Vulnerability-Lookup

CVE-2023-33185 (GCVE-0-2023-33185)

Vulnerability from cvelistv5 – Published: 2023-05-26 20:03 – Updated: 2025-01-14 19:31

Title

Incorrect signature verification in django-ses

Summary

Django-SES is a drop-in mail backend for Django. The django_ses library implements a mail backend for Django using AWS Simple Email Service. The library exports the `SESEventWebhookView class` intended to receive signed requests from AWS to handle email bounces, subscriptions, etc. These requests are signed by AWS and are verified by django_ses, however the verification of this signature was found to be flawed as it allowed users to specify arbitrary public certificates. This issue was patched in version 3.5.0.

Severity

4.6 (Medium)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-01-14 19:31 UTC

CWE

CWE-347 - Improper Verification of Cryptographic Signature

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/django-ses/django-ses/security…	x_refsource_CONFIRM
https://github.com/django-ses/django-ses/commit/b…	x_refsource_MISC
https://github.com/django-ses/django-ses/blob/3d6…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
django-ses	django-ses	Affected: < 3.5.0	guessed

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2023-33185

Vulnerability from fkie_nvd - Published: 2023-05-26 21:15 - Updated: 2026-06-17 06:01

Severity

4.6 (Medium) - CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L
5.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Summary

References

URL	Tags
security-advisories@github.com	https://github.com/django-ses/django-ses/blob/3d627067935876487f9938310d5e1fbb249a7778/CVE/001-cert-url-signature-verification.md	Exploit, Third Party Advisory
security-advisories@github.com	https://github.com/django-ses/django-ses/commit/b71b5f413293a13997b6e6314086cb9c22629795	Patch
security-advisories@github.com	https://github.com/django-ses/django-ses/security/advisories/GHSA-qg36-9jxh-fj25	Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/django-ses/django-ses/blob/3d627067935876487f9938310d5e1fbb249a7778/CVE/001-cert-url-signature-verification.md	Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/django-ses/django-ses/commit/b71b5f413293a13997b6e6314086cb9c22629795	Patch
af854a3a-2127-422b-91ae-364da2661108	https://github.com/django-ses/django-ses/security/advisories/GHSA-qg36-9jxh-fj25	Vendor Advisory

Impacted products

	Vendor	Product	Version
	django-ses_project	django-ses	*

JSON

To clipboard

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          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:django-ses_project:django-ses:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B87C9D64-0546-4BC8-B456-D2EB87E34F57",
              "versionEndExcluding": "3.5.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
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    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Django-SES is a drop-in mail backend for Django. The django_ses library implements a mail backend for Django using AWS Simple Email Service. The library exports the `SESEventWebhookView class` intended to receive signed requests from AWS to handle email bounces, subscriptions, etc. These requests are signed by AWS and are verified by django_ses, however the verification of this signature was found to be flawed as it allowed users to specify arbitrary public certificates. This issue was patched in version 3.5.0."
    }
  ],
  "id": "CVE-2023-33185",
  "lastModified": "2026-06-17T06:01:15.613",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 4.6,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 3.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
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          "baseScore": 5.4,
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          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.5,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-33185",
          "options": [
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              "automatable": "no"
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            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-01-14T19:31:36.439745Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2023-05-26T21:15:20.527",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://github.com/django-ses/django-ses/blob/3d627067935876487f9938310d5e1fbb249a7778/CVE/001-cert-url-signature-verification.md"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
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      "url": "https://github.com/django-ses/django-ses/commit/b71b5f413293a13997b6e6314086cb9c22629795"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
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      ],
      "url": "https://github.com/django-ses/django-ses/security/advisories/GHSA-qg36-9jxh-fj25"
    },
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      "url": "https://github.com/django-ses/django-ses/blob/3d627067935876487f9938310d5e1fbb249a7778/CVE/001-cert-url-signature-verification.md"
    },
    {
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    },
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      "tags": [
        "Vendor Advisory"
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      "url": "https://github.com/django-ses/django-ses/security/advisories/GHSA-qg36-9jxh-fj25"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-347"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-347"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

GHSA-QG36-9JXH-FJ25

Vulnerability from github – Published: 2023-05-22 19:41 – Updated: 2024-11-18 16:26

Summary

Incorrect signature verification in django-ses

Details

The django_ses library implements a mail backend for Django using AWS Simple Email Service. The library exports the SESEventWebhookView class intended to receive signed requests from AWS to handle email bounces, subscriptions, etc. These requests are signed by AWS and are verified by django_ses, however the verification of this signature was found to be flawed as it allowed users to specify arbitrary public certificates.

Severity

4.6 (Medium)


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

2.1 (Low)


                  
                    CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "django-ses"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.5.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-33185"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-347"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-05-22T19:41:56Z",
    "nvd_published_at": "2023-05-26T21:15:20Z",
    "severity": "LOW"
  },
  "details": "The django_ses library implements a mail backend for Django using AWS Simple Email Service. The library exports the `SESEventWebhookView class` intended to receive signed requests from AWS to handle email bounces, subscriptions, etc. These requests are signed by AWS and are verified by django_ses, however the verification of this signature was found to be flawed as it allowed users to specify arbitrary public certificates.",
  "id": "GHSA-qg36-9jxh-fj25",
  "modified": "2024-11-18T16:26:29Z",
  "published": "2023-05-22T19:41:56Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/django-ses/django-ses/security/advisories/GHSA-qg36-9jxh-fj25"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-33185"
    },
    {
      "type": "WEB",
      "url": "https://github.com/django-ses/django-ses/commit/b71b5f413293a13997b6e6314086cb9c22629795"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/django-ses/django-ses"
    },
    {
      "type": "WEB",
      "url": "https://github.com/django-ses/django-ses/blob/3d627067935876487f9938310d5e1fbb249a7778/CVE/001-cert-url-signature-verification.md"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/django-ses/PYSEC-2023-82.yaml"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Incorrect signature verification in django-ses"
}

GSD-2023-33185

Vulnerability from gsd - Updated: 2023-12-13 01:20

Details

Aliases

CVE-2023-33185

Aliases

CVE-2023-33185

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2023-33185",
    "id": "GSD-2023-33185"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2023-33185"
      ],
      "details": "Django-SES is a drop-in mail backend for Django. The django_ses library implements a mail backend for Django using AWS Simple Email Service. The library exports the `SESEventWebhookView class` intended to receive signed requests from AWS to handle email bounces, subscriptions, etc. These requests are signed by AWS and are verified by django_ses, however the verification of this signature was found to be flawed as it allowed users to specify arbitrary public certificates. This issue was patched in version 3.5.0.",
      "id": "GSD-2023-33185",
      "modified": "2023-12-13T01:20:37.645304Z",
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            "CWE-937"
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          "date": "2023-06-06",
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          "package_slug": "pypi/django-ses",
          "pubdate": "2023-05-26",
          "solution": "Upgrade to version 3.5.0 or above.",
          "title": "Improper Verification of Cryptographic Signature",
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      },
      "lastModifiedDate": "2023-06-06T18:09Z",
      "publishedDate": "2023-05-26T21:15Z"
    }
  }
}

PYSEC-2023-82

Vulnerability from pysec - Published: 2023-05-26 21:15 - Updated: 2023-06-06 20:23

Details

Django-SES is a drop-in mail backend for Django. The django_ses library implements a mail backend for Django using AWS Simple Email Service. The library exports the SESEventWebhookView class intended to receive signed requests from AWS to handle email bounces, subscriptions, etc. These requests are signed by AWS and are verified by django_ses, however the verification of this signature was found to be flawed as it allowed users to specify arbitrary public certificates. This issue was patched in version 3.5.0.

Impacted products

Name	purl
django-ses	pkg:pypi/django-ses

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "django-ses",
        "purl": "pkg:pypi/django-ses"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "b71b5f413293a13997b6e6314086cb9c22629795"
            }
          ],
          "repo": "https://github.com/django-ses/django-ses",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.5.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.1",
        "0.2",
        "0.3.0",
        "0.4.0",
        "0.4.1",
        "0.6.0",
        "0.7.0",
        "0.7.1",
        "0.8.0",
        "0.8.1",
        "0.8.10",
        "0.8.11",
        "0.8.12",
        "0.8.13",
        "0.8.14",
        "0.8.2",
        "0.8.3",
        "0.8.3.1",
        "0.8.4",
        "0.8.5",
        "0.8.6",
        "0.8.7",
        "0.8.8",
        "0.8.9",
        "1.0.0",
        "1.0.1",
        "1.0.2",
        "1.0.3",
        "2.0.0",
        "2.1.0",
        "2.1.1",
        "2.2.0",
        "2.2.1",
        "2.2.2",
        "2.3.0",
        "2.3.1",
        "2.4.0",
        "2.5.0",
        "2.6.0",
        "2.6.1",
        "3.0.0",
        "3.0.1",
        "3.1.0",
        "3.1.2",
        "3.2.0",
        "3.2.1",
        "3.2.2",
        "3.3.0",
        "3.4.0",
        "3.4.1"
      ]
    }
  ],
  "aliases": [
    "CVE-2023-33185",
    "GHSA-qg36-9jxh-fj25"
  ],
  "details": "Django-SES is a drop-in mail backend for Django. The django_ses library implements a mail backend for Django using AWS Simple Email Service. The library exports the `SESEventWebhookView class` intended to receive signed requests from AWS to handle email bounces, subscriptions, etc. These requests are signed by AWS and are verified by django_ses, however the verification of this signature was found to be flawed as it allowed users to specify arbitrary public certificates. This issue was patched in version 3.5.0.",
  "id": "PYSEC-2023-82",
  "modified": "2023-06-06T20:23:42.892470Z",
  "published": "2023-05-26T21:15:00Z",
  "references": [
    {
      "type": "EVIDENCE",
      "url": "https://github.com/django-ses/django-ses/blob/3d627067935876487f9938310d5e1fbb249a7778/CVE/001-cert-url-signature-verification.md"
    },
    {
      "type": "WEB",
      "url": "https://github.com/django-ses/django-ses/blob/3d627067935876487f9938310d5e1fbb249a7778/CVE/001-cert-url-signature-verification.md"
    },
    {
      "type": "FIX",
      "url": "https://github.com/django-ses/django-ses/commit/b71b5f413293a13997b6e6314086cb9c22629795"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/django-ses/django-ses/security/advisories/GHSA-qg36-9jxh-fj25"
    }
  ]
}

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.

Action not permitted

CVE-2023-33185 (GCVE-0-2023-33185)

FKIE_CVE-2023-33185

GHSA-QG36-9JXH-FJ25

GSD-2023-33185

PYSEC-2023-82

Tags

Sightings

Nomenclature

Related by attack behaviour