| id: GO-2024-2883 |
| modules: |
| - module: github.com/rs/cors |
| versions: |
| - introduced: 1.9.0 |
| - fixed: 1.11.0 |
| vulnerable_at: 1.10.1 |
| packages: |
| - package: github.com/rs/cors |
| symbols: |
| - Cors.handlePreflight |
| - Cors.areHeadersAllowed |
| - New |
| - splitHeaderValues |
| derived_symbols: |
| - AllowAll |
| - Cors.HandlerFunc |
| - Cors.ServeHTTP |
| - Default |
| summary: Denial of service via malicious preflight requests in github.com/rs/cors |
| description: |- |
| Middleware causes a prohibitive amount of heap allocations when processing |
| malicious preflight requests that include a Access-Control-Request-Headers |
| (ACRH) header whose value contains many commas. This behavior can be abused by |
| attackers to produce undue load on the middleware/server as an attempt to cause |
| a denial of service. |
| ghsas: |
| - GHSA-mh55-gqvf-xfwm |
| credits: |
| - '@jub0bs' |
| references: |
| - fix: https://github.com/rs/cors/pull/171 |
| - report: https://github.com/rs/cors/issues/170 |
| source: |
| id: go-security-team |
| created: 2024-07-02T11:27:50.335482-04:00 |
| review_status: REVIEWED |
