Vulnerability-Lookup

OESA-2023-1887 (CVE-2023-49083)

Vulnerability from osv_openeuler – Published: 2023-12-08 11:06 – Updated: 2026-08-06 11:06 – Source website

Summary

python-cryptography security update

Details

cryptography is a package designed to expose cryptographic primitives and recipes to Python developers.

Security Fix(es):

cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Calling load_pem_pkcs7_certificates or load_der_pkcs7_certificates could lead to a NULL-pointer dereference and segfault. Exploitation of this vulnerability poses a serious risk of Denial of Service (DoS) for any application attempting to deserialize a PKCS7 blob/certificate. The consequences extend to potential disruptions in system availability and stability. This vulnerability has been patched in version 41.0.6.(CVE-2023-49083)

Severity

9.1 (Critical)


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

References

URL

Type

	https://www.openeuler.org/en/security/safety-bull…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2023-49083	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "python-cryptography-debugsource-3.3.1-5.oe1.aarch64.rpm",
          "python2-cryptography-3.3.1-5.oe1.aarch64.rpm",
          "python-cryptography-debuginfo-3.3.1-5.oe1.aarch64.rpm",
          "python3-cryptography-3.3.1-5.oe1.aarch64.rpm"
        ],
        "noarch": [
          "python-cryptography-help-3.3.1-5.oe1.noarch.rpm"
        ],
        "src": [
          "python-cryptography-3.3.1-5.oe1.src.rpm"
        ],
        "x86_64": [
          "python2-cryptography-3.3.1-5.oe1.x86_64.rpm",
          "python-cryptography-debuginfo-3.3.1-5.oe1.x86_64.rpm",
          "python-cryptography-debugsource-3.3.1-5.oe1.x86_64.rpm",
          "python3-cryptography-3.3.1-5.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP1",
        "name": "python-cryptography",
        "purl": "pkg:rpm/openEuler/python-cryptography\u0026distro=openEuler-20.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.3.1-5.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "python3-cryptography-3.3.1-5.oe1.aarch64.rpm",
          "python-cryptography-debugsource-3.3.1-5.oe1.aarch64.rpm",
          "python-cryptography-debuginfo-3.3.1-5.oe1.aarch64.rpm",
          "python2-cryptography-3.3.1-5.oe1.aarch64.rpm"
        ],
        "noarch": [
          "python-cryptography-help-3.3.1-5.oe1.noarch.rpm"
        ],
        "src": [
          "python-cryptography-3.3.1-5.oe1.src.rpm"
        ],
        "x86_64": [
          "python2-cryptography-3.3.1-5.oe1.x86_64.rpm",
          "python3-cryptography-3.3.1-5.oe1.x86_64.rpm",
          "python-cryptography-debugsource-3.3.1-5.oe1.x86_64.rpm",
          "python-cryptography-debuginfo-3.3.1-5.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP3",
        "name": "python-cryptography",
        "purl": "pkg:rpm/openEuler/python-cryptography\u0026distro=openEuler-20.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.3.1-5.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "python-cryptography-debugsource-3.3.1-7.oe2203.aarch64.rpm",
          "python3-cryptography-3.3.1-7.oe2203.aarch64.rpm",
          "python-cryptography-debuginfo-3.3.1-7.oe2203.aarch64.rpm",
          "python3-cryptography-36.0.1-6.oe2203sp1.aarch64.rpm",
          "python-cryptography-debuginfo-36.0.1-6.oe2203sp1.aarch64.rpm",
          "python-cryptography-debugsource-36.0.1-6.oe2203sp1.aarch64.rpm",
          "python-cryptography-debuginfo-36.0.1-5.oe2203sp2.aarch64.rpm",
          "python3-cryptography-36.0.1-5.oe2203sp2.aarch64.rpm",
          "python-cryptography-debugsource-36.0.1-5.oe2203sp2.aarch64.rpm"
        ],
        "noarch": [
          "python-cryptography-help-3.3.1-7.oe2203.noarch.rpm",
          "python-cryptography-help-36.0.1-6.oe2203sp1.noarch.rpm",
          "python-cryptography-help-36.0.1-5.oe2203sp2.noarch.rpm"
        ],
        "src": [
          "python-cryptography-3.3.1-7.oe2203.src.rpm",
          "python-cryptography-36.0.1-6.oe2203sp1.src.rpm",
          "python-cryptography-36.0.1-5.oe2203sp2.src.rpm"
        ],
        "x86_64": [
          "python-cryptography-debugsource-3.3.1-7.oe2203.x86_64.rpm",
          "python3-cryptography-3.3.1-7.oe2203.x86_64.rpm",
          "python-cryptography-debuginfo-3.3.1-7.oe2203.x86_64.rpm",
          "python-cryptography-debuginfo-36.0.1-6.oe2203sp1.x86_64.rpm",
          "python-cryptography-debugsource-36.0.1-6.oe2203sp1.x86_64.rpm",
          "python3-cryptography-36.0.1-6.oe2203sp1.x86_64.rpm",
          "python-cryptography-debuginfo-36.0.1-5.oe2203sp2.x86_64.rpm",
          "python3-cryptography-36.0.1-5.oe2203sp2.x86_64.rpm",
          "python-cryptography-debugsource-36.0.1-5.oe2203sp2.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS",
        "name": "python-cryptography",
        "purl": "pkg:rpm/openEuler/python-cryptography\u0026distro=openEuler-22.03-LTS"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "36.0.1-5.oe2203sp2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "python3-cryptography-36.0.1-6.oe2203sp1.aarch64.rpm",
          "python-cryptography-debuginfo-36.0.1-6.oe2203sp1.aarch64.rpm",
          "python-cryptography-debugsource-36.0.1-6.oe2203sp1.aarch64.rpm"
        ],
        "noarch": [
          "python-cryptography-help-36.0.1-6.oe2203sp1.noarch.rpm"
        ],
        "src": [
          "python-cryptography-36.0.1-6.oe2203sp1.src.rpm"
        ],
        "x86_64": [
          "python-cryptography-debuginfo-36.0.1-6.oe2203sp1.x86_64.rpm",
          "python-cryptography-debugsource-36.0.1-6.oe2203sp1.x86_64.rpm",
          "python3-cryptography-36.0.1-6.oe2203sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP1",
        "name": "python-cryptography",
        "purl": "pkg:rpm/openEuler/python-cryptography\u0026distro=openEuler-22.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "36.0.1-6.oe2203sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "python-cryptography-debuginfo-36.0.1-5.oe2203sp2.aarch64.rpm",
          "python3-cryptography-36.0.1-5.oe2203sp2.aarch64.rpm",
          "python-cryptography-debugsource-36.0.1-5.oe2203sp2.aarch64.rpm"
        ],
        "noarch": [
          "python-cryptography-help-36.0.1-5.oe2203sp2.noarch.rpm"
        ],
        "src": [
          "python-cryptography-36.0.1-5.oe2203sp2.src.rpm"
        ],
        "x86_64": [
          "python-cryptography-debuginfo-36.0.1-5.oe2203sp2.x86_64.rpm",
          "python3-cryptography-36.0.1-5.oe2203sp2.x86_64.rpm",
          "python-cryptography-debugsource-36.0.1-5.oe2203sp2.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP2",
        "name": "python-cryptography",
        "purl": "pkg:rpm/openEuler/python-cryptography\u0026distro=openEuler-22.03-LTS-SP2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "36.0.1-5.oe2203sp2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Critical"
  },
  "details": "cryptography is a package designed to expose cryptographic primitives and recipes to Python developers.\r\n\r\nSecurity Fix(es):\r\n\r\ncryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Calling `load_pem_pkcs7_certificates` or `load_der_pkcs7_certificates` could lead to a NULL-pointer dereference and segfault. Exploitation of this vulnerability poses a serious risk of Denial of Service (DoS) for any application attempting to deserialize a PKCS7 blob/certificate. The consequences extend to potential disruptions in system availability and stability. This vulnerability has been patched in version 41.0.6.(CVE-2023-49083)",
  "id": "OESA-2023-1887",
  "modified": "2026-08-06T11:06:20Z",
  "published": "2023-12-08T11:06:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1887"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-49083"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "python-cryptography security update",
  "upstream": [
    "CVE-2023-49083"
  ]
}

CVE-2023-49083 (GCVE-0-2023-49083)

Vulnerability from cvelistv5 – Published: 2023-11-29 18:50 – Updated: 2025-12-18 15:32

Title

cryptography vulnerable to NULL-dereference when loading PKCS7 certificates

Summary

cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Calling `load_pem_pkcs7_certificates` or `load_der_pkcs7_certificates` could lead to a NULL-pointer dereference and segfault. Exploitation of this vulnerability poses a serious risk of Denial of Service (DoS) for any application attempting to deserialize a PKCS7 blob/certificate. The consequences extend to potential disruptions in system availability and stability. This vulnerability has been patched in version 41.0.6.

Severity

5.9 (Medium)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-12-18 15:31 UTC

CWE

CWE-476 - NULL Pointer Dereference

Assigner

GitHub_M mitre root

References

5 references

URL	Tags
https://github.com/pyca/cryptography/security/adv…	x_refsource_CONFIRM
https://github.com/pyca/cryptography/pull/9926	x_refsource_MISC
https://github.com/pyca/cryptography/commit/f09c2…	x_refsource_MISC
https://lists.fedoraproject.org/archives/list/pac…
https://lists.debian.org/debian-lts-announce/2024…

Impacted products

1 product

Vendor	Product	Version
pyca	cryptography	Affected: >= 3.1, < 41.0.6

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T21:50:11.841Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://github.com/pyca/cryptography/security/advisories/GHSA-jfhm-5ghh-2f97",
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/pyca/cryptography/security/advisories/GHSA-jfhm-5ghh-2f97"
          },
          {
            "name": "https://github.com/pyca/cryptography/pull/9926",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/pyca/cryptography/pull/9926"
          },
          {
            "name": "https://github.com/pyca/cryptography/commit/f09c261ca10a31fe41b1262306db7f8f1da0e48a",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/pyca/cryptography/commit/f09c261ca10a31fe41b1262306db7f8f1da0e48a"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QMNTYMUGFJSDBYBU22FUYBHFRZODRKXV/"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2024/10/msg00012.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-49083",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-12-18T15:31:36.864359Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-12-18T15:32:14.214Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "cryptography",
          "vendor": "pyca",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 3.1, \u003c 41.0.6"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Calling `load_pem_pkcs7_certificates` or `load_der_pkcs7_certificates` could lead to a NULL-pointer dereference and segfault. Exploitation of this vulnerability poses a serious risk of Denial of Service (DoS) for any application attempting to deserialize a PKCS7 blob/certificate. The consequences extend to potential disruptions in system availability and stability. This vulnerability has been patched in version 41.0.6."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-476",
              "description": "CWE-476: NULL Pointer Dereference",
              "lang": "en",
              "type": "CWE"
            }
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      "providerMetadata": {
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        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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      },
      "references": [
        {
          "name": "https://github.com/pyca/cryptography/security/advisories/GHSA-jfhm-5ghh-2f97",
          "tags": [
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          ],
          "url": "https://github.com/pyca/cryptography/security/advisories/GHSA-jfhm-5ghh-2f97"
        },
        {
          "name": "https://github.com/pyca/cryptography/pull/9926",
          "tags": [
            "x_refsource_MISC"
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          "url": "https://github.com/pyca/cryptography/pull/9926"
        },
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          "name": "https://github.com/pyca/cryptography/commit/f09c261ca10a31fe41b1262306db7f8f1da0e48a",
          "tags": [
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          "url": "https://github.com/pyca/cryptography/commit/f09c261ca10a31fe41b1262306db7f8f1da0e48a"
        },
        {
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      "source": {
        "advisory": "GHSA-jfhm-5ghh-2f97",
        "discovery": "UNKNOWN"
      },
      "title": "cryptography vulnerable to NULL-dereference when loading PKCS7 certificates"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2023-49083",
    "datePublished": "2023-11-29T18:50:24.263Z",
    "dateReserved": "2023-11-21T18:57:30.428Z",
    "dateUpdated": "2025-12-18T15:32:14.214Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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

OESA-2023-1887 (CVE-2023-49083)

CVE-2023-49083 (GCVE-0-2023-49083)

Tags

Sightings

Nomenclature

Related by attack behaviour