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GHSA-84c3-j8r2-mcm8
No affected components available
Problem
User sessions in the @nfid/embed SDK with Ed25519 keys are vulnerable due to a compromised private key 535yc-uxytb-gfk7h-tny7p-vjkoe-i4krp-3qmcl-uqfgr-cpgej-yqtjq-rqe. This exposes users to potential loss of funds on ledgers and unauthorized access to canisters they control.
Solution
Using version >1.0.1 of @dfinity/auth-client and @dfinity/identity packages, or @nfid/embed >0.10.1-alpha.6 includes patched versions of the issue.
User sessions will be automatically fixed when they re-authenticate.
Why this happened
The DFINITY auth client library provides a function, Ed25519KeyIdentity.generate, for generating an Ed25519 key pair. This function includes an optional parameter to supply a 32-byte seed value, which will be utilized as the secret key. In cases where no seed value is provided, the library is expected to generate the secret key using secure randomness. However, a recent update of DFINITY libraries has compromised this assurance by employing an insecure seed for key pair generation.
References
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data.
Exploitation activity has been observed. Apply available patches or mitigations urgently.
Probability that this vulnerability will be exploited in the wild within the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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