Vulnerability in Zclassic Z-Nomp
CVE-2018-10831
Z-NOMP before 2018-04-05 has an incorrect Equihash solution verifier that allows attackers to spoof mining shares, as demonstrated by providing a solution with {x1=1,x2=1,x3=1,...,x512=1} to bypass this verifier for any blockheader. This originally affected (for example) the Bitcoin Gold and Zcash cryptocurrencies, and continued to be exploited in the wild in May 2018 against smaller cryptocurrencies.
Vulnerability class: POODLE (CVE-2014-3566)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.007 (51.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: -0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/edwardz246003/misc/blob/master/Attackers Fake Computational Power to… (Technical Description, Exploit, Third Party Advisory)
- blog.zencash.com/update-for-the-equihash-mining-application-z-nomp/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2018-10831?
- CVE-2018-10831 is a high-severity vulnerability in Zclassic Z-Nomp, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 7.5/10. Published 2018-05-09.
- How severe is CVE-2018-10831?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2018-10831 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.