Description
FreePBX api module version 17.0.8 and prior contain a command injection vulnerability in the initiateGqlAPIProcess() function where GraphQL mutation input fields are passed directly to shell_exec() without sanitization or escaping. An authenticated user with a valid bearer token can send a GraphQL moduleOperations mutation with backtick-wrapped commands in the module field to execute arbitrary commands on the underlying host as the web server user.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| FreePBX | api | ≤ 17.0.8 | — |
References
- https://github.com/FreePBX/api/commit/5f194e39a47e5481e8947f9694304d32724175f6 patch
- https://github.com/FreePBX/api/blob/5f194e39a47e5481e8947f9694304d32724175f6/Api.class.php#L546C1-L554C3 related
- https://github.com/FreePBX/api/blob/5f194e39a47e5481e8947f9694304d32724175f6/ApiGqlHelper.class.php#L34C1-L36C136 related
- https://www.vulncheck.com/advisories/freepbx-api-module-command-injection-via-graphql third-party-advisory