CVE Vulnerability

CVE-2019-7167

Zcash, before the Sapling network upgrade (2018-10-28), had a counterfeiting vulnerability. A key-generation process, during evaluation of polynomials related to a to-be-proven statement, produced certain bypass elements. Availability of these elements allowed a cheating prover to bypass a consistency check, and consequently transform the proof of one statement into an ostensibly valid proof of a different statement, thereby breaking the soundness of the proof system. This misled the original Sprout zk-SNARK verifier into accepting the correctness of a transaction.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://z.cash/blog/zcash-counterfeiting-vulnerability-successfully-remediated/ Vendor Advisory
http://fortune.com/2019/02/05/zcash-vulnerability-cryptocurrency/ Press/Media Coverage Third Party Advisory
https://github.com/JinBean/CVE-Extension
Configurations

Configuration 1

cpe:2.3:a:z.cash:zcash:*:*:*:*:*:*:*:*
Information

Published : 2019-03-27 02:29

Updated : 2020-08-24 05:37

NVD link : CVE-2019-7167

Mitre link : CVE-2019-7167

Products Affected
No products.
CWE
CWE-754