Vulnerability in Gg18 Project
CVE-2023-33241
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.012 (66.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 66.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
- Gg18 Project
- Gg20 Project
- Gg Tss Implementations Wallet — versions 18, 20
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.fireblocks.com/blog/gg18-and-gg20-paillier-key-vulnerability-technical-repo… (Third Party Advisory)
- github.com/fireblocks-labs/mpc-ecdsa-attacks-23 (Exploit)
- github.com/fireblocks-labs/safeheron-gg20-exploit-poc (Exploit)
- eprint.iacr.org/2019/114.pdf (Exploit, Third Party Advisory)
- eprint.iacr.org/2020/540.pdf (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-33241?
- CVE-2023-33241 is a critical-severity vulnerability in Gg18 Project, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 9.6/10. Published 2023-08-09.
- How severe is CVE-2023-33241?
- Critical severity. CVSS v3 base score is 9.6 out of 10.
- Is CVE-2023-33241 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.