CVE-2019-11636 Denial of service in n/a
An attacker can prevent real transactions in Zcash by filling all block space with cheap transactions, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-11636?
CVE-2019-11636 is a high-severity denial of service vulnerability in n/a, published on 1 May 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-254
Which versions are affected by CVE-2019-11636?
It affects 1 product.
Products include Z.cash Zcash.
How do I fix CVE-2019-11636?
No fix has been published for CVE-2019-11636 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2019-11636 being exploited?
There is no known exploitation of CVE-2019-11636 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-p5ww-mxg5-8q8m.