Executive Summary

Informations
Name CVE-2020-15957 First vendor Publication 2020-07-30
Vendor Cve Last vendor Modification 2020-08-05

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Overall CVSS Score 7.5
Base Score 7.5 Environmental Score 7.5
impact SubScore 3.6 Temporal Score 7.5
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact High Availability Impact None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:P/A:N)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15957

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-347 Improper Verification of Cryptographic Signature

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1

Sources (Detail)

Source Url
MISC https://github.com/dp-3T/dp3t-sdk-backend
https://github.com/DP-3T/dp3t-sdk-backend/compare/v1.0.4...v1.1.0
https://github.com/DP-3T/dp3t-sdk-backend/security/advisories/GHSA-5m5q-3qw2-...

Alert History

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Date Informations
2021-05-04 13:45:44
  • Multiple Updates
2021-04-22 02:57:46
  • Multiple Updates
2020-08-06 00:23:01
  • Multiple Updates
2020-07-30 21:23:12
  • First insertion