CVE-2019-7167 Other in n/a
A flaw in Zcash's Sprout zk-SNARK verifier allowed attackers to forge valid proofs for invalid transactions, enabling counterfeiting.
- 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-2019-7167?
CVE-2019-7167 is a high-severity vulnerability in n/a, published on 27 Mar 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-754
Which versions are affected by CVE-2019-7167?
It affects 1 product.
Products include Z.cash Zcash.
How do I fix CVE-2019-7167?
No fix has been published for CVE-2019-7167 yet. Limit exposure of the affected software until one is available.
Is CVE-2019-7167 being exploited?
There is no known exploitation of CVE-2019-7167 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-q567-c5xf-8xjf.