CVE-2025-67509: Neuron core/neuron ai Remote Code Execution Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-j8g6-5gqc-mq36",
  "modified" : "2025-12-11T15:49:01Z",
  "published" : "2025-12-09T17:19:23Z",
  "aliases" : [ "CVE-2025-67509" ],
  "summary" : "Neuron MySQLSelectTool “read-only” bypass via `SELECT ... INTO OUTFILE` (file write → potential RCE)",
  "details" : "### Impact\n\n`MySQLSelectTool` is intended to be a read-only SQL tool (e.g., for LLM agent querying). However, validation based on the first keyword (e.g., `SELECT`) and a forbidden-keyword list does not block file-writing constructs such as `INTO OUTFILE` / `INTO DUMPFILE`.  \n\nAs a result, an attacker who can influence the tool input (e.g., prompt injection through a public agent endpoint) may be able to write arbitrary content to files on the DB server.\n\nIf the MySQL/MariaDB account has the `FILE` privilege and server configuration permits writes to a useful location (e.g., a web-accessible directory), the impact can escalate to remote code execution on the application host (for example, by writing a PHP web shell).\n\n**Who is impacted:** Deployments that expose an agent using `MySQLSelectTool` to untrusted input and run with overly-permissive DB privileges/configuration.\n\n### Patches\n\n**Not patched in:** 2.8.11  \n\n**Fixed in:** 2.8.12\n\nRecommended fix direction:\n\n- Explicitly reject queries containing: `INTO`, `OUTFILE`, `DUMPFILE`, `LOAD_FILE`, and other file/IO-related functions/clauses.\n\n- Prefer AST-based validation (SQL parser) over keyword checks.\n\n- Constrain allowed tables/columns and disallow multi-statements.\n\n### Workarounds\n\nIf you cannot upgrade immediately:\n\n- Remove/disable `MySQLSelectTool` for any agent reachable from untrusted input.\n\n- Ensure DB account used by the tool **does not** have `FILE` privilege.\n\n- Ensure `secure_file_priv` is set to a directory that is **not** web-accessible (or restrict it tightly).\n\n- Add a defensive query filter at the application layer rejecting `INTO OUTFILE`, `INTO DUMPFILE`, `LOAD_FILE`, `;` (multi-statements), and suspicious comment patterns.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "neuron-core/neuron-ai"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.8.12"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 2.8.11"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/neuron-core/neuron-ai/security/advisories/GHSA-j8g6-5gqc-mq36"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-67509"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/neuron-core/neuron-ai/commit/72735d0ea133266cf2f5d5d195d41e9dd865289a"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/neuron-core/neuron-ai"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/neuron-core/neuron-ai/releases/tag/2.8.12"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-94" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-12-09T17:19:23Z",
    "nvd_published_at" : "2025-12-10T23:15:48Z"
  }
}