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USN-4633-1 (UBUNTU-CVE-2020-25694)

Vulnerability from osv_ubuntu – Published: 2020-11-17 13:03 – Updated: 2026-04-27 14:11 – Source website
VLAI
Summary
postgresql-10, postgresql-12, postgresql-9.5 vulnerabilities
Details

Peter Eisentraut discovered that PostgreSQL incorrectly handled connection security settings. Client applications could possibly be connecting with certain security parameters dropped, contrary to expectations. (CVE-2020-25694)

Etienne Stalmans discovered that PostgreSQL incorrectly handled the security restricted operation sandbox. An authenticated remote attacker could possibly use this issue to execute arbitrary SQL functions as a superuser. (CVE-2020-25695)

Nick Cleaton discovered that PostgreSQL incorrectly handled the \gset meta-command. A remote attacker with a compromised server could possibly use this issue to execute arbitrary code. (CVE-2020-25696)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-25694",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-25695",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-25696",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libecpg-compat3",
            "binary_version": "9.5.24-0ubuntu0.16.04.1"
          },
          {
            "binary_name": "libecpg6",
            "binary_version": "9.5.24-0ubuntu0.16.04.1"
          },
          {
            "binary_name": "libpgtypes3",
            "binary_version": "9.5.24-0ubuntu0.16.04.1"
          },
          {
            "binary_name": "libpq5",
            "binary_version": "9.5.24-0ubuntu0.16.04.1"
          },
          {
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            "binary_version": "9.5.24-0ubuntu0.16.04.1"
          },
          {
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            "binary_version": "9.5.24-0ubuntu0.16.04.1"
          },
          {
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            "binary_version": "9.5.24-0ubuntu0.16.04.1"
          },
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            "binary_name": "postgresql-doc-9.5",
            "binary_version": "9.5.24-0ubuntu0.16.04.1"
          },
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            "binary_version": "9.5.24-0ubuntu0.16.04.1"
          },
          {
            "binary_name": "postgresql-plpython-9.5",
            "binary_version": "9.5.24-0ubuntu0.16.04.1"
          },
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            "binary_version": "9.5.24-0ubuntu0.16.04.1"
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            "binary_name": "postgresql-pltcl-9.5",
            "binary_version": "9.5.24-0ubuntu0.16.04.1"
          },
          {
            "binary_name": "postgresql-server-dev-9.5",
            "binary_version": "9.5.24-0ubuntu0.16.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "postgresql-9.5",
        "purl": "pkg:deb/ubuntu/postgresql-9.5@9.5.24-0ubuntu0.16.04.1?arch=source\u0026distro=xenial"
      },
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        "9.5.0-2",
        "9.5.0-3",
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        "9.5.9-0ubuntu0.16.04",
        "9.5.10-0ubuntu0.16.04",
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              "id": "CVE-2020-25694",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-25695",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-25696",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libecpg-compat3",
            "binary_version": "10.15-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "libecpg6",
            "binary_version": "10.15-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "libpgtypes3",
            "binary_version": "10.15-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "libpq5",
            "binary_version": "10.15-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "postgresql-10",
            "binary_version": "10.15-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "postgresql-client-10",
            "binary_version": "10.15-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "postgresql-doc-10",
            "binary_version": "10.15-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "postgresql-plperl-10",
            "binary_version": "10.15-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "postgresql-plpython-10",
            "binary_version": "10.15-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "postgresql-plpython3-10",
            "binary_version": "10.15-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "postgresql-pltcl-10",
            "binary_version": "10.15-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "postgresql-server-dev-10",
            "binary_version": "10.15-0ubuntu0.18.04.1"
          }
        ]
      },
      "package": {
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        "name": "postgresql-10",
        "purl": "pkg:deb/ubuntu/postgresql-10@10.15-0ubuntu0.18.04.1?arch=source\u0026distro=bionic"
      },
      "ranges": [
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            }
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        "10.1-2",
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        "10.6-0ubuntu0.18.04.1",
        "10.7-0ubuntu0.18.04.1",
        "10.8-0ubuntu0.18.04.1",
        "10.9-0ubuntu0.18.04.1",
        "10.10-0ubuntu0.18.04.1",
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        "10.14-0ubuntu0.18.04.1"
      ]
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    {
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              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-25695",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-25696",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libecpg-compat3",
            "binary_version": "12.5-0ubuntu0.20.04.1"
          },
          {
            "binary_name": "libecpg6",
            "binary_version": "12.5-0ubuntu0.20.04.1"
          },
          {
            "binary_name": "libpgtypes3",
            "binary_version": "12.5-0ubuntu0.20.04.1"
          },
          {
            "binary_name": "libpq5",
            "binary_version": "12.5-0ubuntu0.20.04.1"
          },
          {
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            "binary_version": "12.5-0ubuntu0.20.04.1"
          },
          {
            "binary_name": "postgresql-client-12",
            "binary_version": "12.5-0ubuntu0.20.04.1"
          },
          {
            "binary_name": "postgresql-doc-12",
            "binary_version": "12.5-0ubuntu0.20.04.1"
          },
          {
            "binary_name": "postgresql-plperl-12",
            "binary_version": "12.5-0ubuntu0.20.04.1"
          },
          {
            "binary_name": "postgresql-plpython3-12",
            "binary_version": "12.5-0ubuntu0.20.04.1"
          },
          {
            "binary_name": "postgresql-pltcl-12",
            "binary_version": "12.5-0ubuntu0.20.04.1"
          },
          {
            "binary_name": "postgresql-server-dev-12",
            "binary_version": "12.5-0ubuntu0.20.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "postgresql-12",
        "purl": "pkg:deb/ubuntu/postgresql-12@12.5-0ubuntu0.20.04.1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "12.5-0ubuntu0.20.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "12.0-1",
        "12.1-1",
        "12.1-2build1",
        "12.2-1",
        "12.2-1ubuntu2",
        "12.2-4",
        "12.4-0ubuntu0.20.04.1"
      ]
    }
  ],
  "aliases": [],
  "details": "Peter Eisentraut discovered that PostgreSQL incorrectly handled connection\nsecurity settings. Client applications could possibly be connecting with\ncertain security parameters dropped, contrary to expectations.\n(CVE-2020-25694)\n\nEtienne Stalmans discovered that PostgreSQL incorrectly handled the\nsecurity restricted operation sandbox. An authenticated remote attacker\ncould possibly use this issue to execute arbitrary SQL functions as a\nsuperuser. (CVE-2020-25695)\n\nNick Cleaton discovered that PostgreSQL incorrectly handled the \\gset\nmeta-command. A remote attacker with a compromised server could possibly\nuse this issue to execute arbitrary code. (CVE-2020-25696)\n",
  "id": "USN-4633-1",
  "modified": "2026-04-27T14:11:26Z",
  "published": "2020-11-17T13:03:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4633-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-25694"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-25695"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-25696"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "postgresql-10, postgresql-12, postgresql-9.5 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2020-25694",
    "UBUNTU-CVE-2020-25695",
    "UBUNTU-CVE-2020-25696"
  ]
}



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