There's a possible information leak / session hijack vulnerability in Rack (RubyGem rack). This vulnerability is patched in versions 1.6.12 and 2.0.8. Attackers may be able to find and hijack sessions by using timing attacks targeting the session id. Session ids are usually stored and indexed in a database that uses some kind of scheme for speeding up lookups of that session id. By carefully measuring the amount of time it takes to look up a session, an attacker may be able to find a valid session id and hijack the session. The session id itself may be generated randomly, but the way the session is indexed by the backing store does not use a secure comparison. Reference: https://github.com/rack/rack/security/advisories/GHSA-hrqr-hxpp-chr3 Upstream commit: https://github.com/rack/rack/commit/7fecaee81f59926b6e1913511c90650e76673b38
Created rubygem-rack tracking bugs for this issue: Affects: epel-6 [bug 1789102] Affects: epel-7 [bug 1789103] Affects: fedora-all [bug 1789101]
Mitigation: There is no mitigation for this issue, the flaw can only be resolved by applying updates.
External References: https://github.com/rack/rack/security/advisories/GHSA-hrqr-hxpp-chr3
This issue has been addressed in the following products: CloudForms Management Engine 5.11 Via RHSA-2020:2480 https://access.redhat.com/errata/RHSA-2020:2480
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2019-16782
Statement: Because Red Hat OpenStack Platform 13.0 Operational Tools packaged the flawed code, but does not use its functionality, its Impact has been reduced to 'Low'.