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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2018-20187 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://botan.randombit.net/news.html Release Notes  Vendor Advisory 
https://botan.randombit.net/news.html Release Notes  Vendor Advisory 
https://botan.randombit.net/security.html Vendor Advisory 
https://botan.randombit.net/security.html Vendor Advisory 
https://github.com/crocs-muni/ECTester Not Applicable  Third Party Advisory 
https://github.com/crocs-muni/ECTester Not Applicable  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-320 Key Management Errors cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-20187
NVD Published Date:
03/08/2019
NVD Last Modified:
11/20/2024
Source:
MITRE