CVE-2020-28052
Published:December 18, 2020
Updated:May 17, 2026
An issue was discovered in Legion of the Bouncy Castle BC Java 1.65 and 1.66. The OpenBSDBCrypt.checkPassword utility method compared incorrect data when checking the password, allowing incorrect passwords to indicate they were matching with previously hashed ones that were different.
Affected Packages
org.bouncycastle:bcprov-jdk14 (JAVA):
Affected version(s) =1.65 <1.67Fix Suggestion:
Update to version 1.67org.bouncycastle:bcprov-ext-jdk15on (JAVA):
Affected version(s) >=1.65 <1.67Fix Suggestion:
Update to version 1.67org.bouncycastle:bcprov-jdk15on (JAVA):
Affected version(s) >=1.65 <1.67Fix Suggestion:
Update to version 1.67org.bouncycastle:bcprov-jdk15to18 (JAVA):
Affected version(s) >=1.65 <1.67Fix Suggestion:
Update to version 1.67Related Resources (47)
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Contact UsCVSS v4
Base Score:
9.2
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Always-Incorrect Control Flow Implementation
EPSS
Base Score:
4.10