Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2002-1336

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
11/12/2002
Last modified:
03/04/2025

Description

TightVNC before 1.2.6 generates the same challenge string for multiple connections, which allows remote attackers to bypass VNC authentication by sniffing the challenge and response of other users.

Impact

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

Base Score: 7.50 HIGH
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

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

Base Score 2.0
7.50
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:tightvnc:tightvnc:1.2.0:*:*:*:*:*:*:*
cpe:2.3:a:tightvnc:tightvnc:1.2.1:*:*:*:*:*:*:*
cpe:2.3:a:tightvnc:tightvnc:1.2.3:*:*:*:*:*:*:*
cpe:2.3:a:tightvnc:tightvnc:1.2.4:*:*:*:*:*:*:*
cpe:2.3:a:tightvnc:tightvnc:1.2.5:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools