rustsec-2022-0004
Vulnerability from osv_rustsec
Published
2022-01-01 12:00
Modified
2023-06-13 13:10
Summary
Stack overflow in rustc_serialize when parsing deeply nested JSON
Details

When parsing JSON using json::Json::from_str, there is no limit to the depth of the stack, therefore deeply nested objects can cause a stack overflow, which aborts the process.

Example code that triggers the vulnerability is

fn main() {
    let _ = rustc_serialize::json::Json::from_str(&"[0,[".repeat(10000));
}

serde is recommended as a replacement to rustc_serialize.

To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "denial-of-service"
        ],
        "cvss": null,
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [
            "rustc_serialize::json::Json::from_str"
          ],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "rustc-serialize",
        "purl": "pkg:cargo/rustc-serialize"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "GHSA-2226-4v3c-cff8"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "When parsing JSON using `json::Json::from_str`, there is no limit to the depth of the stack, therefore deeply nested objects can cause a stack overflow, which aborts the process.\n\nExample code that triggers the vulnerability is\n\n```rust\nfn main() {\n    let _ = rustc_serialize::json::Json::from_str(\u0026\"[0,[\".repeat(10000));\n}\n```\n\n[serde](https://crates.io/crates/serde) is recommended as a replacement to rustc_serialize.",
  "id": "RUSTSEC-2022-0004",
  "modified": "2023-06-13T13:10:24Z",
  "published": "2022-01-01T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/rustc-serialize"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2022-0004.html"
    }
  ],
  "related": [],
  "severity": [],
  "summary": "Stack overflow in rustc_serialize when parsing deeply nested JSON"
}


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Detection rules are retrieved from Rulezet.