CWE-95 - Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
- Abstraction:Variant
- Structure:Simple
- Status:Incomplete
- Release Date:2006-07-19
- Latest Modification Date:2024-07-16
Weakness Name
Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
Description
The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes code syntax before using the input in a dynamic evaluation call (e.g. "eval").
This may allow an attacker to execute arbitrary code, or at least modify what code can be executed.
Common Consequences
Scope: Confidentiality
Impact: Read Files or Directories, Read Application Data
Notes: The injected code could access restricted data / files.
Scope: Access Control
Impact: Bypass Protection Mechanism
Notes: In some cases, injectable code controls authentication; this may lead to a remote vulnerability.
Scope: Access Control
Impact: Gain Privileges or Assume Identity
Notes: Injected code can access resources that the attacker is directly prevented from accessing.
Scope: Integrity, Confidentiality, Availability, Other
Impact: Execute Unauthorized Code or Commands
Notes: Code injection attacks can lead to loss of data integrity in nearly all cases as the control-plane data injected is always incidental to data recall or writing. Additionally, code injection can often result in the execution of arbitrary code.
Scope: Non-Repudiation
Impact: Hide Activities
Notes: Often the actions performed by injected control code are unlogged.
