CVE-2018-20187
Botan ECC Key Generation Timing Side-Channel Leaks
Description
A side-channel issue was discovered in Botan before 2.9.0. An attacker capable of precisely measuring the time taken for ECC key generation may be able to derive information about the high bits of the secret key, as the function to derive the public point from the secret scalar uses an unblinded Montgomery ladder whose loop iteration count depends on the bitlength of the secret. This issue affects only key generation, not ECDSA signatures or ECDH key agreement.
INFO
Published Date :
March 8, 2019, 7:29 p.m.
Last Modified :
March 12, 2019, 8:39 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.2
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-2018-20187.
| URL | Resource |
|---|---|
| https://botan.randombit.net/news.html | Release Notes Vendor Advisory |
| https://botan.randombit.net/security.html | Vendor Advisory |
| https://github.com/crocs-muni/ECTester | Not Applicable Third Party 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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2018-20187 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2018-20187 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 [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Mar. 12, 2019
Action Type Old Value New Value Added CVSS V2 (AV:N/AC:M/Au:N/C:P/I:N/A:N) Added CVSS V3 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Changed Reference Type https://github.com/crocs-muni/ECTester No Types Assigned https://github.com/crocs-muni/ECTester Not Applicable, Third Party Advisory Changed Reference Type https://botan.randombit.net/security.html No Types Assigned https://botan.randombit.net/security.html Vendor Advisory Changed Reference Type https://botan.randombit.net/news.html No Types Assigned https://botan.randombit.net/news.html Release Notes, Vendor Advisory Added CWE CWE-320 Added CPE Configuration OR *cpe:2.3:a:botan_project:botan:*:*:*:*:*:*:*:* versions up to (excluding) 2.9.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2018-20187 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-2018-20187
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.12 }} -0.01%
score
0.44335
percentile