Description (CNA)
Zebra before 6.2.1 contains an incomplete cleanup vulnerability that allows unauthenticated peers to block downloading of valid blocks by leaving rejected hashes in SentHashes. Attackers can send a contextually invalid block sharing an honest block's header hash, causing Request::KnownBlock to skip the honest block and keep nodes behind the tip.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| ZcashFoundation / zebra | affected 0 before 6.2.1; unaffected 6.2.1 |
CWE
CWE-459
References
- https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-x93j-mj2f-q338
- https://www.vulncheck.com/advisories/zebra-before-6.2.1-block-download-denial-of-service-via-knownblock-senthashes-lockout
ADP enrichment
No English description supplied.
No references supplied.