Description (CNA)
Zebra (zebrad) 4.5.0 before 6.3.0 discards which peer supplied the block hashes in FindBlocks responses, then assigns 100 misbehavior points, the ban threshold, to whichever peer serves a requested block more than 50,000 heights above the tip. A remote peer can return real far-ahead hashes to a syncing node so that honest peers get banned, eroding its peer set and raising eclipse risk.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| ZcashFoundation / zebra | affected 0 before 6.3.0; unaffected 6.3.0 |
CWE
CWE-345
References
- https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-qhr3-cvch-5fh2
- https://www.vulncheck.com/advisories/zebra-before-6.3.0-honest-peer-banning-via-far-ahead-findblocks-hashes
ADP enrichment
No English description supplied.
No references supplied.