Authentication mechanism absence or evasion - Response tampering

Description

The OTP validation is performed according to the response of the request, an attacker can modify the response of the request to include the success message and thus continue with the flow to do the unblocking.

Impact

Skip OTP validation.

Recommendation

Set up an authentication process for every resource with business-critical functionality. Perform the pertinent validations of the critical functionalities in the back-end.

Threat

Unauthorized external attacker.

Expected Remediation Time

⌚ 90 minutes.

Score

Default score using CVSS 3.1. It may change depending on the context of the src.

Base

Attack vector: N
Attack complexity: L
Privileges required: N
User interaction: N
Scope: U
Confidentiality: N
Integrity: L
Availability: N

Temporal

Exploit code maturity: P
Remediation level: X
Report confidence: X

Result

Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:X
Score:

Base: 5.3
Temporal: 5.0

Severity:

Base: Medium
Temporal: Medium

Score 4.0

Default score using CVSS 4.0. It may change depending on the context of the src.

Base 4.0

Attack vector: N
Attack complexity: L
Attack Requirements: N
Privileges required: N
User interaction: N
Confidentiality (VC): N
Integrity (VI): L
Availability (VA): N
Confidentiality (SC): N
Integrity (SI): N
Availability (SA): N

Threat 4.0

Exploit maturity: P

Result 4.0

Vector string: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
Score:

CVSS-BT: 5.5

Severity:

CVSS-BT: Medium

Requirements

Fixes

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