NRDAX-T0321 - Unbounded Connection ID Storage

Memory amplification · P2P and gossip · no bound · active · first seen 2026-07-10

provenance: Reproduced in NullRabbit's attack-reproduction pipeline

mechanism

quic-go connection-ID memory exhaustion (CVE-2024-22189, GHSA-c33x-xqrf-c478): on an established QUIC connection the attacker floods NEW_CONNECTION_ID frames (type 0x18) with an escalating 'Retire Prior To' field. Each escalation forces the peer (RFC 9000 §19.15) to retire the connection IDs below it and to queue a RETIRE_CONNECTION_ID frame per retirement. The attacker prevents the peer from ever draining that queue by collapsing its congestion window (selective ACKing) and inflating its RTT estimate, so the RETIRE_CONNECTION_ID frames accumulate unbounded → peer runs out of memory (CWE-770, no per-connection cap). No workaround; fixed in quic-go v0.42.0. PUBLIC-CVE REPLICATION - wire signature only (loopback UDP mock, no quic-go 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 (2)

chain	primitive	fidelity	origin	reproducer (bundle)	source
quic	quic_conn_id_memory_exhaustion	lab	reverse-engineered-cve	quic_conn_id_memory_exhaustion	CVE-2024-22189 ↗
quic	quiche_conn_id_retirement_unbounded	lab	reverse-engineered-cve	quiche_conn_id_retirement_unbounded	CVE-2024-1410 ↗

related (Memory amplification)

NRDAX-T0023 - Coalesced Packet Buffer Leak active NRDAX-T0025 - Compact Block Size Integer Overflow active NRDAX-T0038 - Count Underflow Header Serving Amplification active NRDAX-T0042 - Crypto Frame Reassembly Buffer Exhaustion active NRDAX-T0046 - Decompression Bomb Resource Exhaustion active NRDAX-T0059 - Duplicate Transport Parameter Memory Leak active NRDAX-T0061 - Duplicate Tx Mempool Index Desync active NRDAX-T0071 - Ethash Verification Memory Exhaustion active

cite

https://nrdax.com/techniques/NRDAX-T0321

plain

NRDAX Registry. Technique NRDAX-T0321.

bibtex

@misc{nrdax_NRDAX_T0321,
  title = {Unbounded Connection ID Storage (NRDAX-T0321)},
  howpublished = {NRDAX Registry},
  url = {https://nrdax.com/techniques/NRDAX-T0321},
}

json (csl)

{
  "id": "nrdax-NRDAX-T0321",
  "type": "dataset",
  "title": "Unbounded Connection ID Storage (NRDAX-T0321)",
  "URL": "https://nrdax.com/techniques/NRDAX-T0321",
  "publisher": "NRDAX Registry"
}

badge

[![NRDAX-T0321 in the NRDAX registry](https://nrdax.com/badge/NRDAX-T0321.svg)](https://nrdax.com/techniques/NRDAX-T0321-unbounded-connection-id-storage)

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-T0321

Cite it (BibTeX)

nrdax cite NRDAX-T0321 --format bibtex

CLI guide → GitHub ↗