Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2004-2721

Severity CVSS v4.0:
Pending analysis
Type:
CWE-310 Cryptographic Issues
Publication date:
31/12/2004
Last modified:
03/04/2025

Description

The CheckGroup function in openSkat VTMF before 2.1 generates public key pairs in which the "p" variable might not be prime, which allows remote attackers to determine the private key and decrypt messages.

Impact

Vector 2.0
AV:N/AC:M/Au:N/C:P/I:N/A:N CVSS v2.0 Severity and Metrics:

Base Score: 4.30 MEDIUM
Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): None
Availability (A): None

Base Score 2.0
4.30
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:heiko_stamer:openskat:*:*:*:*:*:*:*:* 2.0 (including)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools