Description
Echo is a Go web framework. Prior to 4.16.0 and 5.4.0, Echo's MethodOverride middleware accepts a safe HTTP method as the override target for a POST request. When MethodOverride is registered before CSRF in the post-routing middleware chain, route selection retains the original state-changing POST handler but the override changes the method before CSRF evaluates it, causing both token validation and Sec-Fetch-Site checks to be skipped. A cross-site exploit requires an authenticated victim and an override value that a browser-submitted request can control, such as the form getter used by the advisory reproducer; the default X-HTTP-Method-Override header getter is not settable by a cross-site form. This issue is fixed in 4.16.0 and 5.4.0.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
labstack echo
< 4.16.0affected>= 5.0.0, < 5.4.0affected
References
- https://github.com/labstack/echo/security/advisories/GHSA-r7w9-592q-9vg4 ↗
- https://github.com/labstack/echo/commit/b838391e2eade87ae7e5a09d7bb5087bec271ec1 ↗
- https://github.com/labstack/echo/commit/fc410094b2f3415cf2bf5204082137b205bfd5af ↗
- https://github.com/labstack/echo/releases/tag/v4.16.0 ↗
- https://github.com/labstack/echo/releases/tag/v5.4.0 ↗