CWE-138: Improper Neutralization of Special Elements

ID CWE-138
Abstraction Class
Structure Simple
Status Draft
Number of CVEs 9
The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could be interpreted as control elements or syntactic markers when they are sent to a downstream component.

Most languages and protocols have their own special elements such as characters and reserved words. These special elements can carry control implications. If product does not prevent external control or influence over the inclusion of such special elements, the control flow of the program may be altered from what was intended. For example, both Unix and Windows interpret the symbol < ("less than") as meaning "read input from a file".

Modes of Introduction

Phase Note
Implementation REALIZATION: This weakness is caused during implementation of an architectural security tactic.

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-707 Improper Neutralization Pillar Simple Incomplete

Common Attack Pattern Enumeration and Classification (CAPEC)

The Common Attack Pattern Enumeration and Classification (CAPECâ„¢) 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-15 Command Delimiters CWE-138
CAPEC-34 HTTP Response Splitting CWE-138
CAPEC-105 HTTP Request Splitting CWE-138

CVEs Published

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
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