Description (CNA)
Zebra before 6.0.0 contains a denial of service vulnerability that allows unauthenticated peers to stall Tokio workers by submitting mempool transactions requiring expensive synchronous script verification. Attackers can send non-standard high-sigop P2SH transactions that reach CachedFfiTransaction::is_valid() before standardness checks, saturating the verifier buffer and rendering the node unresponsive.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| ZcashFoundation / zebra | affected 0 before 6.0.0; unaffected 6.0.0 |
CWE
CWE-405
References
- https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-84j3-rw4c-gqmj
- https://www.vulncheck.com/advisories/zebra-before-6.0.0-denial-of-service-via-synchronous-script-ffi-verification
ADP enrichment
No English description supplied.
No references supplied.