Vulnerability Description
Zcash 2.x allows an inexpensive approach to "fill all transactions of all blocks" and "prevent any real transaction from occurring" via a "Sapling Wood-Chipper" attack.
CVSS Score
7.5
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Z.Cash | Zcash | >= 2.0.0, <= 2.0.4 |
Related Weaknesses (CWE)
References
- https://github.com/zcash/zcash/issues/3955Third Party Advisory
- https://saplingwoodchipper.github.io
- https://twitter.com/dukeleto/status/1120467430118232066Third Party Advisory
- https://github.com/zcash/zcash/issues/3955Third Party Advisory
- https://saplingwoodchipper.github.io
- https://twitter.com/dukeleto/status/1120467430118232066Third Party Advisory
FAQ
What is CVE-2019-11636?
CVE-2019-11636 is a vulnerability with a CVSS score of 7.5 (HIGH). Zcash 2.x allows an inexpensive approach to "fill all transactions of all blocks" and "prevent any real transaction from occurring" via a "Sapling Wood-Chipper" attack.
How severe is CVE-2019-11636?
CVE-2019-11636 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-11636?
Check the references section above for vendor advisories and patch information. Affected products include: Z.Cash Zcash.