If a script accepts an external input and outputs it without modification as a part of HTTP responses, an attacker can use newline characters to deceive the clients that the HTTP response header is stopped at there, and can inject fake HTTP responses after the newline characters to show malicious contents to the clients. Affected versions: Ruby 2.2 series: 2.2.9 and earlier Ruby 2.3 series: 2.3.6 and earlier Ruby 2.4 series: 2.4.3 and earlier Ruby 2.5 series: 2.5.0 and earlier External References: https://www.ruby-lang.org/en/news/2018/03/28/http-response-splitting-in-webrick-cve-2017-17742/
Created ruby tracking bugs for this issue: Affects: fedora-all [bug 1561957]
Mitigation: The server can manually sanitize possibly untrusted headers prior to inserting them in the reply.
Statement: This issue affects the versions of ruby as shipped with Red Hat CloudForms 4. Red Hat Product Security has rated this issue as having security impact of Moderate. A future update may address this issue. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/. This issue affects the versions of ruby as shipped with Red Hat Subscription Asset Manager 1. Red Hat Product Security has rated this issue as having security impact of Moderate. A future update may address this issue. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
> Affected versions: Upstream patch: trunk https://github.com/ruby/ruby/commit/d9d4a28f1cdd05a0e8dabb36d747d40bbcc30f16 > Ruby 2.2 series: 2.2.9 and earlier Backport to Ruby 2.2. On ruby_2_2 branch https://github.com/ruby/ruby/commit/bbda1a027475bf7ce5e1a9583a7b55d0be71c8fe > Ruby 2.3 series: 2.3.6 and earlier > Ruby 2.4 series: 2.4.3 and earlier > Ruby 2.5 series: 2.5.0 and earlier Check ruby_2_X branches searching by "webrick: prevent response splitting and header injection".
This issue has been addressed in the following products: Red Hat Software Collections for Red Hat Enterprise Linux 6 Red Hat Software Collections for Red Hat Enterprise Linux 7 Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS Via RHSA-2018:3729 https://access.redhat.com/errata/RHSA-2018:3729
This issue has been addressed in the following products: Red Hat Software Collections for Red Hat Enterprise Linux 6 Red Hat Software Collections for Red Hat Enterprise Linux 7 Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS Via RHSA-2018:3730 https://access.redhat.com/errata/RHSA-2018:3730
This issue has been addressed in the following products: Red Hat Software Collections for Red Hat Enterprise Linux 7 Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS Via RHSA-2018:3731 https://access.redhat.com/errata/RHSA-2018:3731
This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2019:2028 https://access.redhat.com/errata/RHSA-2019:2028
This issue has been addressed in the following products: Red Hat Enterprise Linux 7.5 Extended Update Support Via RHSA-2020:1963 https://access.redhat.com/errata/RHSA-2020:1963
This issue has been addressed in the following products: Red Hat Enterprise Linux 7.4 Advanced Update Support Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions Red Hat Enterprise Linux 7.4 Telco Extended Update Support Via RHSA-2020:2212 https://access.redhat.com/errata/RHSA-2020:2212
This issue has been addressed in the following products: Red Hat Enterprise Linux 7.6 Extended Update Support Via RHSA-2020:2288 https://access.redhat.com/errata/RHSA-2020:2288