Lack of data validation - Token

Description

The generated JWT access token does not validate if the signature is valid so the token can be modified and requests are accepted; even removing the signature from the token works.

Impact

- Generate tokens by bypassing existing mechanisms.
- Modify tokens allowing requests to be sent outside the application cycle.

Recommendation

Generate a token with random components without sensitive information and always validate that the integrity of the token is maintained (signature verification, signature).

Threat

Unauthorized attacker with access to a token.

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: H
Privileges required: N
User interaction: N
Scope: U
Confidentiality: N
Integrity: L
Availability: N

Temporal

Exploit code maturity: U
Remediation level: U
Report confidence: C

Result

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

Base: 3.7
Temporal: 3.4

Severity:

Base: Low
Temporal: Low

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: H
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: U

Result 4.0

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

CVSS-BT: 1.7

Severity:

CVSS-BT: Low

Requirements

Fixes

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