CVE-2020-15522 is a timing side-channel vulnerability affecting Bouncy Castle BC Java before 1.66, BC C# .NET before 1.8.7, and related FIPS API versions. This flaw allows an attacker to potentially deduce private key information by observing timing differences during the generation of multiple deterministic ECDSA signatures. Rated Medium (CVSS 5.9), it requires high attack complexity (AC:H) but can lead to high confidentiality impact (C:H) without user interaction. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 1.8.7CPE matchmatch criteria | cpe:2.3:a:bouncycastle:bc-csharp:*:*:*:*:*:*:*:* | ||
< 1.0.1.1CPE matchmatch criteria | cpe:2.3:a:bouncycastle:bouncy_castle_fips_.net_api:*:*:*:*:*:*:*:* | ||
< 1.0.1.2CPE matchmatch criteria | cpe:2.3:a:bouncycastle:fips_java_api:*:*:*:*:*:*:*:* | ||
>= 1.0.2, < 1.0.2.1CPE matchmatch criteria | cpe:2.3:a:bouncycastle:fips_java_api:*:*:*:*:*:*:*:* | ||
< 1.66CPE matchmatch criteria | cpe:2.3:a:bouncycastle:the_bouncy_castle_crypto_package_for_java:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
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