Vulnerability-Lookup

Vulnerability from bitnami_vulndb

Published

2024-03-06 11:01

Modified

2025-11-06 13:25

Summary

Details

When PgBouncer is configured to use "cert" authentication, a man-in-the-middle attacker can inject arbitrary SQL queries when a connection is first established, despite the use of TLS certificate verification and encryption. This flaw affects PgBouncer versions prior to 1.16.1.

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "pgbouncer",
        "purl": "pkg:bitnami/pgbouncer"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.16.1"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-3935"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:pgbouncer:pgbouncer:*:*:*:*:*:*:*:*"
    ],
    "severity": "High"
  },
  "details": "When PgBouncer is configured to use \"cert\" authentication, a man-in-the-middle attacker can inject arbitrary SQL queries when a connection is first established, despite the use of TLS certificate verification and encryption. This flaw affects PgBouncer versions prior to 1.16.1.",
  "id": "BIT-pgbouncer-2021-3935",
  "modified": "2025-11-06T13:25:46.476Z",
  "published": "2024-03-06T11:01:06.081Z",
  "references": [
    {
      "type": "WEB",
      "url": "http://www.pgbouncer.org/changelog.html#pgbouncer-116x"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2021251"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2022/02/msg00016.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TNPCV3KRDI5PLLLKADFVIOHACQJLZMLI/"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3935"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00032.html"
    }
  ],
  "schema_version": "1.5.0"
}

CVE-2021-3935 (GCVE-0-2021-3935)

Vulnerability from cvelistv5 – Published: 2021-11-22 15:59 – Updated: 2025-11-03 19:26

Summary

Severity ?

No CVSS data available.

CWE

CWE-89

Assigner

fedora

References

URL

Tags

	https://bugzilla.redhat.com/show_bug.cgi?id=2021251	x_refsource_MISC
	http://www.pgbouncer.org/changelog.html#pgbouncer-116x	x_refsource_MISC
	https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
	https://lists.debian.org/debian-lts-announce/2022…	mailing-listx_refsource_MLIST

Impacted products

	Vendor	Product	Version
	n/a	pgbouncer	Affected: PgBouncer 1.16.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T19:26:17.293Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2021251"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "http://www.pgbouncer.org/changelog.html#pgbouncer-116x"
          },
          {
            "name": "FEDORA-2021-761cda0b77",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TNPCV3KRDI5PLLLKADFVIOHACQJLZMLI/"
          },
          {
            "name": "[debian-lts-announce] 20220214 [SECURITY] [DLA 2922-1] pgbouncer security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2022/02/msg00016.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00032.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "pgbouncer",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "PgBouncer 1.16.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "When PgBouncer is configured to use \"cert\" authentication, a man-in-the-middle attacker can inject arbitrary SQL queries when a connection is first established, despite the use of TLS certificate verification and encryption. This flaw affects PgBouncer versions prior to 1.16.1."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-89",
              "description": "CWE-89",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-02-14T14:06:26.000Z",
        "orgId": "92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5",
        "shortName": "fedora"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2021251"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "http://www.pgbouncer.org/changelog.html#pgbouncer-116x"
        },
        {
          "name": "FEDORA-2021-761cda0b77",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TNPCV3KRDI5PLLLKADFVIOHACQJLZMLI/"
        },
        {
          "name": "[debian-lts-announce] 20220214 [SECURITY] [DLA 2922-1] pgbouncer security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2022/02/msg00016.html"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "patrick@puiterwijk.org",
          "ID": "CVE-2021-3935",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "pgbouncer",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "PgBouncer 1.16.1"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "When PgBouncer is configured to use \"cert\" authentication, a man-in-the-middle attacker can inject arbitrary SQL queries when a connection is first established, despite the use of TLS certificate verification and encryption. This flaw affects PgBouncer versions prior to 1.16.1."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-89"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://bugzilla.redhat.com/show_bug.cgi?id=2021251",
              "refsource": "MISC",
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2021251"
            },
            {
              "name": "http://www.pgbouncer.org/changelog.html#pgbouncer-116x",
              "refsource": "MISC",
              "url": "http://www.pgbouncer.org/changelog.html#pgbouncer-116x"
            },
            {
              "name": "FEDORA-2021-761cda0b77",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TNPCV3KRDI5PLLLKADFVIOHACQJLZMLI/"
            },
            {
              "name": "[debian-lts-announce] 20220214 [SECURITY] [DLA 2922-1] pgbouncer security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2022/02/msg00016.html"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5",
    "assignerShortName": "fedora",
    "cveId": "CVE-2021-3935",
    "datePublished": "2021-11-22T15:59:14.000Z",
    "dateReserved": "2021-11-08T00:00:00.000Z",
    "dateUpdated": "2025-11-03T19:26:17.293Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

Vulnerability from bitnami_vulndb

CVE-2021-3935 (GCVE-0-2021-3935)

Tags

Sightings

Nomenclature