Information disclosure in Bouncy Castle BC Java
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-15522 |
| CWE-ID | CWE-208 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
The Bouncy Castle Crypto Package For Java Universal components / Libraries / Libraries used by multiple products |
| Vendor | Legion of the Bouncy Castle Inc. |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Information Exposure Through Timing Discrepancy
EUVDB-ID: #VU55035
Risk: Medium
CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-15522
CWE-ID:
CWE-208 - Information Exposure Through Timing Discrepancy
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to sensitive information.
The
vulnerability exists due to a timing issue within the EC math library. A remote attacker who can observe timing information for the generation of multiple deterministic ECDSA signatures is able to reconstruct the private key used for encryption.
Install updates from vendor's website.
Vulnerable software versionsThe Bouncy Castle Crypto Package For Java: 1.0 - 1.65
External linkshttp://github.com/bcgit/bc-csharp/wiki/CVE-2020-15522
http://www.bouncycastle.org/releasenotes.html
http://github.com/bcgit/bc-java/wiki/CVE-2020-15522
http://security.netapp.com/advisory/ntap-20210622-0007/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
