CVE-2020-15957

Description

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.19%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/dp-3T/dp3t-sdk-backend third party advisory
https://github.com/DP-3T/dp3t-sdk-backend/compare/v1.0.4...v1.1.0 third party advisory release notes
https://github.com/DP-3T/dp3t-sdk-backend/security/advisories/GHSA-5m5q-3qw2-3xf3 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2020-15957?
CVE-2020-15957 has been scored as a high severity vulnerability.
How to fix CVE-2020-15957?
To fix CVE-2020-15957, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-15957 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-15957 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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