RUSTSEC-2022-0030 (CVE-2022-31099)

Vulnerability from osv_rustsec – Published: 2022-05-21 12:00 – Updated: 2026-10-12 17:47 – Source website
VLAI
Summary
Stack overflow during recursive expression parsing
Details

When parsing untrusted rulex expressions, the stack may overflow, possibly enabling a Denial of Service attack. This happens when parsing an expression with several hundred levels of nesting, causing the process to abort immediately.

The flaw was corrected in commits 60aa2dc03a by adding a check to recursion depth.

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "denial-of-service"
        ],
        "cvss": null,
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "rulex",
        "purl": "pkg:cargo/rulex"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "0.4.3"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "CVE-2022-31099",
    "GHSA-v78m-2q7v-fjqp"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "When parsing untrusted rulex expressions, the stack may overflow, possibly\nenabling a Denial of Service attack. This happens when parsing an expression\nwith several hundred levels of nesting, causing the process to abort\nimmediately.\n\nThe flaw was corrected in commits `60aa2dc03a` by adding a check to recursion\ndepth.",
  "id": "RUSTSEC-2022-0030",
  "modified": "2026-10-12T17:47:59Z",
  "published": "2022-05-21T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/rulex"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2022-0030.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rulex-rs/rulex/commit/60aa2dc03a22d69c8800fec81f99c96958a11363"
    }
  ],
  "related": [],
  "severity": [],
  "summary": "Stack overflow during recursive expression parsing"
}



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