NRDAX-T0225 - QUIC Control Frame Flood

Connection exhaustion · P2P and gossip · no bound · active · first seen 2026-07-11

provenance: Reproduced in NullRabbit's attack-reproduction pipeline

mechanism

s2n-quic stream-limit exhaustion (GHSA-475v-pq2g-fp9g): pre-patch `RemoteInitiated::on_close_stream` directly bumped `max_streams_sync` with NO rate limiting, so every close of a remote-initiated stream immediately re-grants stream credit (and makes s2n-quic emit a MAX_STREAMS frame). A peer that rapidly opens-and-closes remote-initiated streams (STREAM open+FIN then RESET_STREAM) while signalling STREAMS_BLOCKED to pull the limit up drives uncontrolled stream-controller churn / limit-sync traffic - 'unnecessary resource utilization when peers open streams beyond advertised limits' (CWE-400). No workaround; fixed in s2n-quic v1.31.0 by adding an RTT-based TokenBucket in RemoteInitiated to throttle the limit increase. Severity Low. PUBLIC-CVE REPLICATION - wire signature only (loopback UDP mock, no s2n-quic server stood up).

live exposure

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

instances (1)

chain	primitive	fidelity	origin	reproducer (bundle)	source
quic	s2n_quic_stream_limit_exhaustion	lab	reverse-engineered-cve	s2n_quic_stream_limit_exhaustion	GHSA-475v-pq2g-fp9g ↗

references

vendor-advisory: GHPR-quic-go-quic-go-4369

related (Connection exhaustion)

NRDAX-T0041 - Cross-Chain Peer Pool Pollution active NRDAX-T0064 - Endpoint Concurrency Cap Exhaustion active NRDAX-T0099 - Half-Open Handshake Slowloris active NRDAX-T0214 - Protocol Message Flood Unbounded Goroutine active NRDAX-T0246 - Rate-Limit Key Confusion active NRDAX-T0261 - RPC Request Flood active NRDAX-T0291 - Subscription Permit Exhaustion active NRDAX-T0320 - Unbounded Connection Flood active

cite

https://nrdax.com/techniques/NRDAX-T0225

plain

NRDAX Registry. Technique NRDAX-T0225.

bibtex

@misc{nrdax_NRDAX_T0225,
  title = {QUIC Control Frame Flood (NRDAX-T0225)},
  howpublished = {NRDAX Registry},
  url = {https://nrdax.com/techniques/NRDAX-T0225},
}

json (csl)

{
  "id": "nrdax-NRDAX-T0225",
  "type": "dataset",
  "title": "QUIC Control Frame Flood (NRDAX-T0225)",
  "URL": "https://nrdax.com/techniques/NRDAX-T0225",
  "publisher": "NRDAX Registry"
}

badge

[![NRDAX-T0225 in the NRDAX registry](https://nrdax.com/badge/NRDAX-T0225.svg)](https://nrdax.com/techniques/NRDAX-T0225-quic-control-frame-flood)

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-T0225

Cite it (BibTeX)

nrdax cite NRDAX-T0225 --format bibtex

CLI guide → GitHub ↗