CVE-2023-33242 Lindell17 TSS Abort Mishandling
Attackers can extract full ECDSA private keys from crypto wallets by exploiting improper abort handling in Lindell17 TSS implementations.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-33242?
CVE-2023-33242 is a critical vulnerability in Lindell TSS Implementations Wallet, published on 9 Aug 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Crypto wallets implementing the Lindell17 TSS protocol might allow an attacker to extract the full ECDSA private key by exfiltrating a single bit in every signature attempt (256 in total) because of not adhering to the paper's security proof's assumption regarding handling aborts after a failed signature.
Weakness: CWE-74
Which versions are affected by CVE-2023-33242?
It affects 1 product.
Products include Lindell17 Project Lindell17.
How do I fix CVE-2023-33242?
No fix has been published for CVE-2023-33242 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-33242 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-33242 exists.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-7rw5-c532-37cv.