CVE-2007-1711

Status: ModifiedMedium (6.8)—Exploit

Severity6.8Medium · CVSS 2.0

Exploitation probability7.73 %higher than 95% of CVEs

Active exploitationNonot in the CISA catalog

Public exploitAvailablePublished on Exploit-DB

Double free vulnerability in the unserializer in PHP 4.4.5 and 4.4.6 allows context-dependent attackers to execute arbitrary code by overwriting variables pointing to (1) the GLOBALS array or (2) the session data in _SESSION. NOTE: this issue was introduced when attempting to patch CVE-2007-1701 (MOPB-31-2007).

CVSS

Base score: 6.8
Version: 2.0
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 7.73 %
Percentile among all scored CVEs: 95
Score date: 10/24/2026

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.

Published on Exploit-DB · PHP 4.4.5/4.4.6 - 'session_decode()' Double-Free (PoC) (3/27/2007)

Affected technologies (1)

PHP — PHP

CWEs

NVD-CWE-Other

References

Show 52 references

Raw JSON (NVD)

Show

{
  "id": "CVE-2007-1711",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": true,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2007-03-27T01:19:00.000",
  "references": [
    {
      "url": "http://docs.info.apple.com/article.html?artnum=306172",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://lists.apple.com/archives/security-announce//2007/Jul/msg00004.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://rhn.redhat.com/errata/RHSA-2007-0154.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://rhn.redhat.com/errata/RHSA-2007-0155.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://rhn.redhat.com/errata/RHSA-2007-0163.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/24910",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/24924",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/24941",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/24945",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/25025",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/25062",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/25445",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/26235",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://security.gentoo.org/glsa/glsa-200705-19.xml",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.debian.org/security/2007/dsa-1282",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.debian.org/security/2007/dsa-1283",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.mandriva.com/security/advisories?name=MDKSA-2007:087",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.mandriva.com/security/advisories?name=MDKSA-2007:088",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.php-security.org/MOPB/MOPB-32-2007.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/466166/100/0/threaded",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/23121",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/25159",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2007/2732",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/33575",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://issues.rpath.com/browse/RPL-1268",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10406",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://docs.info.apple.com/article.html?artnum=306172",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://lists.apple.com/archives/security-announce//2007/Jul/msg00004.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://rhn.redhat.com/errata/RHSA-2007-0154.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://rhn.redhat.com/errata/RHSA-2007-0155.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://rhn.redhat.com/errata/RHSA-2007-0163.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/24910",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/24924",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/24941",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/24945",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/25025",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/25062",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/25445",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/26235",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://security.gentoo.org/glsa/glsa-200705-19.xml",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.debian.org/security/2007/dsa-1282",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.debian.org/security/2007/dsa-1283",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.mandriva.com/security/advisories?name=MDKSA-2007:087",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.mandriva.com/security/advisories?name=MDKSA-2007:088",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.php-security.org/MOPB/MOPB-32-2007.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/466166/100/0/threaded",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/23121",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/25159",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2007/2732",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/33575",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://issues.rpath.com/browse/RPL-1268",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10406",
      "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": "Double free vulnerability in the unserializer in PHP 4.4.5 and 4.4.6 allows context-dependent attackers to execute arbitrary code by overwriting variables pointing to (1) the GLOBALS array or (2) the session data in _SESSION.  NOTE: this issue was introduced when attempting to patch CVE-2007-1701 (MOPB-31-2007)."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de doble liberación (Double Free) en la deserialización en PHP versiones 4.4.5 y 4.4.6 permite a los atacantes dependiendo del contexto ejecutar código arbitrario mediante la sobreescritura de variables que apuntan a (1) la matriz GLOBALS o (2) al dato sesión en _SESSION. NOTA: este problema se introdujo cuando se intentó el parche del CVE-2007-1701 (MOPB-31-2007)."
    }
  ],
  "lastModified": "2026-06-16T22:38:09.333",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:php:php:4.4.5:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4C2AF1D9-33B6-4B2C-9269-426B6B720164"
            },
            {
              "criteria": "cpe:2.3:a:php:php:4.4.6:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "84B70263-37AA-4539-A286-12038A3792C6"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}