CWE-606: Unchecked Input for Loop Condition
Learn about CWE-606 (Unchecked Input for Loop Condition), its security impact, exploitation methods, and prevention guidelines.
What is Unchecked Input for Loop Condition?
• Overview: Unchecked Input for Loop Condition occurs when software fails to validate inputs used to control loop execution, leading to potential excessive looping and resource exhaustion.
• Exploitation Methods:
- Attackers can provide malicious or malformed input to trigger infinite or excessively long loops.
- Common techniques include inputting large values or crafted inputs that create unintended loop execution paths.
• Security Impact:
- Direct consequences include denial of service due to system unresponsiveness.
- Potential cascading effects involve resource depletion, affecting other processes or services.
- Business impact includes reduced service availability, potential loss of revenue, and damage to reputation.
• Prevention Guidelines:
- Implement input validation to ensure loop control variables fall within expected and safe ranges.
- Use security best practices such as input sanitization and bounds checking.
- Recommended tools and frameworks include static analysis tools to detect improper input handling and modern language features that enforce safe loop constructs.
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Technical Details
Likelihood of Exploit: Not specified
Affected Languages: Not specified
Affected Technologies: Not specified