CVE-2023-33242 - CVE House
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Status published Critical CVE-2023-33242

Lindell17 TSS Abort Mishandling

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Fireblocks Research, Nikolaos Makriyannis, Oren Yomtov

References

Affected Vendor

Lindell TSS Implementations

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Affected Software

Wallet
Vulnerable Versions:
17

Timeline

Official Publish: August 9th, 2023
Last Modified: October 10th, 2024
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.