The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5 to JDK 1.7.
In the Bouncy Castle JCE Provider version 1.55 and earlier the primary engine class used for AES was AESFastEngine. Due to the highly table driven approach used in the algorithm it turns out that if the data channel on the CPU can be monitored the lookup table accesses are sufficient to leak information on the AES key being used. There was also a leak in AESEngine although it was substantially less. AESEngine has been modified to remove any signs of leakage (testing carried out on Intel X86-64) and is now the primary AES class for the BC JCE provider from 1.56. Use of AESFastEngine is now only recommended where otherwise deemed appropriate.
CVE-2016-1000339 - Medium Severity Vulnerability
The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5 to JDK 1.7.
Library home page: http://www.bouncycastle.org/java.html
Path to dependency file: /handler/pom.xml
Path to vulnerable library: /home/wss-scanner/.m2/repository/org/bouncycastle/bcprov-jdk15on/1.50/bcprov-jdk15on-1.50.jar
Dependency Hierarchy: - bcpkix-jdk15on-1.50.jar (Root Library) - :x: **bcprov-jdk15on-1.50.jar** (Vulnerable Library)
Found in HEAD commit: 349543fa7012e8d0f84182eb672766e12d70eac3
Found in base branch: master
In the Bouncy Castle JCE Provider version 1.55 and earlier the primary engine class used for AES was AESFastEngine. Due to the highly table driven approach used in the algorithm it turns out that if the data channel on the CPU can be monitored the lookup table accesses are sufficient to leak information on the AES key being used. There was also a leak in AESEngine although it was substantially less. AESEngine has been modified to remove any signs of leakage (testing carried out on Intel X86-64) and is now the primary AES class for the BC JCE provider from 1.56. Use of AESFastEngine is now only recommended where otherwise deemed appropriate.
Publish Date: 2018-06-04
URL: CVE-2016-1000339
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: Low - Integrity Impact: None - Availability Impact: None
For more information on CVSS3 Scores, click here.Type: Upgrade version
Origin: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1000339
Release Date: 2018-06-04
Fix Resolution (org.bouncycastle:bcprov-jdk15on): 1.56
Direct dependency fix Resolution (org.bouncycastle:bcpkix-jdk15on): 1.53
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