CWE-179: Incorrect Behavior Order: Early Validation

ID CWE-179

Abstraction Base

Structure Simple

Status Incomplete

Number of CVEs 2

The product validates input before applying protection mechanisms that modify the input, which could allow an attacker to bypass the validation via dangerous inputs that only arise after the modification.

Product needs to validate data at the proper time, after data has been canonicalized and cleansed. Early validation is susceptible to various manipulations that result in dangerous inputs that are produced by canonicalization and cleansing.

Modes of Introduction

Phase	Note
Implementation	Since early validation errors usually arise from improperly implemented defensive mechanisms, it is likely that these will be introduced more frequently as secure programming becomes implemented more widely.

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-20	Improper Input Validation	Class	Simple	Stable
CWE-1000	Research Concepts	Draft	CWE-696	Incorrect Behavior Order	Class	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-179
CAPEC-43	Exploiting Multiple Input Interpretation Layers	CWE-179
CAPEC-71	Using Unicode Encoding to Bypass Validation Logic	CWE-179

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