CVE-2019-16782

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.

Affected products

Linuxmint, Rack, Suse, Ubuntu

Rack

< 1.6.12, 2.0.8

Fix

Available

CVSS 3.1

6.3 MEDIUM

EPSS

3.7% (89th percentile)

Weakness

CWE-203, CWE-208

NVD status

Modified

Published

2019-12-18

No exploit for CVE-2019-16782 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.