CVE-2012-4449
Use of a Broken or Risky Cryptographic Algorithm in 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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2012-4449- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-327
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2012-4449- Updated
- 2026-11-02
EUVDEUVD-2022-4876 No score
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.
- Record
EUVD-2022-4876- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-q46v-cj5v-hvg6
Use of a Broken or Risky Cryptographic Algorithm in 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.
- Record
GHSA-q46v-cj5v-hvg6- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-327
- Updated
- 2026-11-02
OSVGHSA-q46v-cj5v-hvg6
Use of a Broken or Risky Cryptographic Algorithm in 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.
- Record
GHSA-q46v-cj5v-hvg6- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-327
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.apache.hadoop:hadoop-clientMaven |
before 0.23.4 | 0.23.4 |
org.apache.hadoop:hadoop-clientMaven |
1.0.0 up to 1.0.4 | 1.0.4 |
org.apache.hadoop:hadoop-clientMaven |
2.0.0 up to 2.0.2 | 2.0.2 |
org.apache.hadoop:hadoop-clientMaven |
before 0.23.4, plus listed versions 0.23.10.23.3 |
0.23.4 |
org.apache.hadoop:hadoop-clientMaven |
1.0.0 up to 1.0.4, plus listed versions 1.0.11.0.21.0.3 |
1.0.4 |
org.apache.hadoop:hadoop-clientMaven |
2.0.0 up to 2.0.2, plus listed versions 2.0.1-alpha2.0.2-alpha |
2.0.2 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2012-4449 is a critical vulnerability (CVSS 9.8) in Apache Hadoop, published October 30, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.19%, the 68th percentile. Fixed in org.apache.hadoop:hadoop-client 0.23.4.
References
cloudera.com/documentation/other/security-bulletins/topics/csb_topic_1.html
mail-archives.apache.org/mod_mbox/hadoop-general/201210.mbox/%3CCA+z3+9FYdPmzBEaMZ71SUqzRx=eU=o4mSHUsbrpzgR9X_F1c0Q%40mail.gmail.com%3E
nvd.nist.gov/vuln/detail/CVE-2012-4449
github.com/advisories/GHSA-q46v-cj5v-hvg6