py3-cryptography — security advisory

{
  "id": "c24ff5a6fcfa4b540c8bdf94406c7f53edb99bfb7df78d3b78b381358096aa0e",
  "url": "https://osv.dev/vulnerability/ALPINE-CVE-2023-23931",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ALPINE-CVE-2023-23931",
    "summary": "cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. In affected versions `Cipher.update_into` would accept Python objects which implement the buffer protocol, but provide only immutable buffers. This would allow immutable objects (such as `bytes`) to be mutated, thus violating fundamental rules of Python and resulting in corrupted output. This now correctly raises an exception. This issue has been present since `update_into` was originally introduced in cryptography 1.8.",
    "evidence": "osv:ALPINE-CVE-2023-23931",
    "products": [
      {
        "name": {
          "value": "py3-cryptography",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "39.0.1-r0",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "py3-cryptography",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "39.0.1-r0",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "ALPINE-CVE-2023-23931",
      "aliases": [
        "ALPINE-CVE-2023-23931"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "1.8"
                },
                {
                  "fixed": "39.0.1-r0"
                }
              ]
            }
          ],
          "package": {
            "name": "py3-cryptography",
            "purl": "pkg:apk/alpine/py3-cryptography?arch=source",
            "ecosystem": "Alpine:v3.23"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-23931.json"
          },
          "ecosystem_specific": {}
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "1.8"
                },
                {
                  "fixed": "39.0.1-r0"
                }
              ]
            }
          ],
          "package": {
            "name": "py3-cryptography",
            "purl": "pkg:apk/alpine/py3-cryptography?arch=source",
            "ecosystem": "Alpine:v3.24"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-23931.json"
          },
          "ecosystem_specific": {}
        }
      ],
      "modified": "2026-10-26T17:17:58.610837113Z",
      "provider": "osv",
      "upstream": [
        "CVE-2023-23931"
      ],
      "references": [
        "https://security.alpinelinux.org/vuln/CVE-2023-23931"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2023-23931",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 454384,
  "published_at": "2023-02-07T21:15:09.85+00:00"
}