CWE-208 通过时间差异性导致的信息暴露

Information Exposure Through Timing Discrepancy

结构: Simple

Abstraction: Base

状态: Incomplete

被利用可能性: unkown

基本描述

Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not.

相关缺陷

• cwe_Nature: ChildOf cwe_CWE_ID: 203 cwe_View_ID: 1000 cwe_Ordinal: Primary

• cwe_Nature: ChildOf cwe_CWE_ID: 203 cwe_View_ID: 699 cwe_Ordinal: Primary

• cwe_Nature: CanPrecede cwe_CWE_ID: 327 cwe_View_ID: 1000

适用平台

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

常见的影响

范围	影响	注释
['Confidentiality', 'Access Control']	['Read Application Data', 'Bypass Protection Mechanism']

分析过的案例

标识	说明	链接
CVE-2003-0078	SSL implementation does not perform a MAC computation if an incorrect block cipher padding is used, which causes an information leak (timing discrepancy) that may make it easier to launch cryptographic attacks that rely on distinguishing between padding and MAC verification errors, possibly leading to extraction of the original plaintext, aka the "Vaudenay timing attack."	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2003-0078
CVE-2000-1117	Virtual machine allows malicious web site operators to determine the existence of files on the client by measuring delays in the execution of the getSystemResource method.	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2000-1117
CVE-2003-0637	Product uses a shorter timeout for a non-existent user than a valid user, which makes it easier for remote attackers to guess usernames and conduct brute force password guessing.	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2003-0637
CVE-2003-0190	Product immediately sends an error message when a user does not exist, which allows remote attackers to determine valid usernames via a timing attack.	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2003-0190
CVE-2004-1602	FTP server responds in a different amount of time when a given username exists, which allows remote attackers to identify valid usernames by timing the server response.	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-1602
CVE-2005-0918	Browser allows remote attackers to determine the existence of arbitrary files by setting the src property to the target filename and using Javascript to determine if the web page immediately stops loading, which indicates whether the file exists or not.	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-0918

Notes

分类映射

映射的分类名	ImNode ID	Fit	Mapped Node Name
PLOVER			Timing discrepancy infoleak

相关攻击模式

• CAPEC-462

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