CWE-204: Observable Response Discrepancy

ID CWE-204

Abstraction Base

Structure Simple

Status Incomplete

Number of CVEs 53

The product provides different responses to incoming requests in a way that reveals internal state information to an unauthorized actor outside of the intended control sphere.

This issue frequently occurs during authentication, where a difference in failed-login messages could allow an attacker to determine if the username is valid or not. These exposures can be inadvertent (bug) or intentional (design).

Modes of Introduction

Phase	Note
Architecture and Design
Implementation

Applicable Platforms

Type	Class	Name	Prevalence
Language	Not Language-Specific

Relationships

View			Weakness
# ID	View	Status	# ID	Name	Abstraction	Structure	Status
CWE-1000	Research Concepts	Draft	CWE-203	Observable Discrepancy	Base	Simple	Incomplete

Common Attack Pattern Enumeration and Classification (CAPEC)

The Common Attack Pattern Enumeration and Classification (CAPEC™) effort provides a publicly available catalog of common attack patterns that helps users understand how adversaries exploit weaknesses in applications and other cyber-enabled capabilities.

CAPEC at Mitre.org

# ID	Name	Weaknesses
CAPEC-331	ICMP IP Total Length Field Probe	CWE-204
CAPEC-332	ICMP IP 'ID' Field Error Message Probe	CWE-204
CAPEC-541	Application Fingerprinting	CWE-204
CAPEC-580	System Footprinting	CWE-204

CVEs Published

Based on CVE published date

CVSS Severity

CVSS Severity - By Year

CVSS Base Score

# CVE	Description	CVSS	EPSS	EPSS Trend (30 days)	Affected Products	Weaknesses	Security Advisories	Exploits	PoC	Pubblication Date	Modification Date
# CVE	Description	CVSS	EPSS	EPSS Trend (30 days)	Affected Products	Weaknesses	Security Advisories	PoC	Pubblication Date	Modification Date