Http4s vulnerable to HTTP Request Smuggling due to improper handling of HTTP trailer section
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 0.23.31, 1.0.0-M45
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: poc
- Automatable: no
- Technical impact: partial
Summary
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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: poc · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- http4s http4s
fixed in 0.23.31; From 1.0.0-M1 · fixed in 1.0.0-M45
- org.http4s:http4s-ember-core_2.12Maven
fixed in 0.23.31
- org.http4s:http4s-ember-core_2.13Maven
fixed in 0.23.31
- org.http4s:http4s-ember-core_3Maven
fixed in 0.23.31
- org.http4s:http4s-ember-core_2.13Maven
From 1.0.0-M1 · fixed in 1.0.0-M45
- org.http4s:http4s-ember-core_3Maven
From 1.0.0-M1 · fixed in 1.0.0-M45