CVE-2023-33242

Lindell17 TSS Abort Mishandling

Critical · published August 9, 2023

CVSS v3.1
9.6
EPSS
2%
Percentile
74.2
In the wild
Unconfirmed
What it is

🚨 One tiny bit at a time can expose your entire crypto wallet! A flaw in wallets using the Lindell17 TSS protocol lets an attacker siphon off pieces of your ECDSA private key with every failed signature attempt. 🔥 Think of it like a bank vault that only requires a sliver of information from you each time you approach it; with enough visits, the thief can piece together the combination. Each signature attempt is like a small leak, slowly draining the vault's security until it's wide open! If exploited, an attacker could completely capture your ECDSA private key, gaining full access to your crypto assets! This means they could drain your wallet, steal your investments, and leave you with an empty account — absolutely devastating!

Put simply

Think of it like a bank vault that only requires a sliver of information from you each time you approach it; with enough visits, the thief can piece together the combination. Each signature attempt is like a small leak, slowly draining the vault's security until it's wide open! The vulnerability arises from wallets not adhering to the Lindell17 TSS protocol's assumptions about abort handling after failed signature attempts, allowing attackers to exfiltrate critical bits of the private key in 256 attempts.

What to do

If exploited, an attacker could completely capture your ECDSA private key, gaining full access to your crypto assets! This means they could drain your wallet, steal your investments, and leave you with an empty account — absolutely devastating! Immediately investigate if your crypto wallet is using the vulnerable Lindell17 TSS protocol, and apply any patches or updates provided by the wallet developers. Strengthen your security practices by reviewing your wallet's failure handling methods and consider switching to an alternative implementation if necessary. You've got this! By taking swift action, you can protect your crypto assets and reinforce your security hero status! 🛡️

The record
Technical detail
CVSS v3.1
9.6 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.01506 · 74.2th percentile
Published
2023-08-09T21:01Z
EPSS history
Timeline
  • 09 AUG 21:01Z
    Lindell17 TSS Abort Mishandling
    cvelistv5