CWE-551—Incorrect Behavior Order: Authorization Before Parsing and Canonicalization

名称

Incorrect Behavior Order: Authorization Before Parsing and Canonicalization

描述

If a web server does not fully parse requested URLs before it examines them for authorization, it may be possible for an attacker to bypass authorization protection.

For instance, the character strings /./ and / both mean current directory. If /SomeDirectory is a protected directory and an attacker requests /./SomeDirectory, the attacker may be able to gain access to the resource if /./ is not converted to / before the authorization check is performed.

常见后果

范围：

Access Control

影响：

Bypass Protection Mechanism

相关 CWE

• CWE-41Improper Resolution of Path Equivalence
• CWE-696Incorrect Behavior Order
• CWE-863Incorrect AuthorizationHigh