CVE-2023-33242

Lindell17 TSS Abort Mishandling

HIGH
8.1
CVSS Score
Published: August 9, 2023 at 09:01 PM UTC
Updated: June 17, 2026 at 06:01 AM UTC
2 products affected across 2 vendorsLINDELL17Project LINDELL17

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Severity
HIGH8.1
Exploit prediction
EPSS 2%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-74

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