CVE-2020-15522
May 20, 2021
Bouncy Castle BC Java before 1.66, BC C# .NET before 1.8.7, BC-FJA before 1.0.1.2, 1.0.2.1, and BC-FNA before 1.0.1.1 have a timing issue within the EC math library that can expose information about the private key when an attacker is able to observe timing information for the generation of multiple deterministic ECDSA signatures.
Affected Packages
org.bouncycastle:bcprov-jdk15on (JAVA):
Affected version(s) >=1.46 <1.66Fix Suggestion:
Update to version 1.66org.bouncycastle:bcprov-jdk15to18 (JAVA):
Affected version(s) >=1.63 <1.66Fix Suggestion:
Update to version 1.66org.bouncycastle:bc-fips (JAVA):
Affected version(s) >=1.0.0 <1.0.2.1Fix Suggestion:
Update to version 1.0.2.1org.bouncycastle:bcprov-ext-jdk15on (JAVA):
Affected version(s) >=1.46 <1.66Fix Suggestion:
Update to version 1.66Related Resources (6)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.2
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.9
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
CVSS v2
Base Score:
4.3
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Weakness Type (CWE)
EPSS
Base Score:
0.57
