Description
Koa is expressive middleware for Node.js using ES2017 async functions. Prior to versions 0.21.2, 1.7.1, 2.15.4, and 3.0.0-alpha.3, Koa uses an evil regex to parse the `X-Forwarded-Proto` and `X-Forwarded-Host` HTTP headers. This can be exploited to carry out a Denial-of-Service attack. Versions 0.21.2, 1.7.1, 2.15.4, and 3.0.0-alpha.3 fix the issue.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
koajs koa
< 0.21.2affected>= 1.0.0, < 1.7.1affected>= 2.0.0-alpha.1, < 2.15.4affected>= 3.0.0-alpha.0, < < 3.0.0-alpha.3affected
References
- https://github.com/koajs/koa/security/advisories/GHSA-593f-38f6-jp5m ↗
- https://github.com/koajs/koa/commit/5054af6e31ffd451a4151a1fe144cef6e5d0d83c ↗
- https://github.com/koajs/koa/commit/5f294bb1c7c8d9c61904378d250439a321bffd32 ↗
- https://github.com/koajs/koa/commit/93fe903fc966635a991bcf890cfc3427d33a1a08 ↗
- https://github.com/koajs/koa/blob/master/lib/request.js#L259 ↗
- https://github.com/koajs/koa/blob/master/lib/request.js#L404 ↗
- https://github.com/koajs/koa/releases/tag/2.15.4 ↗