CVE-2022-23539

jsonwebtoken unrestricted key type could lead to legacy keys usage

Description

Versions `<=8.5.1` of `jsonwebtoken` library could be misconfigured so that legacy, insecure key types are used for signature verification. For example, DSA keys could be used with the RS256 algorithm. You are affected if you are using an algorithm and a key type other than a combination listed in the GitHub Security Advisory as unaffected. This issue has been fixed, please update to version 9.0.0. This version validates for asymmetric key type and algorithm combinations. Please refer to the above mentioned algorithm / key type combinations for the valid secure configuration. After updating to version 9.0.0, if you still intend to continue with signing or verifying tokens using invalid key type/algorithm value combinations, you’ll need to set the `allowInvalidAsymmetricKeyTypes` option to `true` in the `sign()` and/or `verify()` functions.

Category

5.9
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.09%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: auth0 node-jsonwebtoken
Published at:
Updated at:

References

Frequently Asked Questions

What is the severity of CVE-2022-23539?
CVE-2022-23539 has been scored as a medium severity vulnerability.
How to fix CVE-2022-23539?
To fix CVE-2022-23539, 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-2022-23539 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-23539 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.
What software or system is affected by CVE-2022-23539?
CVE-2022-23539 affects auth0 node-jsonwebtoken.
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