CVE-2021-32631

JSON Web Tokens not properly verified

CVSS 6.5 MEDIUMEPSS 1.1%CWE-290

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6.5EPSS 1.1%KEV nãoPoC —Patch —

Lifecycle

26 Jul 2021Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

Common is a package of common modules that can be accessed by NIMBLE services. Common before commit number 3b96cb0293d3443b870351945f41d7d55cb34b53 did not properly verify the signature of JSON Web Tokens. This allows someone to forge a valid JWT. Being able to forge JWTs may lead to authentication bypasses. Commit number 3b96cb0293d3443b870351945f41d7d55cb34b53 contains a patch for the issue. As a workaround, one may use the parseClaimsJws method to correctly verify the signature of a JWT.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Affected products

nimble-platform · common

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References

https://github.com/nimble-platform/common/commit/12197a755bd524559bf4e16475595a2c6fcd34db https://github.com/nimble-platform/common/commit/3b96cb0293d3443b870351945f41d7d55cb34b53 https://github.com/nimble-platform/common/commit/a59ad46733912a5580530e39cac0e6ebc83cc563 https://github.com/nimble-platform/common/security/advisories/GHSA-fjq8-896w-pv28