Red Hat: CVE-2021-21295: Moderate: Satellite 6.11 Release (RHSA-2022:5498)
Description
Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty (io.netty:netty-codec-http2) before version 4.1.60.Final there is a vulnerability that enables request smuggling. If a Content-Length header is present in the original HTTP/2 request, the field is not validated by `Http2MultiplexHandler` as it is propagated up. This is fine as long as the request is not proxied through as HTTP/1.1. If the request comes in as an HTTP/2 stream, gets converted into the HTTP/1.1 domain objects (`HttpRequest`, `HttpContent`, etc.) via `Http2StreamFrameToHttpObjectCodec `and then sent up to the child channel's pipeline and proxied through a remote peer as HTTP/1.1 this may result in request smuggling. In a proxy case, users may assume the content-length is validated somehow, which is not the case. If the request is forwarded to a backend channel that is a HTTP/1.1 connection, the Content-Length now has meaning and needs to be checked. An attacker can smuggle requests inside the body as it gets downgraded from HTTP/2 to HTTP/1.1. For an example attack refer to the linked GitHub Advisory. Users are only affected if all of this is true: `HTTP2MultiplexCodec` or `Http2FrameCodec` is used, `Http2StreamFrameToHttpObjectCodec` is used to convert to HTTP/1.1 objects, and these HTTP/1.1 objects are forwarded to another remote peer. This has been patched in 4.1.60.Final As a workaround, the user can do the validation by themselves by implementing a custom `ChannelInboundHandler` that is put in the `ChannelPipeline` behind `Http2StreamFrameToHttpObjectCodec`.
Solution(s)
- redhat-upgrade-foreman-cli
- redhat-upgrade-rubygem-amazing_print
- redhat-upgrade-rubygem-apipie-bindings
- redhat-upgrade-rubygem-clamp
- redhat-upgrade-rubygem-domain_name
- redhat-upgrade-rubygem-fast_gettext
- redhat-upgrade-rubygem-foreman_maintain
- redhat-upgrade-rubygem-hammer_cli
- redhat-upgrade-rubygem-hammer_cli_foreman
- redhat-upgrade-rubygem-hammer_cli_foreman_admin
- redhat-upgrade-rubygem-hammer_cli_foreman_ansible
- redhat-upgrade-rubygem-hammer_cli_foreman_azure_rm
- redhat-upgrade-rubygem-hammer_cli_foreman_bootdisk
- redhat-upgrade-rubygem-hammer_cli_foreman_discovery
- redhat-upgrade-rubygem-hammer_cli_foreman_openscap
- redhat-upgrade-rubygem-hammer_cli_foreman_remote_execution
- redhat-upgrade-rubygem-hammer_cli_foreman_tasks
- redhat-upgrade-rubygem-hammer_cli_foreman_templates
- redhat-upgrade-rubygem-hammer_cli_foreman_virt_who_configure
- redhat-upgrade-rubygem-hammer_cli_foreman_webhooks
- redhat-upgrade-rubygem-hammer_cli_katello
- redhat-upgrade-rubygem-hashie
- redhat-upgrade-rubygem-highline
- redhat-upgrade-rubygem-http-cookie
- redhat-upgrade-rubygem-jwt
- redhat-upgrade-rubygem-little-plugger
- redhat-upgrade-rubygem-locale
- redhat-upgrade-rubygem-logging
- redhat-upgrade-rubygem-mime-types
- redhat-upgrade-rubygem-mime-types-data
- redhat-upgrade-rubygem-multi_json
- redhat-upgrade-rubygem-netrc
- redhat-upgrade-rubygem-oauth
- redhat-upgrade-rubygem-powerbar
- redhat-upgrade-rubygem-rest-client
- redhat-upgrade-rubygem-unf
- redhat-upgrade-rubygem-unf_ext
- redhat-upgrade-rubygem-unf_ext-debuginfo
- redhat-upgrade-rubygem-unf_ext-debugsource
- redhat-upgrade-rubygem-unicode
- redhat-upgrade-rubygem-unicode-debuginfo
- redhat-upgrade-rubygem-unicode-debugsource
- redhat-upgrade-rubygem-unicode-display_width
- redhat-upgrade-satellite-cli
- redhat-upgrade-satellite-clone
- redhat-upgrade-satellite-maintain
- redhat-upgrade-tfm-rubygem-amazing_print
- redhat-upgrade-tfm-rubygem-apipie-bindings
- redhat-upgrade-tfm-rubygem-clamp
- redhat-upgrade-tfm-rubygem-domain_name
- redhat-upgrade-tfm-rubygem-fast_gettext
- redhat-upgrade-tfm-rubygem-hammer_cli
- redhat-upgrade-tfm-rubygem-hammer_cli_foreman
- redhat-upgrade-tfm-rubygem-hammer_cli_foreman_admin
- redhat-upgrade-tfm-rubygem-hammer_cli_foreman_ansible
- redhat-upgrade-tfm-rubygem-hammer_cli_foreman_azure_rm
- redhat-upgrade-tfm-rubygem-hammer_cli_foreman_bootdisk
- redhat-upgrade-tfm-rubygem-hammer_cli_foreman_discovery
- redhat-upgrade-tfm-rubygem-hammer_cli_foreman_openscap
- redhat-upgrade-tfm-rubygem-hammer_cli_foreman_remote_execution
- redhat-upgrade-tfm-rubygem-hammer_cli_foreman_tasks
- redhat-upgrade-tfm-rubygem-hammer_cli_foreman_templates
- redhat-upgrade-tfm-rubygem-hammer_cli_foreman_virt_who_configure
- redhat-upgrade-tfm-rubygem-hammer_cli_foreman_webhooks
- redhat-upgrade-tfm-rubygem-hammer_cli_katello
- redhat-upgrade-tfm-rubygem-hashie
- redhat-upgrade-tfm-rubygem-highline
- redhat-upgrade-tfm-rubygem-http-cookie
- redhat-upgrade-tfm-rubygem-jwt
- redhat-upgrade-tfm-rubygem-little-plugger
- redhat-upgrade-tfm-rubygem-locale
- redhat-upgrade-tfm-rubygem-logging
- redhat-upgrade-tfm-rubygem-mime-types
- redhat-upgrade-tfm-rubygem-mime-types-data
- redhat-upgrade-tfm-rubygem-multi_json
- redhat-upgrade-tfm-rubygem-netrc
- redhat-upgrade-tfm-rubygem-oauth
- redhat-upgrade-tfm-rubygem-powerbar
- redhat-upgrade-tfm-rubygem-rest-client
- redhat-upgrade-tfm-rubygem-unf
- redhat-upgrade-tfm-rubygem-unf_ext
- redhat-upgrade-tfm-rubygem-unf_ext-debuginfo
- redhat-upgrade-tfm-rubygem-unicode
- redhat-upgrade-tfm-rubygem-unicode-debuginfo
- redhat-upgrade-tfm-rubygem-unicode-display_width
- redhat-upgrade-tfm-runtime
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