What is CVE-2020-15957?

CVE-2020-15957 is a high-severity vulnerability in Dp3t-Backend-Software Development Kit Project, classified under Improper Verification of Cryptographic Signature. CVSS score: 7.5/10. Published 2020-07-30.

How severe is CVE-2020-15957?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Dp3t-Backend-Software Development Kit Project

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.

EPSS: 0.016 (72.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

Affected products

Dp3t-backend-software_development_kit_project Dp3t-backend-software_development_kit
N/a — versions n/a

Weakness classification (CWE)

CWE-347 — Improper Verification of Cryptographic Signature

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Third Party Advisory, x_refsource_MISC, Release Notes)
cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-15957?: CVE-2020-15957 is a high-severity vulnerability in Dp3t-Backend-Software Development Kit Project, classified under Improper Verification of Cryptographic Signature. CVSS score: 7.5/10. Published 2020-07-30.
How severe is CVE-2020-15957?: High severity. CVSS v3 base score is 7.5 out of 10.