Vulnerability Details : CVE-2019-11636
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.
Products affected by CVE-2019-11636
- cpe:2.3:a:z.cash:zcash:*:*:*:*:*:*:*:*
- cpe:2.3:a:z.cash:zcash:2.0.5:rc1:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-11636
0.40%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 58 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-11636
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2019-11636
-
Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-11636
-
https://github.com/zcash/zcash/issues/3955
Denial of Service · Issue #3955 · zcash/zcash · GitHubThird Party Advisory
-
https://saplingwoodchipper.github.io
Sapling Woodchipper CVE-2019-11636 | saplingwoodchipper.github.io
-
https://twitter.com/dukeleto/status/1120467430118232066
Duke Leto on Twitter: "Zcash has ~450 million USD marketcap, but it would only cost ~1/20th $ZEC ($4/day) to fill all blocks and stop all real transactions on it. No bug bounty program, because devs aThird Party Advisory
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