Vulnerability-Lookup

GSD-2021-4238

Vulnerability from gsd - Updated: 2023-12-13 01:23

Details

Randomly-generated alphanumeric strings contain significantly less entropy than expected. The RandomAlphaNumeric and CryptoRandomAlphaNumeric functions always return strings containing at least one digit from 0 to 9. This significantly reduces the amount of entropy in short strings generated by these functions.

Aliases

CVE-2021-4238

Aliases

CVE-2021-4238

JSON

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{
  "GSD": {
    "alias": "CVE-2021-4238",
    "id": "GSD-2021-4238",
    "references": [
      "https://www.suse.com/security/cve/CVE-2021-4238.html",
      "https://access.redhat.com/errata/RHSA-2023:0449",
      "https://access.redhat.com/errata/RHSA-2023:0540",
      "https://access.redhat.com/errata/RHSA-2023:0542",
      "https://access.redhat.com/errata/RHSA-2023:0561",
      "https://access.redhat.com/errata/RHSA-2023:0565",
      "https://access.redhat.com/errata/RHSA-2023:0569",
      "https://access.redhat.com/errata/RHSA-2023:0574",
      "https://access.redhat.com/errata/RHSA-2023:0651",
      "https://access.redhat.com/errata/RHSA-2023:0728",
      "https://access.redhat.com/errata/RHSA-2023:0770",
      "https://access.redhat.com/errata/RHSA-2023:0774",
      "https://access.redhat.com/errata/RHSA-2023:0802",
      "https://access.redhat.com/errata/RHSA-2023:0803",
      "https://access.redhat.com/errata/RHSA-2023:0804",
      "https://access.redhat.com/errata/RHSA-2023:0899",
      "https://access.redhat.com/errata/RHSA-2023:1159",
      "https://access.redhat.com/errata/RHSA-2023:1170"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-4238"
      ],
      "details": "Randomly-generated alphanumeric strings contain significantly less entropy than expected. The RandomAlphaNumeric and CryptoRandomAlphaNumeric functions always return strings containing at least one digit from 0 to 9. This significantly reduces the amount of entropy in short strings generated by these functions.",
      "id": "GSD-2021-4238",
      "modified": "2023-12-13T01:23:11.666872Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
        "ASSIGNER": "security@golang.org",
        "ID": "CVE-2021-4238",
        "STATE": "PUBLIC"
      },
      "affects": {
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          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "github.com/Masterminds/goutils",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "0",
                          "version_value": "1.1.1"
                        }
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                    }
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                ]
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              "vendor_name": "github.com/Masterminds/goutils"
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          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE 330: Use of Insufficiently Random Values"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/Masterminds/goutils/commit/869801f20f9f1e7ecdbdb6422049d8241270d5e1",
            "refsource": "MISC",
            "url": "https://github.com/Masterminds/goutils/commit/869801f20f9f1e7ecdbdb6422049d8241270d5e1"
          },
          {
            "name": "https://pkg.go.dev/vuln/GO-2022-0411",
            "refsource": "MISC",
            "url": "https://pkg.go.dev/vuln/GO-2022-0411"
          }
        ]
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003cv1.1.1",
          "affected_versions": "All versions before 1.1.1",
          "cwe_ids": [
            "CWE-1035",
            "CWE-937"
          ],
          "date": "2022-12-30",
          "description": "Randomly-generated alphanumeric strings contain significantly less entropy than expected. The RandomAlphaNumeric and CryptoRandomAlphaNumeric functions always return strings containing at least one digit from 0 to 9. This significantly reduces the amount of entropy in short strings generated by these functions.",
          "fixed_versions": [
            "v1.1.1"
          ],
          "identifier": "CVE-2021-4238",
          "identifiers": [
            "GHSA-3839-6r69-m497",
            "CVE-2021-4238"
          ],
          "not_impacted": "All versions starting from 1.1.1",
          "package_slug": "go/github.com/Masterminds/goutils",
          "pubdate": "2022-12-28",
          "solution": "Upgrade to version 1.1.1 or above.",
          "title": "GoUtils\u0027s randomly-generated alphanumeric strings contain significantly less entropy than expected",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-4238",
            "https://github.com/Masterminds/goutils/commit/869801f20f9f1e7ecdbdb6422049d8241270d5e1",
            "https://pkg.go.dev/vuln/GO-2022-0411",
            "https://github.com/advisories/GHSA-3839-6r69-m497"
          ],
          "uuid": "dcabb26f-2d1a-4cfa-88d8-dd1176ba307f",
          "versions": [
            {
              "commit": {
                "sha": "f1923532a168b8203bfe956d8cd3b17ebece5982",
                "tags": [
                  "v1.1.1"
                ],
                "timestamp": "20210204200653"
              },
              "number": "v1.1.1"
            }
          ]
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:goutils_project:goutils:*:*:*:*:*:go:*:*",
                "cpe_name": [],
                "versionEndExcluding": "1.1.1",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "security@golang.org",
          "ID": "CVE-2021-4238"
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        "data_type": "CVE",
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        "description": {
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            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
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                  "lang": "en",
                  "value": "CWE-331"
                }
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        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/Masterminds/goutils/commit/869801f20f9f1e7ecdbdb6422049d8241270d5e1",
              "refsource": "MISC",
              "tags": [
                "Patch",
                "Third Party Advisory"
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              "url": "https://github.com/Masterminds/goutils/commit/869801f20f9f1e7ecdbdb6422049d8241270d5e1"
            },
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              "url": "https://pkg.go.dev/vuln/GO-2022-0411"
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      },
      "impact": {
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 5.2
        }
      },
      "lastModifiedDate": "2023-01-05T04:43Z",
      "publishedDate": "2022-12-27T22:15Z"
    }
  }
}

CVE-2021-4238 (GCVE-0-2021-4238)

Vulnerability from cvelistv5 – Published: 2022-12-27 21:13 – Updated: 2025-04-11 16:17

Title

Insufficient randomness in github.com/Masterminds/goutils

Summary

Severity

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-11 16:17 UTC

CWE

CWE 330: Use of Insufficiently Random Values

Assigner

Go Google root

References

2 references

URL	Tags
https://github.com/Masterminds/goutils/commit/869…
https://pkg.go.dev/vuln/GO-2022-0411

Impacted products

1 product

Vendor	Product	Version
github.com/Masterminds/goutils	github.com/Masterminds/goutils	Affected: 0 , < 1.1.1 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:23:10.165Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/Masterminds/goutils/commit/869801f20f9f1e7ecdbdb6422049d8241270d5e1"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://pkg.go.dev/vuln/GO-2022-0411"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 9.1,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2021-4238",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-11T16:17:07.316383Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-11T16:17:46.299Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "github.com/Masterminds/goutils",
          "product": "github.com/Masterminds/goutils",
          "programRoutines": [
            {
              "name": "RandomAlphaNumeric"
            },
            {
              "name": "CryptoRandomAlphaNumeric"
            }
          ],
          "vendor": "github.com/Masterminds/goutils",
          "versions": [
            {
              "lessThan": "1.1.1",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Randomly-generated alphanumeric strings contain significantly less entropy than expected. The RandomAlphaNumeric and CryptoRandomAlphaNumeric functions always return strings containing at least one digit from 0 to 9. This significantly reduces the amount of entropy in short strings generated by these functions."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE 330: Use of Insufficiently Random Values",
              "lang": "en"
            }
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      ],
      "providerMetadata": {
        "dateUpdated": "2023-06-12T19:04:16.468Z",
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
        "shortName": "Go"
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        {
          "url": "https://github.com/Masterminds/goutils/commit/869801f20f9f1e7ecdbdb6422049d8241270d5e1"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2022-0411"
        }
      ],
      "title": "Insufficient randomness in github.com/Masterminds/goutils"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
    "assignerShortName": "Go",
    "cveId": "CVE-2021-4238",
    "datePublished": "2022-12-27T21:13:50.373Z",
    "dateReserved": "2022-07-29T19:56:49.058Z",
    "dateUpdated": "2025-04-11T16:17:46.299Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.