Description
Zebra zebrad before 7.0.0 contains a denial of service vulnerability that allows a malicious peer to stall checkpoint sync by cancelling the verifier rewind after a failed commit. Attackers can serve a forged block with altered authorizing data plus a restart-triggering block, leaving the verifier rejecting honest blocks until restart.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| ZcashFoundation | zebra | < 7.0.0 | 7.0.0 |
References
- GitHub Security Advisory (GHSA-2w9f-9wx8-f5c8) vendor-advisory
- VulnCheck Advisory: Zebra before 7.0.0 Checkpoint Sync Denial of Service via Cancelled Verifier Rewind third-party-advisory