CVEvulnerability
CVE-2023-33241
9.1 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2023-08-09
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 9.6 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
- CVSS 3.1 ([email protected])
- 9.1 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- Weaknesses
- CWE-74
Description
Crypto wallets implementing the GG18 or GG20 TSS protocol might allow an attacker to extract a full ECDSA private key by injecting a malicious pallier key and cheating in the range proof. Depending on the Beta parameters chosen in the protocol implementation, the attack might require 16 signatures or more fully exfiltrate the other parties' private key shares.
Affected configurations
• gg18 project gg18
• gg20 project gg20
Related
Weakness · CWE (1)
- CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component weakness
References
- https://eprint.iacr.org/2019/114.pdf Exploit, Third Party Advisory
- https://eprint.iacr.org/2020/540.pdf Exploit, Third Party Advisory
- https://github.com/fireblocks-labs/mpc-ecdsa-attacks-23 Exploit
- https://github.com/fireblocks-labs/safeheron-gg20-exploit-poc Exploit
- https://www.fireblocks.com/blog/gg18-and-gg20-paillier-key-vulnerability-technical-report/ Third Party Advisory
- https://eprint.iacr.org/2019/114.pdf Exploit, Third Party Advisory
- https://eprint.iacr.org/2020/540.pdf Exploit, Third Party Advisory
- https://github.com/fireblocks-labs/mpc-ecdsa-attacks-23 Exploit
- https://github.com/fireblocks-labs/safeheron-gg20-exploit-poc Exploit
- https://www.fireblocks.com/blog/gg18-and-gg20-paillier-key-vulnerability-technical-report/ Third Party Advisory