Vulnerability in Auth0 Jsonwebtoken
CVE-2022-23539
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.
Vulnerability class: POODLE (CVE-2014-3566)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N.
EPSS exploit prediction
EPSS: 0.005 (38.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 38.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Auth0 Jsonwebtoken
- Auth0 Node-Jsonwebtoken — versions <= 8.5.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/auth0/node-jsonwebtoken/security/advisories/GHSA-8cf7-32gw-wr33 (Third Party Advisory)
- github.com/auth0/node-jsonwebtoken/commit/e1fa9dcc12054a8681db4e6373da1b30cf701… (Patch, Third Party Advisory)
- security.netapp.com/advisory/ntap-20240621-0007/
Frequently asked questions
- What is CVE-2022-23539?
- CVE-2022-23539 is a medium-severity vulnerability in Auth0 Jsonwebtoken, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 5.9/10. Published 2022-12-23.
- How severe is CVE-2022-23539?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2022-23539 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.