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.
| Date Added | Due Date | Vulnerability Name | Required Action |
|---|---|---|---|
| N/A |
| Type | Version | Base score | Base severity | Vector |
|---|---|---|---|---|
| Secondary | 4.0 | 6.3 | MEDIUM | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| Primary | 3.1 | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| Hyperlink | Source | Resource |
|---|---|---|
| https://github.com/http4s/http4s/commit/dd518f7c967e5165813b8d4a48a82b8fab852d41 | security-advisories@github.com | Patch |
| https://github.com/http4s/http4s/security/advisories/GHSA-wcwh-7gfw-5wrr | security-advisories@github.com | Exploit Vendor Advisory |
| https://github.com/http4s/http4s/security/advisories/GHSA-wcwh-7gfw-5wrr | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | Exploit Vendor Advisory |