-09-13T00:00:00",
      "organization": "Red Hat"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ],
      "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.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • 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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.