CVE-2015-4644 (GCVE-0-2015-4644)

Vulnerability from cvelistv5 – Published: 2016-05-16 10:00 – Updated: 2024-08-06 06:18
VLAI
Summary
The php_pgsql_meta_data function in pgsql.c in the PostgreSQL (aka pgsql) extension in PHP before 5.4.42, 5.5.x before 5.5.26, and 5.6.x before 5.6.10 does not validate token extraction for table names, which might allow remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted name. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-1352.
Severity
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • n/a
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1131 records in the last 180 days details
References
URL Tags
http://rhn.redhat.com/errata/RHSA-2015-1187.html vendor-advisoryx_refsource_REDHAT
http://www.securitytracker.com/id/1032709 vdb-entryx_refsource_SECTRACK
http://rhn.redhat.com/errata/RHSA-2015-1186.html vendor-advisoryx_refsource_REDHAT
http://www.debian.org/security/2015/dsa-3344 vendor-advisoryx_refsource_DEBIAN
http://www.securityfocus.com/bid/75292 vdb-entryx_refsource_BID
http://www.oracle.com/technetwork/topics/security… x_refsource_CONFIRM
http://openwall.com/lists/oss-security/2015/06/18/6 mailing-listx_refsource_MLIST
http://php.net/ChangeLog-5.php x_refsource_CONFIRM
https://bugs.php.net/bug.php?id=69667 x_refsource_CONFIRM
http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=… x_refsource_CONFIRM
https://security.gentoo.org/glsa/201606-10 vendor-advisoryx_refsource_GENTOO
Date Public
2015-06-11 00:00
Show details on NVD website
To clipboard 

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        "descriptions": [
          {
            "lang": "en",
            "value": "The php_pgsql_meta_data function in pgsql.c in the PostgreSQL (aka pgsql) extension in PHP before 5.4.42, 5.5.x before 5.5.26, and 5.6.x before 5.6.10 does not validate token extraction for table names, which might allow remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted name.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-1352."
          },
          {
            "lang": "es",
            "value": "La funci\u00f3n php_pgsql_meta_data en pgsql.c en la extensi\u00f3n PostgreSQL (tambi\u00e9n conocida como pgsql) en PHP en versiones anteriores a 5.4.42, 5.5.x en versiones anteriores a 5.5.26 y 5.6 en versiones anteriores a 5.6.10 no tiene una extraci\u00f3n de contador v\u00e1lido para nombres de tabla, lo que podr\u00eda permitir a atacantes remotos provocar una denegaci\u00f3n de servicio (referencia a puntero NULL y ca\u00edda de aplicaci\u00f3n) a trav\u00e9s de un nombre manipulado. NOTA: esta vulnerabilidad existe debido a una soluci\u00f3n incompleta de CVE-2015-1352."
          }
        ],
        "evaluatorComment": "\u003ca href=\"http://cwe.mitre.org/data/definitions/476.html\"\u003eCWE-476: NULL Pointer Dereference\u003c/a\u003e",
        "id": "CVE-2015-4644",
        "lastModified": "2026-05-06T22:30:45.220",
        "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
            }
          ],
          "cvssMetricV30": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.0"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2016-05-16T10:59:16.503",
        "references": [
          {
            "source": "secalert@redhat.com",
            "url": "http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=2cc4e69cc6d8dbc4b3568ad3dd583324a7c11d64"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://openwall.com/lists/oss-security/2015/06/18/6"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://php.net/ChangeLog-5.php"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://rhn.redhat.com/errata/RHSA-2015-1186.html"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://rhn.redhat.com/errata/RHSA-2015-1187.html"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://www.debian.org/security/2015/dsa-3344"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://www.securityfocus.com/bid/75292"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://www.securitytracker.com/id/1032709"
          },
          {
            "source": "secalert@redhat.com",
            "url": "https://bugs.php.net/bug.php?id=69667"
          },
          {
            "source": "secalert@redhat.com",
            "url": "https://security.gentoo.org/glsa/201606-10"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=2cc4e69cc6d8dbc4b3568ad3dd583324a7c11d64"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://openwall.com/lists/oss-security/2015/06/18/6"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://php.net/ChangeLog-5.php"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://rhn.redhat.com/errata/RHSA-2015-1186.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://rhn.redhat.com/errata/RHSA-2015-1187.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.debian.org/security/2015/dsa-3344"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.securityfocus.com/bid/75292"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.securitytracker.com/id/1032709"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://bugs.php.net/bug.php?id=69667"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://security.gentoo.org/glsa/201606-10"
          }
        ],
        "sourceIdentifier": "secalert@redhat.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "NVD-CWE-Other"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-11-07T10:53:00+00:00",
      "cve": "CVE-2015-4644",
      "id": "CVE-2015-4644",
      "initial_release_date": "2015-06-11T00:00:00+00:00",
      "product_status:fixed": "591",
      "product_status:known_affected": "55",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "php: NULL pointer dereference in php_pgsql_meta_data()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2015/cve-2015-4644.json",
      "version": "3"
    }
  }
}



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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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • 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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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