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 DSA signature generation is vulnerable to timing attack. Where timings can be closely observed for the generation of signatures, the lack of blinding in 1.55, or earlier, may allow an attacker to gain information about the signature's k value and ultimately the private value as well.
CVE-2016-1000341 - Medium Severity Vulnerability
Vulnerable Library - bcprov-jdk15on-1.50.jar
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
Vulnerability Details
In the Bouncy Castle JCE Provider version 1.55 and earlier DSA signature generation is vulnerable to timing attack. Where timings can be closely observed for the generation of signatures, the lack of blinding in 1.55, or earlier, may allow an attacker to gain information about the signature's k value and ultimately the private value as well.
Publish Date: 2018-06-04
URL: CVE-2016-1000341
CVSS 3 Score Details (5.9)
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: High - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: High - Integrity Impact: None - Availability Impact: None
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1000341
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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