Description (CNA)
Zebra before 6.3.0 contains an improper exceptional condition check in ChainSync::obtain_tips that discards valid one-hash FindBlocks responses, falsely reporting close-to-tip status. Peers returning only the next block hash cause a zero-length sync sample, making the /ready endpoint return 200 OK while the node remains behind the tip.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| ZcashFoundation / zebra | affected 0 before 6.3.0; unaffected 6.3.0 |
CWE
CWE-754
References
- https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-h8m8-844p-v3m9
- https://www.vulncheck.com/advisories/zebra-before-6.3.0-false-readiness-via-discarded-one-hash-findblocks-response
ADP enrichment
No English description supplied.
No references supplied.