RubySec

Providing security resources for the Ruby community

CVE-2020-7670 (agoo): HTTP Request Smuggling in Agoo

ADVISORIES

GEM

agoo

SEVERITY

CVSS v3: 7.5

PATCHED VERSIONS

  • >= 2.13.0

DESCRIPTION

agoo through 2.12.3 allows request smuggling attacks where agoo is used as a backend and a frontend proxy also being vulnerable. It is possible to conduct HTTP request smuggling attacks by sending the Content-Length header twice. Furthermore, invalid Transfer Encoding headers were found to be parsed as valid which could be leveraged for TE:CL smuggling attacks.