GHSA-M7WR-2XF7-CM9P

Vulnerability from github – Published: 2024-03-04 20:13 – Updated: 2025-06-13 20:45
VLAI
Summary
pgx SQL Injection via Line Comment Creation
Details

Impact

SQL injection can occur when all of the following conditions are met:

  1. The non-default simple protocol is used.
  2. A placeholder for a numeric value must be immediately preceded by a minus.
  3. There must be a second placeholder for a string value after the first placeholder; both must be on the same line.
  4. Both parameter values must be user-controlled.

e.g.

Simple mode must be enabled:

// connection string includes "prefer_simple_protocol=true"
// or
// directly enabled in code
config.ConnConfig.PreferSimpleProtocol = true

Parameterized query:

SELECT * FROM example WHERE result=-$1 OR name=$2;

Parameter values:

$1 => -42 $2 => "foo\n 1 AND 1=0 UNION SELECT * FROM secrets; --"

Resulting query after preparation:

SELECT * FROM example WHERE result=--42 OR name= 'foo
1 AND 1=0 UNION SELECT * FROM secrets; --';

Patches

The problem is resolved in v4.18.2.

Workarounds

Do not use the simple protocol or do not place a minus directly before a placeholder.

Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/jackc/pgx"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/jackc/pgx/v4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-27289"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-89"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-03-04T20:13:11Z",
    "nvd_published_at": "2024-03-06T19:15:08Z",
    "severity": "HIGH"
  },
  "details": "### Impact\n\nSQL injection can occur when all of the following conditions are met:\n\n1. The non-default simple protocol is used.\n2. A placeholder for a numeric value must be immediately preceded by a minus.\n3. There must be a second placeholder for a string value after the first placeholder; both\nmust be on the same line.\n4. Both parameter values must be user-controlled.\n\ne.g. \n\nSimple mode must be enabled:\n\n```go\n// connection string includes \"prefer_simple_protocol=true\"\n// or\n// directly enabled in code\nconfig.ConnConfig.PreferSimpleProtocol = true\n```\n\nParameterized query:\n\n```sql\nSELECT * FROM example WHERE result=-$1 OR name=$2;\n```\n\nParameter values:\n\n`$1` =\u003e `-42`\n`$2` =\u003e `\"foo\\n 1 AND 1=0 UNION SELECT * FROM secrets; --\"`\n\nResulting query after preparation:\n\n```sql\nSELECT * FROM example WHERE result=--42 OR name= \u0027foo\n1 AND 1=0 UNION SELECT * FROM secrets; --\u0027;\n```\n\n### Patches\n\nThe problem is resolved in v4.18.2.\n\n### Workarounds\n\nDo not use the simple protocol or do not place a minus directly before a placeholder.",
  "id": "GHSA-m7wr-2xf7-cm9p",
  "modified": "2025-06-13T20:45:26Z",
  "published": "2024-03-04T20:13:11Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/jackc/pgx/security/advisories/GHSA-m7wr-2xf7-cm9p"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-27289"
    },
    {
      "type": "WEB",
      "url": "https://github.com/jackc/pgx/commit/f94eb0e2f96782042c96801b5ac448f44f0a81df"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/jackc/pgx"
    },
    {
      "type": "WEB",
      "url": "https://www.sonarsource.com/blog/double-dash-double-trouble-a-subtle-sql-injection-flaw"
    }
  ],
  "schema_version": "1.4.0",
  "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": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "pgx SQL Injection via Line Comment Creation"
}



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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.

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