Authentication Bypass by Primary Weakness
Draft Base
Structure: Simple
Description
The authentication algorithm is sound, but the implemented mechanism can be bypassed as the result of a separate weakness that is primary to the authentication error.
Common Consequences 1
Scope: Access Control
Impact: Bypass Protection Mechanism
Observed Examples 3
CVE-2002-1374The provided password is only compared against the first character of the real password.
CVE-2000-0979The password is not properly checked, which allows remote attackers to bypass access controls by sending a 1-byte password that matches the first character of the real password.
CVE-2001-0088Chain: Forum software does not properly initialize an array, which inadvertently sets the password to a single character, allowing remote attackers to easily guess the password and gain administrative privileges.
Applicable Platforms
Languages:
Not Language-Specific : Undetermined
Modes of Introduction
Implementation
Related Weaknesses
ChildOf:
Weak Authentication (CWE-1390)
Taxonomy Mapping
- PLOVER
Notes
RelationshipMost "authentication bypass" errors are resultant, not primary.