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Vulnerability record · CVE-2012-4449 · published 30 October 2017

CVE-2012-4449: Apache hadoop broken cryptographic algorithm vulnerability

Apache · Hadoop

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.

9.8 CVSS 3.0 Critical EPSS 1.2% · top 33.3% CWE-327 · Broken cryptographic algorithm
9.8CVSS 3.0 base score, v2 7.5
1.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
16 Jun 2026Last modified by NVD

Description

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.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://mail-archives.apache.org/mod_mbox/hadoop-general/201210.mbox/%3CCA+z3+9FYdPmzBEaMZ71SUqzRx=eU=o4mSHUsbrpzgR9X_F1c
https://www.cloudera.com/documentation/other/security-bulletins/topics/csb_topic_1.html#topic_1_0 Issue TrackingThird Party Advisory
http://mail-archives.apache.org/mod_mbox/hadoop-general/201210.mbox/%3CCA+z3+9FYdPmzBEaMZ71SUqzRx=eU=o4mSHUsbrpzgR9X_F1c
https://www.cloudera.com/documentation/other/security-bulletins/topics/csb_topic_1.html#topic_1_0 Issue TrackingThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2012-4449), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.