Vulnerability DatabaseWS-2019-0187
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WS-2019-0187
July 22, 2019
otpauth before 3.2.8 is vulnerable to Authentication Bypass. The function totp.validate() may return positive values for single digit tokens even if they are invalid. This may allow attackers to bypass the OTP authentication by providing single digit tokens.
Related Resources (2)
https://github.com/hectorm/otpauth/commit/662ee16acfd92571a86e3efeeefff246abe8be78,https://github.com/hectorm/otpauth/commit/ae89817972ea5ee544dd2f567657acad4d1bb048
https://github.com/hectorm/otpauth/compare/v3.2.7...v3.2.8
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CVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE