dbt allows Binding to an Unrestricted IP Address via socketsocket

### Summary Binding to `INADDR_ANY (0.0.0.0)` or `IN6ADDR_ANY (::)` exposes an application on all network interfaces, increasing the risk of unauthorized access. While doing some static analysis and code inspection, I found the following code binding a socket to `INADDR_ANY` by passing `""` as the address. This effectively binds to any network interface on the local system, not just localhost (127.0.0.1). ### Details As stated in the Python docs, a special form for address is accepted instead of a host address: `''` represents `INADDR_ANY`, equivalent to `"0.0.0.0"`. On systems with IPv6, '' represents `IN6ADDR_ANY`, which is equivalent to `"::"`. https://github.com/dbt-labs/dbt-core/blob/main/core/dbt/task/docs/serve.py#L23C38-L23C39 The text around this code also imply the intention is to host docs only on localhost. ### PoC To recreate, run the docs ServeTask.run() to stand up the HTTP server. Then run `netstat` to see what addresses this process is bound. ### Impact A user who serves docs on an unsecured public network, may unknowingly be hosting an unsecured (http) web site for any remote user/system to access on the same network. Further references: https://docs.python.org/3/library/socket.html#socket-families https://docs.securesauce.dev/rules/PY030 https://cwe.mitre.org/data/definitions/1327.html ### Patches The issue has has been mitigated in [dbt-core v1.6.15](https://github.com/dbt-labs/dbt-core/releases/tag/v1.6.15), [dbt-core v1.7.15](https://github.com/dbt-labs/dbt-core/releases/tag/v1.7.15), and [dbt-core v1.8.1](https://github.com/dbt-labs/dbt-core/releases/tag/v1.8.1) by binding to localhost explicitly by default in `dbt docs serve` (https://github.com/dbt-labs/dbt-core/issues/10209).

CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Severity from

GitHub (reviewed advisory)

Weakness

CWE-1327

Also known as

CVE-2024-36105, PYSEC-2026-1292

• github.com/dbt-labs/dbt-core/security/advisories/GHSA-pmrx-695r-4349
• nvd.nist.gov/vuln/detail/CVE-2024-36105
• github.com/dbt-labs/dbt-core/issues/10209
• github.com/dbt-labs/dbt-core/pull/10208
• github.com/dbt-labs/dbt-core/commit/0c08d7a19ad1740be3cb0b2e6d9d64f6537176f7
• cwe.mitre.org/data/definitions/1327.html
• docs.python.org/3/library/socket.html#socket-families
• docs.securesauce.dev/rules/PY030
• github.com/dbt-labs/dbt-core
• github.com/dbt-labs/dbt-core/blob/main/core/dbt/task/docs/serve.py#L23C38-L23C39
• github.com/dbt-labs/dbt-core/releases/tag/v1.6.15
• github.com/dbt-labs/dbt-core/releases/tag/v1.7.15
• github.com/dbt-labs/dbt-core/releases/tag/v1.8.1