RUSTSEC-2023-0010.json

{
  "schema_version": null,
  "id": "RUSTSEC-2023-0010",
  "modified": "2023-06-13T13:10:24Z",
  "published": "2023-02-07T12:00:00Z",
  "aliases": [
    "CVE-2022-4450",
    "GHSA-v5w6-wcm8-jm4q"
  ],
  "related": [],
  "summary": "Double free after calling `PEM_read_bio_ex`",
  "details": "The function `PEM_read_bio_ex()` reads a PEM file from a BIO and parses and\ndecodes the \"name\" (e.g. \"CERTIFICATE\"), any header data and the payload data.\nIf the function succeeds then the \"name_out\", \"header\" and \"data\" arguments are\npopulated with pointers to buffers containing the relevant decoded data. The\ncaller is responsible for freeing those buffers. It is possible to construct a\nPEM file that results in 0 bytes of payload data. In this case `PEM_read_bio_ex()`\nwill return a failure code but will populate the header argument with a pointer\nto a buffer that has already been freed. If the caller also frees this buffer\nthen a double free will occur. This will most likely lead to a crash. This\ncould be exploited by an attacker who has the ability to supply malicious PEM\nfiles for parsing to achieve a denial of service attack.\n\nThe functions `PEM_read_bio()` and `PEM_read()` are simple wrappers around\n`PEM_read_bio_ex()` and therefore these functions are also directly affected.\n\nThese functions are also called indirectly by a number of other OpenSSL\nfunctions including `PEM_X509_INFO_read_bio_ex()` and\n`SSL_CTX_use_serverinfo_file()` which are also vulnerable. Some OpenSSL internal\nuses of these functions are not vulnerable because the caller does not free the\nheader argument if `PEM_read_bio_ex()` returns a failure code. These locations\ninclude the `PEM_read_bio_TYPE()` functions as well as the decoders introduced in\nOpenSSL 3.0.",
  "severity": [],
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "openssl-src",
        "purl": "pkg:cargo/openssl-src"
      },
      "ecosystem_specific": {
        "affects": {
          "arch": [],
          "os": [],
          "functions": []
        },
        "affected_functions": null
      },
      "database_specific": {
        "categories": [
          "denial-of-service"
        ],
        "cvss": null,
        "informational": null
      },
      "ranges": [
        {
          "type": "SEMVER",
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "111.25.0"
            },
            {
              "introduced": "300.0.0"
            },
            {
              "fixed": "300.0.12"
            }
          ]
        }
      ],
      "versions": []
    }
  ],
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/openssl-src"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2023-0010.html"
    },
    {
      "type": "WEB",
      "url": "https://www.openssl.org/news/secadv/20230207.txt"
    }
  ],
  "database_specific": {
    "license": "CC0-1.0"
  }
}