CVE-2019-16782

Priority
Description
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.
Notes
Package
Upstream:needs-triage
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):needed
Ubuntu 16.04 LTS (Xenial Xerus):needed
Ubuntu 18.04 LTS (Bionic Beaver):needed
Ubuntu 19.10 (Eoan Ermine):needed
Ubuntu 20.04 (Focal Fossa):needed
Patches:
Upstream:https://github.com/rack/rack/commit/7fecaee81f59926b6e1913511c90650e76673b38
More Information

Updated: 2020-01-29 18:59:04 UTC (commit 40f18bf14da5fb50662e1f861ea594a462b207fe)