Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Bouncycastle | Bc-Csharp | < 1.8.7 |
| Bouncycastle | Bouncy Castle Fips .Net Api | < 1.0.1.1 |
| Bouncycastle | Fips Java Api | < 1.0.1.2 |
| Bouncycastle | The Bouncy Castle Crypto Package For Java | < 1.66 |
Related Weaknesses (CWE)
References
- https://github.com/bcgit/bc-csharp/wiki/CVE-2020-15522Third Party Advisory
- https://github.com/bcgit/bc-java/wiki/CVE-2020-15522Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210622-0007/
- https://www.bouncycastle.org/releasenotes.htmlRelease NotesVendor Advisory
- https://github.com/bcgit/bc-csharp/wiki/CVE-2020-15522Third Party Advisory
- https://github.com/bcgit/bc-java/wiki/CVE-2020-15522Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210622-0007/
- https://www.bouncycastle.org/releasenotes.htmlRelease NotesVendor Advisory
FAQ
What is CVE-2020-15522?
CVE-2020-15522 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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 t...
How severe is CVE-2020-15522?
CVE-2020-15522 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-15522?
Check the references section above for vendor advisories and patch information. Affected products include: Bouncycastle Bc-Csharp, Bouncycastle Bouncy Castle Fips .Net Api, Bouncycastle Fips Java Api, Bouncycastle The Bouncy Castle Crypto Package For Java.