Vulnerability in openCryptoki Allows Extraction of Private Keys via Invalid Curve Attack
CVE-2021-3798

5.5MEDIUM

Key Information:

Vendor

Opencryptoki Project

Status
Opencryptoki
Vendor
CVE Published:
23 August 2022

What is CVE-2021-3798?

A flaw exists in openCryptoki related to the management of EC keys. Specifically, the soft token fails to validate whether an EC key is legitimate during creation (C_CreateObject) and while deriving keys using ECDH public data (C_DeriveKey). This oversight allows an attacker to exploit the system by conducting an invalid curve attack, potentially leading to the unauthorized extraction of private keys, which can compromise the security and integrity of cryptographic operations.

Affected Version(s)

opencryptoki Fixed in v3.17.0

References

https://bugzilla.redhat.com/show_bug.cgi?id=1990591
x_refsource_MISC
https://access.redhat.com/security/cve/CVE-2021-3798
x_refsource_MISC
https://github.com/opencryptoki/opencryptoki/pull/402
x_refsource_MISC

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.