Variant · Low-Medium

CWE-546: Suspicious Comment

The code contains comments that suggest the presence of bugs, incomplete functionality, or weaknesses.

CWE-546 · Variant Level ·1 Mitigations

Description

The code contains comments that suggest the presence of bugs, incomplete functionality, or weaknesses.

Many suspicious comments, such as BUG, HACK, FIXME, LATER, LATER2, TODO, in the code indicate missing security functionality and checking. Others indicate code problems that programmers should fix, such as hard-coded variables, error handling, not using stored procedures, and performance issues.

Potential Impact

Other

Quality Degradation

Demonstrative Examples

The following excerpt demonstrates the use of a suspicious comment in an incomplete code block that may have security repercussions.
Bad
if (user == null) {
                        
                           
                           // TODO: Handle null user condition.
                           
                        
                     }

Mitigations & Prevention

Documentation

Remove comments that suggest the presence of bugs, incomplete functionality, or weaknesses, before deploying the application.

Detection Methods

  • Automated Static Analysis — Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then sea

Frequently Asked Questions

What is CWE-546?

CWE-546 (Suspicious Comment) is a software weakness identified by MITRE's Common Weakness Enumeration. It is classified as a Variant-level weakness. The code contains comments that suggest the presence of bugs, incomplete functionality, or weaknesses.

How can CWE-546 be exploited?

Attackers can exploit CWE-546 (Suspicious Comment) to quality degradation. This weakness is typically introduced during the Implementation phase of software development.

How do I prevent CWE-546?

Key mitigations include: Remove comments that suggest the presence of bugs, incomplete functionality, or weaknesses, before deploying the application.

What is the severity of CWE-546?

CWE-546 is classified as a Variant-level weakness (Low-Medium abstraction). Its actual severity depends on the specific context and how the weakness manifests in your application.