CVE-2016-5423 (GCVE-0-2016-5423)

Vulnerability from cvelistv5 – Published: 2016-12-09 23:00 – Updated: 2024-08-06 01:00
VLAI
Summary
PostgreSQL before 9.1.23, 9.2.x before 9.2.18, 9.3.x before 9.3.14, 9.4.x before 9.4.9, and 9.5.x before 9.5.4 allow remote authenticated users to cause a denial of service (NULL pointer dereference and server crash), obtain sensitive memory information, or possibly execute arbitrary code via (1) a CASE expression within the test value subexpression of another CASE or (2) inlining of an SQL function that implements the equality operator used for a CASE expression involving values of different types.
Severity
8.3 (High)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
CWE
  • n/a
Assigner
References
Date Public
2016-08-11 00:00
Show details on NVD website
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                    "criteria": "cpe:2.3:a:postgresql:postgresql:9.3.10:*:*:*:*:*:*:*",
                    "matchCriteriaId": "064BF155-7E2D-47B9-BD2B-C6E9FC06F5FC",
                    "vulnerable": true
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                  {
                    "criteria": "cpe:2.3:a:postgresql:postgresql:9.3.11:*:*:*:*:*:*:*",
                    "matchCriteriaId": "676A81BD-7EEE-4770-B9AC-451B09844D6C",
                    "vulnerable": true
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                  {
                    "criteria": "cpe:2.3:a:postgresql:postgresql:9.3.12:*:*:*:*:*:*:*",
                    "matchCriteriaId": "30F23D38-BDD6-48E6-A6B2-29CD962EED99",
                    "vulnerable": true
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                  {
                    "criteria": "cpe:2.3:a:postgresql:postgresql:9.3.13:*:*:*:*:*:*:*",
                    "matchCriteriaId": "89833234-3890-4E2E-8FCF-09925D83ED67",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:postgresql:postgresql:9.4:*:*:*:*:*:*:*",
                    "matchCriteriaId": "77D1323D-3096-4D0F-823A-ECAC9017646D",
                    "vulnerable": true
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                    "matchCriteriaId": "8A587AF3-5E70-4455-8621-DFD048207DE2",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:postgresql:postgresql:9.4.2:*:*:*:*:*:*:*",
                    "matchCriteriaId": "526AFF26-B3EC-41C3-AC4C-85BFA3F99AC8",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:postgresql:postgresql:9.4.3:*:*:*:*:*:*:*",
                    "matchCriteriaId": "89D2CAB7-C3D9-4F21-B902-2E498D00EFEB",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:postgresql:postgresql:9.4.4:*:*:*:*:*:*:*",
                    "matchCriteriaId": "88797795-8B1C-455F-8C52-6169B2E47D53",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:postgresql:postgresql:9.4.5:*:*:*:*:*:*:*",
                    "matchCriteriaId": "DBDE0CC8-F1DF-4723-8FCB-9A33EA8B12D3",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:postgresql:postgresql:9.4.6:*:*:*:*:*:*:*",
                    "matchCriteriaId": "90F13667-019B-49DF-929C-3D376FCDE6E4",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:postgresql:postgresql:9.4.7:*:*:*:*:*:*:*",
                    "matchCriteriaId": "B9E20AA3-C0D3-492C-AF3B-9F61550E6983",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:postgresql:postgresql:9.4.8:*:*:*:*:*:*:*",
                    "matchCriteriaId": "251C78CA-EEC0-49A8-A3D2-3C86D16CCB7F",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:postgresql:postgresql:9.5:*:*:*:*:*:*:*",
                    "matchCriteriaId": "9FF7FC5B-C9E3-4109-B3D6-9AC06F75DCB3",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:postgresql:postgresql:9.5.1:*:*:*:*:*:*:*",
                    "matchCriteriaId": "D2C15A86-9ED9-492E-877B-86963DAA761A",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:postgresql:postgresql:9.5.2:*:*:*:*:*:*:*",
                    "matchCriteriaId": "9EF74623-EF0E-455D-ADEB-9E336B539D86",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:postgresql:postgresql:9.5.3:*:*:*:*:*:*:*",
                    "matchCriteriaId": "FACD7AB7-34E9-4DFC-A788-7B9BF745D780",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "PostgreSQL before 9.1.23, 9.2.x before 9.2.18, 9.3.x before 9.3.14, 9.4.x before 9.4.9, and 9.5.x before 9.5.4 allow remote authenticated users to cause a denial of service (NULL pointer dereference and server crash), obtain sensitive memory information, or possibly execute arbitrary code via (1) a CASE expression within the test value subexpression of another CASE or (2) inlining of an SQL function that implements the equality operator used for a CASE expression involving values of different types."
          },
          {
            "lang": "es",
            "value": "PostgreSQL en versiones anteriores a 9.1.23, 9.2.x en versiones anteriores a 9.2.18, 9.3.x en versiones anteriores a 9.3.14, 9.4.x en versiones anteriores a 9.4.9 y 9.5.x en versiones anteriores a 9.5.4 permiten a usuarios remotos autenticados provocar una denegaci\u00f3n de servicio (referencia a puntero NULL y ca\u00edda del servidor), obtener informaci\u00f3n de memoria sensible, o posiblemente ejecutar c\u00f3digo arbitrario a trav\u00e9s de (1) una expresi\u00f3n CASE dentro de la subexpresi\u00f3n de valor de prueba de otro CASE o (2) el inicio de una funci\u00f3n SQL que implementa el operador de igualdad utilizado para una expresi\u00f3n CASE que implica valores de diferentes tipos."
          }
        ],
        "id": "CVE-2016-5423",
        "lastModified": "2026-05-06T22:30:45.220",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "SINGLE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 6.5,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
                "version": "2.0"
              },
              "exploitabilityScore": 8.0,
              "impactScore": 6.4,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV30": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 8.3,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "LOW",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H",
                "version": "3.0"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 5.5,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2016-12-09T23:59:00.160",
        "references": [
          {
            "source": "secalert@redhat.com",
            "url": "http://rhn.redhat.com/errata/RHSA-2016-1781.html"
          },
          {
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            "url": "http://rhn.redhat.com/errata/RHSA-2016-1820.html"
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            "url": "http://rhn.redhat.com/errata/RHSA-2016-1821.html"
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          },
          {
            "source": "secalert@redhat.com",
            "tags": [
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            ],
            "url": "http://www.debian.org/security/2016/dsa-3646"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
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              "VDB Entry"
            ],
            "url": "http://www.securityfocus.com/bid/92433"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "http://www.securitytracker.com/id/1036617"
          },
          {
            "source": "secalert@redhat.com",
            "url": "https://access.redhat.com/errata/RHSA-2017:2425"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Issue Tracking",
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1364001"
          },
          {
            "source": "secalert@redhat.com",
            "url": "https://security.gentoo.org/glsa/201701-33"
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          {
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            "url": "https://www.postgresql.org/docs/current/static/release-9-1-23.html"
          },
          {
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            "url": "https://www.postgresql.org/docs/current/static/release-9-2-18.html"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Release Notes",
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          },
          {
            "source": "secalert@redhat.com",
            "tags": [
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          },
          {
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              "Release Notes",
              "Vendor Advisory"
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            "url": "https://www.postgresql.org/docs/current/static/release-9-5-4.html"
          },
          {
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            "url": "http://rhn.redhat.com/errata/RHSA-2016-1781.html"
          },
          {
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          },
          {
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          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://rhn.redhat.com/errata/RHSA-2016-2606.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
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            "url": "http://www.debian.org/security/2016/dsa-3646"
          },
          {
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          },
          {
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          },
          {
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          },
          {
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            "tags": [
              "Issue Tracking",
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          },
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          },
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          },
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              "Vendor Advisory"
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            "url": "https://www.postgresql.org/docs/current/static/release-9-1-23.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Release Notes",
              "Vendor Advisory"
            ],
            "url": "https://www.postgresql.org/docs/current/static/release-9-2-18.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
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              "Vendor Advisory"
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            "url": "https://www.postgresql.org/docs/current/static/release-9-3-14.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Release Notes",
              "Vendor Advisory"
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          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Release Notes",
              "Vendor Advisory"
            ],
            "url": "https://www.postgresql.org/docs/current/static/release-9-5-4.html"
          }
        ],
        "sourceIdentifier": "secalert@redhat.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-476"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T11:02:59+00:00",
      "cve": "CVE-2016-5423",
      "id": "CVE-2016-5423",
      "initial_release_date": "2016-08-11T00:00:00+00:00",
      "product_status:fixed": "524",
      "product_status:known_affected": "15",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "postgresql: CASE/WHEN with inlining can cause untrusted pointer dereference",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2016/cve-2016-5423.json",
      "version": "3"
    }
  }
}



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Taxonomy of the tags.





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

Author Source Type Date Other

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.


Detection rules are retrieved from Rulezet.


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.