pysec - pysec-2021-333

pysec-2021-333

Vulnerability from pysec

Published

2021-09-20 17:15

Modified

2023-04-09 10:46

Details

sqlparse is a non-validating SQL parser module for Python. In sqlparse versions 0.4.0 and 0.4.1 there is a regular Expression Denial of Service in sqlparse vulnerability. The regular expression may cause exponential backtracking on strings containing many repetitions of '\r\n' in SQL comments. Only the formatting feature that removes comments from SQL statements is affected by this regular expression. As a workaround don't use the sqlformat.format function with keyword strip_comments=True or the --strip-comments command line flag when using the sqlformat command line tool. The issues has been fixed in sqlparse 0.4.2.

Aliases

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "sqlparse",
        "purl": "pkg:pypi/sqlparse"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1499cffcd7c4d635b4297b44d48fb4fe94cf988e"
            },
            {
              "fixed": "8238a9e450ed1524e40cb3a8b0b3c00606903aeb"
            }
          ],
          "repo": "https://github.com/andialbrecht/sqlparse",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0.4.0"
            },
            {
              "fixed": "0.4.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.4.0",
        "0.4.1"
      ]
    }
  ],
  "aliases": [
    "CVE-2021-32839",
    "GHSA-p5w8-wqhj-9hhf"
  ],
  "details": "sqlparse is a non-validating SQL parser module for Python. In sqlparse versions 0.4.0 and 0.4.1 there is a regular Expression Denial of Service in sqlparse vulnerability. The regular expression may cause exponential backtracking on strings containing many repetitions of \u0027\\r\\n\u0027 in SQL comments. Only the formatting feature that removes comments from SQL statements is affected by this regular expression. As a workaround don\u0027t use the sqlformat.format function with keyword strip_comments=True or the --strip-comments command line flag when using the sqlformat command line tool. The issues has been fixed in sqlparse 0.4.2.",
  "id": "PYSEC-2021-333",
  "modified": "2023-04-09T10:46:38.256842Z",
  "published": "2021-09-20T17:15:00Z",
  "references": [
    {
      "type": "FIX",
      "url": "https://github.com/andialbrecht/sqlparse/commit/8238a9e450ed1524e40cb3a8b0b3c00606903aeb"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/andialbrecht/sqlparse/security/advisories/GHSA-p5w8-wqhj-9hhf"
    }
  ]
}

ghsa-p5w8-wqhj-9hhf

Vulnerability from github

Published

2021-09-10 17:56

Modified

2024-10-28 14:25

Severity ?

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.7 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Summary

StripComments filter contains a regular expression that is vulnerable to ReDOS (Regular Expression Denial of Service)

Details

Impact

The formatter function that strips comments from a SQL contains a regular expression that is vulnerable to ReDoS (Regular Expression Denial of Service). The regular expression may cause exponential backtracking on strings containing many repetitions of '\r\n' in SQL comments.

Patches

The issues has been fixed in sqlparse 0.4.2.

Workarounds

Only the formatting feature that removes comments from SQL statements is affected by this regular expression. As a workaround don't use the sqlformat.format function with keyword strip_comments=True or the --strip-comments command line flag when using the sqlformat command line tool.

References

This issue was discovered by GitHub team members @erik-krogh and @yoff. It was found using a CodeQL query which identifies inefficient regular expressions. You can see the results of the query on python-sqlparse by following this link.

For more information

If you have any questions or comments about this advisory: * Open an issue in sqlparse issue tracker * Email us at albrecht.andi@gmail.com

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "sqlparse"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.4.0"
            },
            {
              "fixed": "0.4.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-32839"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-09-10T17:13:29Z",
    "nvd_published_at": "2021-09-20T17:15:00Z",
    "severity": "HIGH"
  },
  "details": "### Impact\nThe formatter function that strips comments from a SQL contains a regular expression that is vulnerable to [ReDoS](https://owasp.org/www-community/attacks/Regular_expression_Denial_of_Service_-_ReDoS) (Regular Expression Denial of Service). The regular expression may cause exponential backtracking on strings containing many repetitions of \u0027\\r\\n\u0027 in SQL comments.\n\n### Patches\nThe issues has been fixed in sqlparse 0.4.2.\n\n### Workarounds\nOnly the formatting feature that removes comments from SQL statements is affected by this regular expression. As a workaround don\u0027t use the `sqlformat.format` function with keyword `strip_comments=True` or the `--strip-comments` command line flag when using the `sqlformat` command line tool.\n\n### References\nThis issue was discovered by GitHub team members @erik-krogh and @yoff. It was found using a [CodeQL](https://codeql.github.com/) query which identifies inefficient regular expressions. You can see the results of the query on python-sqlparse by following [this link](https://lgtm.com/query/2223658096471222354/). \n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [sqlparse issue tracker](https://github.com/andialbrecht/sqlparse/issues)\n* Email us at [albrecht.andi@gmail.com](mailto:albrecht.andi@gmail.com)\n",
  "id": "GHSA-p5w8-wqhj-9hhf",
  "modified": "2024-10-28T14:25:37Z",
  "published": "2021-09-10T17:56:06Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/andialbrecht/sqlparse/security/advisories/GHSA-p5w8-wqhj-9hhf"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-32839"
    },
    {
      "type": "WEB",
      "url": "https://github.com/andialbrecht/sqlparse/commit/8238a9e450ed1524e40cb3a8b0b3c00606903aeb"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/andialbrecht/sqlparse"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/sqlparse/PYSEC-2021-333.yaml"
    },
    {
      "type": "ADVISORY",
      "url": "https://securitylab.github.com/advisories/GHSL-2021-107-andialbrecht-sqlparse"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "StripComments filter contains a regular expression that is vulnerable to ReDOS (Regular Expression Denial of Service)"
}

cve-2021-32839

Vulnerability from cvelistv5

Published

2021-09-20 17:10

Modified

2024-08-03 23:33

Severity ?

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

Regular Expression Denial of Service in sqlparse

References

▼	URL	Tags
	https://github.com/andialbrecht/sqlparse/security/advisories/GHSA-p5w8-wqhj-9hhf	x_refsource_CONFIRM
	https://github.com/andialbrecht/sqlparse/commit/8238a9e450ed1524e40cb3a8b0b3c00606903aeb	x_refsource_MISC

Impacted products

▼	Vendor	Product
	andialbrecht	sqlparse

Show details on NVD website

JSON

To clipboard

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        "references": [
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            "tags": [
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            "url": "https://github.com/andialbrecht/sqlparse/security/advisories/GHSA-p5w8-wqhj-9hhf"
          },
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            ],
            "url": "https://github.com/andialbrecht/sqlparse/commit/8238a9e450ed1524e40cb3a8b0b3c00606903aeb"
          }
        ],
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    "cna": {
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      ],
      "metrics": [
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            "attackComplexity": "LOW",
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            "baseScore": 7.5,
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            "confidentialityImpact": "NONE",
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}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted

pysec-2021-333

Vulnerability from pysec

ghsa-p5w8-wqhj-9hhf

Vulnerability from github

Impact

Patches

Workarounds

References

For more information

cve-2021-32839

Vulnerability from cvelistv5

Tags

Sightings

Nomenclature