Weaknesses in Software Written in PHP

A view in the Common Weakness Enumeration published by The MITRE Corporation.


Objective

Views in the Common Weakness Enumeration (CWE) represent one perspective with which to consider a set of weaknesses.

This view (slice) covers issues that are found in PHP programs that are not common to all languages.

Weaknesses

Comparison of Incompatible Types

The software performs a comparison between two entities, but the entities are of different, incompatible types that cannot be guaranteed to provide correct results whe...

Comparison of Object References Instead of Object Contents

The program compares object references instead of the contents of the objects themselves, preventing it from detecting equivalent objects.

Deserialization of Untrusted Data

The application deserializes untrusted data without sufficiently verifying that the resulting data will be valid.

Dynamic Variable Evaluation

In a language where the user can influence the name of a variable at runtime, if the variable names are not controlled, an attacker can read or write to arbitrary vari...

Executable Regular Expression Error

The product uses a regular expression that either (1) contains an executable component with user-controlled inputs, or (2) allows a user to enable execution by inserti...

External Initialization of Trusted Variables or Data Stores

The software initializes critical internal variables or data stores using inputs that can be modified by untrusted actors.

Externally-Generated Error Message Containing Sensitive Information

The application performs an operation that triggers an external diagnostic or error message that is not directly generated or controlled by the application, such as an...

Generation of Error Message Containing Sensitive Information

The software generates an error message that includes sensitive information about its environment, users, or associated data.

Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')

The PHP application receives input from an upstream component, but it does not restrict or incorrectly restricts the input before its usage in "require," "include," or...

Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')

The software receives input from an upstream component, but it does not neutralize or incorrectly neutralizes code syntax before using the input in a dynamic evaluatio...

Improper Neutralization of Directives in Statically Saved Code ('Static Code Injection')

The software receives input from an upstream component, but it does not neutralize or incorrectly neutralizes code syntax before inserting the input into an executable...

Improperly Controlled Modification of Dynamically-Determined Object Attributes

The software receives input from an upstream component that specifies multiple attributes, properties, or fields that are to be initialized or updated in an object, bu...

Incomplete Identification of Uploaded File Variables (PHP)

The PHP application uses an old method for processing uploaded files by referencing the four global variables that are set for each file (e.g. $varname, $varname_size,...

Insecure Default Variable Initialization

The software, by default, initializes an internal variable with an insecure or less secure value than is possible.

Null Byte Interaction Error (Poison Null Byte)

The product does not properly handle null bytes or NUL characters when passing data between different representations or components.

Omitted Break Statement in Switch

The program omits a break statement within a switch or similar construct, causing code associated with multiple conditions to execute. This can cause problems when the...

Permissive Regular Expression

The product uses a regular expression that does not sufficiently restrict the set of allowed values.

PHP External Variable Modification

A PHP application does not properly protect against the modification of variables from external sources, such as query parameters or cookies. This can expose the appli...

Unrestricted Upload of File with Dangerous Type

The software allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment.

Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')

The application uses external input with reflection to select which classes or code to use, but it does not sufficiently prevent the input from selecting improper clas...

Use of Function with Inconsistent Implementations

The code uses a function that has inconsistent implementations across operating systems and versions.

Use of Uninitialized Variable

The code uses a variable that has not been initialized, leading to unpredictable or unintended results.

Variable Extraction Error

The product uses external input to determine the names of variables into which information is extracted, without verifying that the names of the specified variables ar...


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