A vulnerability classified as critical has been found in Yubico YubiKey (the affected version unknown). This affects an unknown part of the component OTP. The manipulation with an unknown input leads to a privilege escalation vulnerability. CWE is classifying the issue as CWE-284. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Incorrect access control in Yubico OTP functionality of the YubiKey hardware tokens along with the Yubico OTP validation server. The Yubico OTP supposedly creates hardware bound second factor credentials. When a user reprograms the OTP functionality by "writing" it on a token using the Yubico Personalization Tool, they can then upload the new configuration to Yubicos OTP validation servers.

The weakness was shared 05/12/2022. The advisory is shared at pastebin.com. This vulnerability is uniquely identified as CVE-2022-24584 since 02/07/2022. The exploitability is told to be difficult. The attack needs to be done within the local network. A authentication is necessary for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/14/2022). MITRE ATT&CK project uses the attack technique T1068 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Vendor

• Yubico

Name

• YubiKey

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