ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.3.0 and zebra-chain version 6.0.1, a vulnerability in Zebra's transaction processing logic allows a remote, unauthenticated attacker to cause a Zebra node to panic (crash). This is triggered by sending a specially crafted V5 transaction that passes initial deserialization but fails during transaction ID calculation.
This issue has been patched in zebrad version 4.3.0 and zebra-chain version 6.0.1.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 2
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Zfnd Zebra
cpe:2.3:a:zfnd:zebra:*:*:*:*:*:rust:*:*
|
— |
4.3.0
|
|
Zfnd Zebra-Chain
cpe:2.3:a:zfnd:zebra-chain:*:*:*:*:*:rust:*:*
|
— |
6.0.1
|
References 3
https://github.com/ZcashFoundation/zebra/releases/tag/v4.3.0
security-advisories@github.com
https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-qp6f-w4r3-h8wg
security-advisories@github.com
https://zfnd.org/zebra-4-3-0-critical-security-fixes-zip-235-support-and-perfor…
security-advisories@github.com