CVE-2020-15522

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.

CVSS v3.0 5.9 MEDIUM
CVSS v2.0 4.3 MEDIUM

5.9^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

4.3^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:N/A:N

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://github.com/bcgit/bc-csharp/wiki/CVE-2020-15522	Third Party Advisory
https://www.bouncycastle.org/releasenotes.html	Release Notes Vendor Advisory
https://github.com/bcgit/bc-java/wiki/CVE-2020-15522	Third Party Advisory
https://security.netapp.com/advisory/ntap-20210622-0007/

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:bouncycastle:bc-csharp::::::::
	cpe:2.3:a:bouncycastle:bouncy_castle_fips_.net_api::::::::
	cpe:2.3:a:bouncycastle:legion-of-the-bouncy-castle-fips-java-api::::::::
	cpe:2.3:a:bouncycastle:legion-of-the-bouncy-castle-fips-java-api::::::::
	cpe:2.3:a:bouncycastle:the_bouncy_castle_crypto_package_for_java::::::::

Information

Published : 2021-05-20 05:15

Updated : 2021-06-22 02:15

NVD link : CVE-2020-15522

Mitre link : CVE-2020-15522

JSON object : View

CWE

CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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Products Affected

bouncycastle

legion-of-the-bouncy-castle-fips-java-api
the_bouncy_castle_crypto_package_for_java
bc-csharp
bouncy_castle_fips_.net_api

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