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CVE-2012-2329

Status: ModifiedMedium (5)—Exploit
Severity5Medium · CVSS 2.0
Exploitation probability62 %higher than 99% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitAvailablePublished on Exploit-DB · Metasploit module (reliable, widely available exploit)

Buffer overflow in the apache_request_headers function in sapi/cgi/cgi_main.c in PHP 5.4.x before 5.4.3 allows remote attackers to cause a denial of service (application crash) via a long string in the header of an HTTP request.

CVSS

Base score
5
Version
2.0
Vector
AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
62 %
Percentile among all scored CVEs
99
Score date
10/21/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

Affected technologies (1)

PHP — PHP

CWEs

References

Show 16 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2012-2329",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2012-05-11T10:15:48.263",
  "references": [
    {
      "url": "http://secunia.com/advisories/49014",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.php.net/ChangeLog-5.php#5.4.3",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.php.net/archive/2012.php#id2012-05-08-1",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/53455",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://bugs.php.net/bug.php?id=61807",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=820000",
      "tags": [
        "Patch"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/75545",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://h20564.www2.hp.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c03839862",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://secunia.com/advisories/49014",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.php.net/ChangeLog-5.php#5.4.3",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.php.net/archive/2012.php#id2012-05-08-1",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/53455",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bugs.php.net/bug.php?id=61807",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=820000",
      "tags": [
        "Patch"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/75545",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://h20564.www2.hp.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c03839862",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Buffer overflow in the apache_request_headers function in sapi/cgi/cgi_main.c in PHP 5.4.x before 5.4.3 allows remote attackers to cause a denial of service (application crash) via a long string in the header of an HTTP request."
    },
    {
      "lang": "es",
      "value": "Desbordamiento de buffer en la función apache_request_headers de sapi/cgi/cgi_main.c de PHP 5.4.x anteriores a la 5.4.3 permite a atacantes remotos provocar una denegación de servicio (caída de la aplicación) a través de una cadena extensa en la cabecera de una petición HTTP."
    }
  ],
  "lastModified": "2026-06-16T23:41:22.197",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:php:php:5.4.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E7B9B8D2-78B7-4B17-955B-741C7A6F6634"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.4.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5CA2A940-BD69-4D35-AF12-432CB929248B"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.4.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "29BD13F9-86C8-44C4-A860-9A87870A518E"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secalert@redhat.com"
}