PingFederate using the PingOne MFA adapter allows a new MFA device to be paired without requiring second factor authentication from an existing registered device. A threat actor may be able to exploit this vulnerability to register their own MFA device if they have knowledge of a victim user's first factor credentials.

References

• https://nvd.nist.gov/vuln/detail/CVE-2023-39231
• https://docs.pingidentity.com/r/en-us/pingfederate-pingone-mfa-ik/bks1657303194394
• https://www.pingidentity.com/en/resources/downloads/pingid.html