Vulnerability · Published May 20, 2021 · Assigned by mitre
CVE-2020-15522
Medium 5.9
In plain English
A medium-severity security flaw in the bouncycastle package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 75% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.9Medium
Exploit odds (30 days)1.5%top 25.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
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 & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | bouncycastle | 1.68-1 | DEBIAN-CVE-2020-15522 |
| Debian:13 | bouncycastle | 1.68-1 | DEBIAN-CVE-2020-15522 |
| Debian:14 | bouncycastle | 1.68-1 | DEBIAN-CVE-2020-15522 |
| Maven | org.bouncycastle:bc-fips | 1.0.2.1 | GHSA-6xx3-rg99-gc3p |
| Maven | org.bouncycastle:bcprov-ext-jdk15on | 1.66 | GHSA-6xx3-rg99-gc3p |
| Maven | org.bouncycastle:bcprov-ext-jdk16 | 1.66 | GHSA-6xx3-rg99-gc3p |
| Maven | org.bouncycastle:bcprov-jdk14 | 1.66 | GHSA-6xx3-rg99-gc3p |
| Maven | org.bouncycastle:bcprov-jdk15 | 1.66 | GHSA-6xx3-rg99-gc3p |
| Maven | org.bouncycastle:bcprov-jdk15on | 1.66 | GHSA-6xx3-rg99-gc3p |
| Maven | org.bouncycastle:bcprov-jdk15to18 | 1.66 | GHSA-6xx3-rg99-gc3p |
| Maven | org.bouncycastle:bcprov-jdk16 | 1.66 | GHSA-6xx3-rg99-gc3p |
| NuGet | bouncycastle | 1.8.7 | GHSA-6xx3-rg99-gc3p |
Affected products (as reported)
References
- https://www.bouncycastle.org/releasenotes.html x_refsource_MISC
- https://github.com/bcgit/bc-java/wiki/CVE-2020-15522 x_refsource_MISC
- https://github.com/bcgit/bc-csharp/wiki/CVE-2020-15522 x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20210622-0007/ x_refsource_CONFIRM