CWE-342 从先前值可预测准确值

admin 2022年1月2日04:08:58CWE(弱点枚举)评论22 views1655字阅读5分31秒阅读模式

CWE-342 从先前值可预测准确值

Predictable Exact Value from Previous Values

结构: Simple

Abstraction: Base

状态: Draft

被利用可能性: unkown

基本描述

An exact value or random number can be precisely predicted by observing previous values.

相关缺陷

  • cwe_Nature: ChildOf cwe_CWE_ID: 330 cwe_View_ID: 1000 cwe_Ordinal: Primary

  • cwe_Nature: ChildOf cwe_CWE_ID: 330 cwe_View_ID: 699 cwe_Ordinal: Primary

适用平台

Language: {'cwe_Class': 'Language-Independent', 'cwe_Prevalence': 'Undetermined'}

常见的影响

范围 影响 注释
Other Varies by Context

可能的缓解方案

策略:

Increase the entropy used to seed a PRNG.

MIT-2 ['Architecture and Design', 'Requirements']

策略: Libraries or Frameworks

Use products or modules that conform to FIPS 140-2 [REF-267] to avoid obvious entropy problems. Consult FIPS 140-2 Annex C ("Approved Random Number Generators").

MIT-50 Implementation

策略:

Use a PRNG that periodically re-seeds itself using input from high-quality sources, such as hardware devices with high entropy. However, do not re-seed too frequently, or else the entropy source might block.

分析过的案例

标识 说明 链接
CVE-2002-1463 Firewall generates easily predictable initial sequence numbers (ISN), which allows remote attackers to spoof connections. https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2002-1463
CVE-1999-0074 Listening TCP ports are sequentially allocated, allowing spoofing attacks. https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-1999-0074
CVE-1999-0077 Predictable TCP sequence numbers allow spoofing. https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-1999-0077
CVE-2000-0335 DNS resolver uses predictable IDs, allowing a local user to spoof DNS query results. https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2000-0335

分类映射

映射的分类名 ImNode ID Fit Mapped Node Name
PLOVER Predictable Exact Value from Previous Values

引用

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  • 本文由 发表于 2022年1月2日04:08:58
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