CWE-917—Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')

名称

Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')

描述

The product constructs all or part of an expression language (EL) statement in a framework such as a Java Server Page (JSP) using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended EL statement before it is executed.

Frameworks such as Java Server Page (JSP) allow a developer to insert executable expressions within otherwise-static content. When the developer is not aware of the executable nature of these expressions and/or does not disable them, then if an attacker can inject expressions, this could lead to code execution or other unexpected behaviors.

常见后果

范围：

Confidentiality

影响：

Read Application Data

范围：

Integrity

影响：

Execute Unauthorized Code or Commands

相关 CWE

• CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')High
• CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')High
• CWE-1336Improper Neutralization of Special Elements Used in a Template Engine

相关警报

• Expression Language InjectionHigh