CWE-834 过度迭代

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所属分类:CWE(弱点枚举)

CWE-834 过度迭代

Excessive Iteration

结构: Simple

Abstraction: Class

状态: Incomplete

被利用可能性: unkown

基本描述

The software performs an iteration or loop without sufficiently limiting the number of times that the loop is executed.

扩展描述

If the iteration can be influenced by an attacker, this weakness could allow attackers to consume excessive resources such as CPU or memory. In many cases, a loop does not need to be infinite in order to cause enough resource consumption to adversely affect the software or its host system; it depends on the amount of resources consumed per iteration.

相关缺陷

  • cwe_Nature: ChildOf cwe_CWE_ID: 691 cwe_View_ID: 1000 cwe_Ordinal: Primary

常见的影响

范围 影响 注释
Availability ['DoS: Resource Consumption (CPU)', 'DoS: Resource Consumption (Memory)', 'DoS: Amplification', 'DoS: Crash, Exit, or Restart'] Excessive looping will cause unexpected consumption of resources, such as CPU cycles or memory. The software's operation may slow down, or cause a long time to respond. If limited resources such as memory are consumed for each iteration, the loop may eventually cause a crash or program exit due to exhaustion of resources, such as an out-of-memory error.

检测方法

Dynamic Analysis with Manual Results Interpretation

According to SOAR, the following detection techniques may be useful:

Cost effective for partial coverage:
  • Fuzz Tester
  • Framework-based Fuzzer
  • Forced Path Execution

Manual Static Analysis - Source Code

According to SOAR, the following detection techniques may be useful:

Cost effective for partial coverage:
  • Focused Manual Spotcheck - Focused manual analysis of source
  • Manual Source Code Review (not inspections)

Automated Static Analysis - Source Code

According to SOAR, the following detection techniques may be useful:

Highly cost effective:
  • Context-configured Source Code Weakness Analyzer

Architecture or Design Review

According to SOAR, the following detection techniques may be useful:

Highly cost effective:
  • Inspection (IEEE 1028 standard) (can apply to requirements, design, source code, etc.)

引用

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