界: API Abuse
API 是调用方和被调用方之间的约定。最常见的 API 滥用是由于调用方未能遵守此约定的终止导致的。例如,如果某个程序在调用 chroot() 后未能调用 chdir(),则违反了用于指定如何安全地更改活动根目录的约定。库滥用的另一个典型示例是期望被调用方向调用方返回可信的 DNS 信息。在这种情况下,调用方通过对被调用方行为做出某种假设(返回值可用于身份验证目的)滥用其 API。另一方也可能违反调用方-被调用方约定。例如,如果编码器子类化 SecureRandom 并返回一个非随机值,则将违反此约定。
Code Correctness: Call to GC.Collect()
Abstract
显式的调用垃圾回收机制可以预示系统性能可能出现的问题。
Explanation
几乎所有的 .NET 开发人员都会遇到过这样的情况,有时候某个问题看上去十分蹊跷、捉摸不透,似乎只能把原因归结到垃圾回收机制上。特别是当问题与 time and state 相关时,我们可以根据经验进行推断,并找到支持这一理论的根据:插入对
在我们遇到的绝大多数情况中,调用
GC.Collect()
的调用似乎可以使问题迎刃而解。在我们遇到的绝大多数情况中,调用
GC.Collect()
并非什么好方法。事实上,过于频繁地调用 GC.Collect()
会带来性能问题。References
[1] Scott Holden The perils of GC.Collect()
[2] Rico Mariani Performance Tidbits
[3] Standards Mapping - Common Weakness Enumeration CWE ID 730
[4] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001094
[5] Standards Mapping - NIST Special Publication 800-53 Revision 4 SC-5 Denial of Service Protection (P1)
[6] Standards Mapping - NIST Special Publication 800-53 Revision 5 SC-5 Denial of Service Protection
[7] Standards Mapping - OWASP Top 10 2004 A9 Application Denial of Service
[8] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.9
[9] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP6080 CAT II
[10] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP6080 CAT II
[11] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP6080 CAT II
[12] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP6080 CAT II
[13] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP6080 CAT II
[14] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP6080 CAT II
[15] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP6080 CAT II
[16] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002400 CAT II
[17] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002400 CAT II
[18] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002400 CAT II
[19] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002400 CAT II
[20] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002400 CAT II
[21] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002400 CAT II
[22] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002400 CAT II
[23] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002400 CAT II
[24] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002400 CAT II
[25] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002400 CAT II
[26] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002400 CAT II
[27] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002400 CAT II
[28] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002400 CAT II
[29] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002400 CAT II
[30] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002400 CAT II
[31] Standards Mapping - Web Application Security Consortium Version 2.00 Denial of Service (WASC-10)
[32] Standards Mapping - Web Application Security Consortium 24 + 2 Denial of Service
desc.structural.dotnet.code_correctness_call_to_gc_collect