CVE-2012-4449: Apache Hadoop

Critical severity, CVSS 9.8. EPSS: 1.2% chance of exploitation in the next 30 days.

Apache Hadoop before 0.23.4, 1.x before 1.0.4, and 2.x before 2.0.2 generate token passwords using a 20-bit secret when Kerberos security features are enabled, which makes it easier for context-dependent attackers to crack secret keys via a brute-force attack.

Affected products

• Apache Hadoop: up to and including 0.23.3; version 1.0.0 only; version 1.0.1 only; version 1.0.2 only; version 1.0.3 only; version 2.0.0 only; …

Published 2017-10-30. Last modified 2026-06-16.