Security Features in Zcash



Published: 2019-05-01 | Updated: 2020-08-08
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-11636
CWE-ID CWE-254
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		Zcash
Client/Desktop applications / Other client software

Vendor Electric Coin Co.

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Security Features

EUVDB-ID: #VU35945

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11636

CWE-ID: CWE-254 - Security Features

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Zcash: 2.0.5

External links

http://github.com/zcash/zcash/issues/3955
http://saplingwoodchipper.github.io
http://twitter.com/dukeleto/status/1120467430118232066


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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