Vulnerability-Lookup

UBUNTU-CVE-2023-38037 (CVE-2023-38037)

Vulnerability from osv_ubuntu – Published: 2025-01-09 01:15 – Updated: 2026-05-20 15:02 – Source website

Details

ActiveSupport::EncryptedFile writes contents that will be encrypted to a temporary file. The temporary file's permissions are defaulted to the user's current umask settings, meaning that it's possible for other users on the same system to read the contents of the temporary file. Attackers that have access to the file system could possibly read the contents of this temporary file while a user is editing it. All users running an affected release should either upgrade or use one of the workarounds immediately.

Severity

5.5 (Medium)


                    
                      CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:L/A:L

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2023-38037	REPORT
	https://github.com/advisories/GHSA-cr5q-6q9f-rq6q	REPORT
	https://github.com/rubysec/ruby-advisory-db/blob/…	REPORT
	https://github.com/rails/rails/commit/a21d6edf35a…	REPORT
	https://github.com/rails/rails/commit/c85cc667ebf…	REPORT
	https://www.cve.org/CVERecord?id=CVE-2023-38037	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "rails",
            "binary_version": "2:4.2.6-1ubuntu0.1~esm2"
          },
          {
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          },
          {
            "binary_name": "ruby-actionpack",
            "binary_version": "2:4.2.6-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "ruby-actionview",
            "binary_version": "2:4.2.6-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "ruby-activejob",
            "binary_version": "2:4.2.6-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "ruby-activemodel",
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          {
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          {
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          {
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      },
      "package": {
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        "name": "rails",
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      },
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          {
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            "binary_version": "2:5.2.3+dfsg-3ubuntu0.1~esm1"
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      "package": {
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    {
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          {
            "binary_name": "ruby-activemodel",
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          {
            "binary_name": "ruby-activerecord",
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          {
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            "binary_name": "ruby-activesupport",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
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          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "rails",
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          },
          {
            "binary_name": "ruby-actiontext",
            "binary_version": "2:6.1.7.3+dfsg-3"
          },
          {
            "binary_name": "ruby-actionview",
            "binary_version": "2:6.1.7.3+dfsg-3"
          },
          {
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            "binary_version": "2:6.1.7.3+dfsg-3"
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          {
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            "binary_version": "2:6.1.7.3+dfsg-3"
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            "binary_name": "ruby-activerecord",
            "binary_version": "2:6.1.7.3+dfsg-3"
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          {
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            "binary_version": "2:6.1.7.3+dfsg-3"
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          {
            "binary_name": "ruby-activesupport",
            "binary_version": "2:6.1.7.3+dfsg-3"
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        "name": "rails",
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    {
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            "binary_version": "2:7.2.2.1+dfsg-7"
          },
          {
            "binary_name": "ruby-activemodel",
            "binary_version": "2:7.2.2.1+dfsg-7"
          },
          {
            "binary_name": "ruby-activerecord",
            "binary_version": "2:7.2.2.1+dfsg-7"
          },
          {
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            "binary_version": "2:7.2.2.1+dfsg-7"
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      "package": {
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        "name": "rails",
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        "2:7.2.2.1+dfsg-7"
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          {
            "binary_name": "ruby-actioncable",
            "binary_version": "2:7.2.3+dfsg-2"
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          {
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            "binary_version": "2:7.2.3+dfsg-2"
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          },
          {
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            "binary_version": "2:7.2.3+dfsg-2"
          },
          {
            "binary_name": "ruby-actionview",
            "binary_version": "2:7.2.3+dfsg-2"
          },
          {
            "binary_name": "ruby-activejob",
            "binary_version": "2:7.2.3+dfsg-2"
          },
          {
            "binary_name": "ruby-activemodel",
            "binary_version": "2:7.2.3+dfsg-2"
          },
          {
            "binary_name": "ruby-activerecord",
            "binary_version": "2:7.2.3+dfsg-2"
          },
          {
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            "binary_version": "2:7.2.3+dfsg-2"
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          {
            "binary_name": "ruby-rails",
            "binary_version": "2:7.2.3+dfsg-2"
          },
          {
            "binary_name": "ruby-railties",
            "binary_version": "2:7.2.3+dfsg-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "rails",
        "purl": "pkg:deb/ubuntu/rails@2:7.2.3+dfsg-2?arch=source\u0026distro=resolute"
      },
      "ranges": [
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            }
          ],
          "type": "ECOSYSTEM"
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      ],
      "versions": [
        "2:7.2.2.1+dfsg-7",
        "2:7.2.2.2+dfsg-2",
        "2:7.2.3+dfsg-2"
      ]
    }
  ],
  "aliases": [],
  "details": "ActiveSupport::EncryptedFile writes contents that will be encrypted to a temporary file.  The temporary file\u0027s permissions are defaulted to the user\u0027s current `umask` settings, meaning that it\u0027s possible for other users on the same system to read the contents of the temporary file. Attackers that have access to the file system could possibly read the contents of this temporary file while a user is editing it. All users running an affected release should either upgrade or use one of the workarounds immediately.",
  "id": "UBUNTU-CVE-2023-38037",
  "modified": "2026-05-20T15:02:46Z",
  "published": "2025-01-09T01:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-38037"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/advisories/GHSA-cr5q-6q9f-rq6q"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/activesupport/CVE-2023-38037.yml"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/rails/rails/commit/a21d6edf35a60383dfa6c4da49e4b1aef5f00731"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/rails/rails/commit/c85cc667ebfd3c270df37c7575d580ea6462e12f"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-38037"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2023-38037"
  ]
}

CVE-2023-38037 (GCVE-0-2023-38037)

Vulnerability from cvelistv5 – Published: 2025-01-09 00:33 – Updated: 2025-02-15 00:10

Summary

ActiveSupport::EncryptedFile writes contents that will be encrypted to a temporary file. The temporary file's permissions are defaulted to the user's current `umask` settings, meaning that it's possible for other users on the same system to read the contents of the temporary file. Attackers that have access to the file system could possibly read the contents of this temporary file while a user is editing it. All users running an affected release should either upgrade or use one of the workarounds immediately.

Severity

5.5 (Medium)


                        
                          CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:L/A:L

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-01-09 21:35 UTC

CWE

CWE-732 - Incorrect Permission Assignment for Critical Resource

Assigner

hackerone CNA under the mitre root

CNA scorecard D 59/100 over 187 records in the last 180 days details

References

2 references

URL	Tags
https://discuss.rubyonrails.org/t/cve-2023-38037-…
https://security.netapp.com/advisory/ntap-2025021…

Impacted products

1 product

Vendor	Product	Version
Rails	ActiveSupport	Affected: >= 5.2.0 , < >= 5.2.0 (custom) Unaffected: 5.2.0 , < 5.2.0 (semver) Unaffected: 7.0.7.1, 6.1.7.5 , < 7.0.7.1, 6.1.7.5 (custom)

Show details on NVD website

JSON

To clipboard

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      {
        "providerMetadata": {
          "dateUpdated": "2025-02-15T00:10:27.790Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://security.netapp.com/advisory/ntap-20250214-0010/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "ActiveSupport",
          "vendor": "Rails",
          "versions": [
            {
              "lessThan": "\u003e= 5.2.0",
              "status": "affected",
              "version": "\u003e= 5.2.0",
              "versionType": "custom"
            },
            {
              "lessThan": "5.2.0",
              "status": "unaffected",
              "version": "5.2.0",
              "versionType": "semver"
            },
            {
              "lessThan": "7.0.7.1, 6.1.7.5",
              "status": "unaffected",
              "version": "7.0.7.1, 6.1.7.5",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "ActiveSupport::EncryptedFile writes contents that will be encrypted to a\r\ntemporary file.  The temporary file\u0027s permissions are defaulted to the user\u0027s\r\ncurrent `umask` settings, meaning that it\u0027s possible for other users on the\r\nsame system to read the contents of the temporary file.\r\n\r\nAttackers that have access to the file system could possibly read the contents\r\nof this temporary file while a user is editing it.\r\n\r\nAll users running an affected release should either upgrade or use one of the\r\nworkarounds immediately."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:L/A:L",
            "version": "3.0"
          }
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-01-09T00:33:47.704Z",
        "orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
        "shortName": "hackerone"
      },
      "references": [
        {
          "url": "https://discuss.rubyonrails.org/t/cve-2023-38037-possible-file-disclosure-of-locally-encrypted-files/83544"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
    "assignerShortName": "hackerone",
    "cveId": "CVE-2023-38037",
    "datePublished": "2025-01-09T00:33:47.704Z",
    "dateReserved": "2023-07-12T01:00:11.881Z",
    "dateUpdated": "2025-02-15T00:10:27.790Z",
    "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.

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.

Action not permitted

UBUNTU-CVE-2023-38037 (CVE-2023-38037)

CVE-2023-38037 (GCVE-0-2023-38037)

Tags

Sightings

Nomenclature

Related by attack behaviour