CVE Vulnerability

CVE-2020-15957

An issue was discovered in DP3T-Backend-SDK before 1.1.1 for Decentralised Privacy-Preserving Proximity Tracing (DP3T). When it is configured to check JWT before uploading/publishing keys, it is possible to skip the signature check by providing a JWT token with alg=none.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/DP-3T/dp3t-sdk-backend/compare/v1.0.4...v1.1.0 Release Notes Third Party Advisory
https://github.com/DP-3T/dp3t-sdk-backend/security/advisories/GHSA-5m5q-3qw2-3xf3 Patch Third Party Advisory
https://github.com/dp-3T/dp3t-sdk-backend Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:dp3t-backend-software_development_kit_project:dp3t-backend-software_development_kit:*:*:*:*:*:*:*:*
Information

Published : 2020-07-30 02:15

Updated : 2020-08-05 06:47

NVD link : CVE-2020-15957

Mitre link : CVE-2020-15957

Products Affected
No products.
CWE
CWE-347

Improper Verification of Cryptographic Signature