Description
Http4s is a Scala interface for HTTP services. In versions from 1.0.0-M1 to before 1.0.0-M45 and before 0.23.31, http4s is vulnerable to HTTP Request Smuggling due to improper handling of HTTP trailer section. This vulnerability could enable attackers to bypass front-end servers security controls, launch targeted attacks against active users, and poison web caches. A pre-requisite for exploitation involves the web application being deployed behind a reverse-proxy that forwards trailer headers. This issue has been patched in versions 1.0.0-M45 and 0.23.31.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| http4s | http4s | < 0.23.31, >= 1.0.0-M1, < 1.0.0-M45 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.http4s:http4s-ember-core_2.12 | < 0.23.31 | 0.23.31 | GHSA-wcwh-7gfw-5wrr |
| Maven | org.http4s:http4s-ember-core_2.13 | < 0.23.31 | 0.23.31 | GHSA-wcwh-7gfw-5wrr |
| Maven | org.http4s:http4s-ember-core_2.13 | >= 1.0.0-M1, < 1.0.0-M45 | 1.0.0-M45 | GHSA-wcwh-7gfw-5wrr |
| Maven | org.http4s:http4s-ember-core_3 | < 0.23.31 | 0.23.31 | GHSA-wcwh-7gfw-5wrr |
| Maven | org.http4s:http4s-ember-core_3 | >= 1.0.0-M1, < 1.0.0-M45 | 1.0.0-M45 | GHSA-wcwh-7gfw-5wrr |