NRDAX-T0417 - Malformed RLP Field-Length Panic

Fault termination · P2P and gossip · absent invariant · active · first seen 2026-07-21

provenance: Reproduced in NullRabbit's attack-reproduction pipeline

mechanism

conflux-rust#3497 (conflux-rust light protocol): a single unauthenticated StorageRoots (clp msg_id 0x1b) whose roots[0].root.delta = RLP list [3] makes MptValue<H256>::decode hit `n => panic!` during RLP decode, before request-matching. Victim = a LIGHT node (its clp client handler decodes StorageRoots). Verified live vs vulnerable v3.0.3 (f44f1cb, node_type=light): after the clp handshake (StatusPingV2/StatusPongV2), one 0x1b panics thread 'Socket IO Worker' at primitives/src/storage.rs:144; ~2 msgs freeze P2P. Fixed by returning a DecoderError. https://github.com/Conflux-Chain/conflux-rust/pull/3497

live exposure

No exposure data. Slashr ↗ has no risk signal mapped to this technique yet — absence of data is not absence of exposure.

instances (2)

chain	primitive	fidelity	origin	reproducer (bundle)	source
conflux	conflux_light_storageroots_mptvalue_panic	lab	reverse-engineered-cve	conflux_light_storageroots_mptvalue_panic	github.com ↗
conflux	conflux_manifest_trienode_hash_panic	lab	reverse-engineered-cve	conflux_manifest_trienode_hash_panic	github.com ↗

related (Fault termination)

NRDAX-T0001 - Addr Message Counter Overflow Crash active NRDAX-T0005 - Array Deserialization Memcpy Corruption active NRDAX-T0013 - Bloom Filter Divide-By-Zero Crash active NRDAX-T0024 - Compact Block FillBlock Duplicate Crash active NRDAX-T0056 - Duplicate Input Validation-Bypass Crash active NRDAX-T0101 - Handshake Crypto Validation Bypass Crash active NRDAX-T0120 - Integer-Overflow Panic Control Message active NRDAX-T0122 - Integer Signedness Index OOB Crash active

cite

https://nrdax.com/techniques/NRDAX-T0417

plain

NRDAX Registry. Technique NRDAX-T0417.

bibtex

@misc{nrdax_NRDAX_T0417,
  title = {Malformed RLP Field-Length Panic (NRDAX-T0417)},
  howpublished = {NRDAX Registry},
  url = {https://nrdax.com/techniques/NRDAX-T0417},
}

json (csl)

{
  "id": "nrdax-NRDAX-T0417",
  "type": "dataset",
  "title": "Malformed RLP Field-Length Panic (NRDAX-T0417)",
  "URL": "https://nrdax.com/techniques/NRDAX-T0417",
  "publisher": "NRDAX Registry"
}

badge

[![NRDAX-T0417 in the NRDAX registry](https://nrdax.com/badge/NRDAX-T0417.svg)](https://nrdax.com/techniques/NRDAX-T0417-malformed-rlp-field-length-panic)

use from the CLI

Retrieve or cite this technique from a script or the terminal with the NRDAX Python library & CLI.

Retrieve this technique

nrdax get NRDAX-T0417

Cite it (BibTeX)

nrdax cite NRDAX-T0417 --format bibtex

CLI guide → GitHub ↗