CWE-180: Incorrect Behavior Order: Validate Before Canonicalize

ID CWE-180

Abstraction Variant

Structure Simple

Status Draft

Number of CVEs 2

The product validates input before it is canonicalized, which prevents the product from detecting data that becomes invalid after the canonicalization step.

This can be used by an attacker to bypass the validation and launch attacks that expose weaknesses that would otherwise be prevented, such as injection.

Modes of Introduction

Phase	Note
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-179	Incorrect Behavior Order: Early Validation	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-3	Using Leading 'Ghost' Character Sequences to Bypass Input Filters	CWE-180
CAPEC-71	Using Unicode Encoding to Bypass Validation Logic	CWE-180
CAPEC-78	Using Escaped Slashes in Alternate Encoding	CWE-180
CAPEC-79	Using Slashes in Alternate Encoding	CWE-180
CAPEC-80	Using UTF-8 Encoding to Bypass Validation Logic	CWE-180
CAPEC-267	Leverage Alternate Encoding	CWE-180

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