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.

Published: May 20, 2021
Updated: May 9, 2024
CVE: CVE-2020-15522
GHSA: GHSA-6xx3-rg99-gc3p
Severity: Medium
Exploit:

CVSS v3:

Severity: Medium
Score: 5.9
AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v2:

Severity: Low
Score: 4.3
AV:N/AC:M/Au:N/C:P/I:N/A:N

CWEs:

Affected Software
References

Software	From	Fixed in
bouncycastle / legion-of-the-bouncy-castle-fips-java-api	-	1.0.1.2
bouncycastle / legion-of-the-bouncy-castle-fips-java-api	1.0.2	1.0.2.1
bouncycastle / bc-csharp	-	1.8.7
bouncycastle / bouncy_castle_fips_.net_api	-	1.0.1.1
bouncycastle / the_bouncy_castle_crypto_package_for_java	-	1.66
org.bouncycastle / bc-fips	-	1.0.2.1
org.bouncycastle / bcprov-ext-jdk15on	-	1.66
org.bouncycastle / bcprov-ext-jdk16	-	1.66
org.bouncycastle / bcprov-jdk14	-	1.66
org.bouncycastle / bcprov-jdk15	-	1.66
org.bouncycastle / bcprov-jdk15on	-	1.66
org.bouncycastle / bcprov-jdk15to18	-	1.66
org.bouncycastle / bcprov-jdk16	-	1.66

Vulnerability Database

289,599

CVE-2020-15522