CVE-2020-15522
"Bouncy Castle ECDSA Signature Timing 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.
INFO
Published Date :
May 20, 2021, 12:15 p.m.
Last Modified :
Nov. 21, 2024, 5:05 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.2
Public PoC/Exploit Available at Github
CVE-2020-15522 has a 2 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2020-15522
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-15522.
| URL | Resource |
|---|---|
| https://github.com/bcgit/bc-csharp/wiki/CVE-2020-15522 | Third Party Advisory |
| https://github.com/bcgit/bc-java/wiki/CVE-2020-15522 | Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20210622-0007/ | |
| https://www.bouncycastle.org/releasenotes.html | Release Notes Vendor Advisory |
| https://github.com/bcgit/bc-csharp/wiki/CVE-2020-15522 | Third Party Advisory |
| https://github.com/bcgit/bc-java/wiki/CVE-2020-15522 | Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20210622-0007/ | |
| https://www.bouncycastle.org/releasenotes.html | Release Notes Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
This modified open source code of openpdf 1.0.5 https://github.com/LibrePDF/OpenPDF/tree/1.0.5
Java
The Box SDK for Java.
hacktoberfest
Java Rich Text Format
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-15522 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-15522 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://github.com/bcgit/bc-csharp/wiki/CVE-2020-15522 Added Reference https://github.com/bcgit/bc-java/wiki/CVE-2020-15522 Added Reference https://security.netapp.com/advisory/ntap-20210622-0007/ Added Reference https://www.bouncycastle.org/releasenotes.html -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Jun. 22, 2021
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20210622-0007/ [No Types Assigned] -
Initial Analysis by [email protected]
May. 27, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:N/A:N) Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Changed Reference Type https://github.com/bcgit/bc-csharp/wiki/CVE-2020-15522 No Types Assigned https://github.com/bcgit/bc-csharp/wiki/CVE-2020-15522 Third Party Advisory Changed Reference Type https://github.com/bcgit/bc-java/wiki/CVE-2020-15522 No Types Assigned https://github.com/bcgit/bc-java/wiki/CVE-2020-15522 Third Party Advisory Changed Reference Type https://www.bouncycastle.org/releasenotes.html No Types Assigned https://www.bouncycastle.org/releasenotes.html Release Notes, Vendor Advisory Added CWE NIST CWE-362 Added CPE Configuration OR *cpe:2.3:a:bouncycastle:bc-csharp:*:*:*:*:*:*:*:* versions up to (excluding) 1.8.7 *cpe:2.3:a:bouncycastle:bouncy_castle_fips_.net_api:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.1.1 *cpe:2.3:a:bouncycastle:legion-of-the-bouncy-castle-fips-java-api:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.1.2 *cpe:2.3:a:bouncycastle:legion-of-the-bouncy-castle-fips-java-api:*:*:*:*:*:*:*:* versions from (including) 1.0.2 up to (excluding) 1.0.2.1 *cpe:2.3:a:bouncycastle:the_bouncy_castle_crypto_package_for_java:*:*:*:*:*:*:*:* versions up to (excluding) 1.66
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-15522 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-15522
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.13 }} 0.01%
score
0.47442
percentile