CVE-2020-15522

EUVD-2021-1608
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.
Race Condition
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.9 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 68%
Affected Products (NVD)
VendorProductVersion
bouncycastlebc-csharp
𝑥
< 1.8.7
bouncycastlebouncy_castle_fips_.net_api
𝑥
< 1.0.1.1
bouncycastlefips_java_api
𝑥
< 1.0.1.2
bouncycastlefips_java_api
1.0.2 ≤
𝑥
< 1.0.2.1
bouncycastlethe_bouncy_castle_crypto_package_for_java
𝑥
< 1.66
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
bouncycastle
bookworm
1.72-2
fixed
bullseye
1.68-2
fixed
buster
no-dsa
sid
1.77-1
fixed
stretch
no-dsa
trixie
1.77-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
bouncycastle
bionic
needs-triage
focal
needs-triage
groovy
ignored
hirsute
not-affected
impish
not-affected
jammy
not-affected
kinetic
not-affected
lunar
not-affected
mantic
not-affected
noble
not-affected
trusty
dne
xenial
needs-triage