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CVE-2012-6113

Status: ModifiedMedium (5)—
Severity5Medium · CVSS 2.0
Exploitation probability2.54 %higher than 85% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

The openssl_encrypt function in ext/openssl/openssl.c in PHP 5.3.9 through 5.3.13 does not initialize a certain variable, which allows remote attackers to obtain sensitive information from process memory by providing zero bytes of input data.

CVSS

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

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
2.54 %
Percentile among all scored CVEs
85
Score date
10/22/2026

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).

Affected technologies (1)

PHP — PHP

CWEs

References

Show 10 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2012-6113",
  "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:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "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": "2013-01-19T21:55:01.370",
  "references": [
    {
      "url": "http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=270a406ac94b5fc5cc9ef59fc61e3b4b95648a3e",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://openwall.com/lists/oss-security/2013/01/18/6",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.ubuntu.com/usn/USN-1702-1",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://bugs.launchpad.net/ubuntu/+source/php5/+bug/1099793",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://bugs.php.net/bug.php?id=61413",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=270a406ac94b5fc5cc9ef59fc61e3b4b95648a3e",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://openwall.com/lists/oss-security/2013/01/18/6",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.ubuntu.com/usn/USN-1702-1",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bugs.launchpad.net/ubuntu/+source/php5/+bug/1099793",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bugs.php.net/bug.php?id=61413",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The openssl_encrypt function in ext/openssl/openssl.c in PHP 5.3.9 through 5.3.13 does not initialize a certain variable, which allows remote attackers to obtain sensitive information from process memory by providing zero bytes of input data."
    },
    {
      "lang": "es",
      "value": "La función openssl_encrypt en ext/openssl/openssl.c en PHP v5.3.9 hasta v5.3.13 no inicia una cierta variable, que permite ataques para obtener información de procesos en memoria proporcionando cero bytes de entrada."
    }
  ],
  "lastModified": "2026-06-16T23:47:51.040",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:php:php:5.3.9:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "EC3F1891-032D-409C-904C-A415D2323DFC"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.3.10:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4B13826D-06B2-4A46-AB24-092F6935958D"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.3.11:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1B6528FC-51BE-4E30-B282-D9841553BA26"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.3.12:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "66CF9452-6225-4726-822B-C7CD620A1D6E"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.3.13:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A953FF53-1106-42D3-BE4A-4F27C7C42F52"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secalert@redhat.com"
}