pysec - pysec-2021-356

pysec-2021-356

Vulnerability from pysec

Published

2021-09-27 13:15

Modified

2021-10-01 22:29

Details

nltk is vulnerable to Inefficient Regular Expression Complexity

Aliases

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "nltk",
        "purl": "pkg:pypi/nltk"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "277711ab1dec729e626b27aab6fa35ea5efbd7e6"
            }
          ],
          "repo": "https://github.com/nltk/nltk",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.6.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.8",
        "0.9",
        "0.9.3",
        "0.9.4",
        "0.9.5",
        "0.9.6",
        "0.9.7",
        "0.9.8",
        "0.9.9",
        "2.0.1",
        "2.0.1rc1",
        "2.0.1rc2-git",
        "2.0.1rc3",
        "2.0.1rc4",
        "2.0.2",
        "2.0.3",
        "2.0.4",
        "2.0.5",
        "2.0b4",
        "2.0b5",
        "2.0b6",
        "2.0b7",
        "2.0b8",
        "2.0b9",
        "3.0.0",
        "3.0.0b1",
        "3.0.0b2",
        "3.0.1",
        "3.0.2",
        "3.0.3",
        "3.0.4",
        "3.0.5",
        "3.1",
        "3.2",
        "3.2.1",
        "3.2.2",
        "3.2.3",
        "3.2.4",
        "3.2.5",
        "3.3",
        "3.4",
        "3.4.1",
        "3.4.2",
        "3.4.3",
        "3.4.4",
        "3.4.5",
        "3.5",
        "3.5b1",
        "3.6",
        "3.6.1",
        "3.6.2",
        "3.6.3"
      ]
    }
  ],
  "aliases": [
    "CVE-2021-3828",
    "GHSA-2ww3-fxvq-293j"
  ],
  "details": "nltk is vulnerable to Inefficient Regular Expression Complexity",
  "id": "PYSEC-2021-356",
  "modified": "2021-10-01T22:29:03.465380Z",
  "published": "2021-09-27T13:15:00Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://huntr.dev/bounties/d19aed43-75bc-4a03-91a0-4d0bb516bc32"
    },
    {
      "type": "FIX",
      "url": "https://github.com/nltk/nltk/commit/277711ab1dec729e626b27aab6fa35ea5efbd7e6"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-2ww3-fxvq-293j"
    }
  ]
}

ghsa-2ww3-fxvq-293j

Vulnerability from github

Published

2021-09-29 17:14

Modified

2024-10-07 15:09

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

NLTK Vulnerable to REDoS

Details

The nltk package is vulnerable to ReDoS (regular expression denial of service). An attacker that is able to provide as an input to the [_read_comparison_block()(https://github.com/nltk/nltk/blob/23f4b1c4b4006b0cb3ec278e801029557cec4e82/nltk/corpus/reader/comparative_sents.py#L259) function in the file nltk/corpus/reader/comparative_sents.py may cause an application to consume an excessive amount of CPU.

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "nltk"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.6.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-3828"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333",
      "CWE-697"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-09-28T20:49:37Z",
    "nvd_published_at": "2021-09-27T13:15:00Z",
    "severity": "HIGH"
  },
  "details": "The nltk package is vulnerable to ReDoS (regular expression denial of service). An attacker that is able to provide as an input to the [`_read_comparison_block()`(https://github.com/nltk/nltk/blob/23f4b1c4b4006b0cb3ec278e801029557cec4e82/nltk/corpus/reader/comparative_sents.py#L259) function in the file `nltk/corpus/reader/comparative_sents.py` may cause an application to consume an excessive amount of CPU.",
  "id": "GHSA-2ww3-fxvq-293j",
  "modified": "2024-10-07T15:09:21Z",
  "published": "2021-09-29T17:14:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3828"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nltk/nltk/pull/2816"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nltk/nltk/commit/277711ab1dec729e626b27aab6fa35ea5efbd7e6"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-2ww3-fxvq-293j"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/nltk/nltk"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/nltk/PYSEC-2021-356.yaml"
    },
    {
      "type": "WEB",
      "url": "https://huntr.dev/bounties/d19aed43-75bc-4a03-91a0-4d0bb516bc32"
    }
  ],
  "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": "NLTK Vulnerable to REDoS"
}

cve-2021-3828

Vulnerability from cvelistv5

Published

2021-09-27 12:25

Modified

2024-08-03 17:09

Severity ?

7.5 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

nltk is vulnerable to Inefficient Regular Expression Complexity

References

▼	URL	Tags
	https://huntr.dev/bounties/d19aed43-75bc-4a03-91a0-4d0bb516bc32	x_refsource_CONFIRM
	https://github.com/nltk/nltk/commit/277711ab1dec729e626b27aab6fa35ea5efbd7e6	x_refsource_MISC

Impacted products

Vendor

Product

Version

▼

nltk

nltk/nltk

Version: unspecified <

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
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        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:09:09.516Z",
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        },
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              "x_transferred"
            ],
            "url": "https://huntr.dev/bounties/d19aed43-75bc-4a03-91a0-4d0bb516bc32"
          },
          {
            "tags": [
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            ],
            "url": "https://github.com/nltk/nltk/commit/277711ab1dec729e626b27aab6fa35ea5efbd7e6"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "nltk/nltk",
          "vendor": "nltk",
          "versions": [
            {
              "lessThanOrEqual": "3.6.3",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Srikanth Prathi (@srikanthprathi)"
        },
        {
          "lang": "en",
          "value": "Tom Aarsen (@tomaarsen)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "nltk is vulnerable to Inefficient Regular Expression Complexity"
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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          }
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      "problemTypes": [
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        },
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          "url": "https://github.com/nltk/nltk/commit/277711ab1dec729e626b27aab6fa35ea5efbd7e6"
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      ],
      "source": {
        "advisory": "d19aed43-75bc-4a03-91a0-4d0bb516bc32",
        "discovery": "EXTERNAL"
      },
      "title": "Inefficient Regular Expression Complexity in nltk/nltk",
      "x_legacyV4Record": {
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        },
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                    {
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                            "version_affected": "\u003c=",
                            "version_value": "3.6.3"
                          }
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            },
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    "datePublished": "2021-09-27T12:25:30",
    "dateReserved": "2021-09-24T00:00:00",
    "dateUpdated": "2024-08-03T17:09:09.516Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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-2021-356

Vulnerability from pysec

ghsa-2ww3-fxvq-293j

Vulnerability from github

cve-2021-3828

Vulnerability from cvelistv5

Tags

Sightings

Nomenclature