NRDAX-T0046 - Decompression Bomb Resource Exhaustion

memory_amp · active · first seen 2019-01-01

provenance: Reproduced in NullRabbit's attack-reproduction pipeline

mechanism

quic-go HTTP/3 QPACK decompression-bomb memory exhaustion (CVE-2025-64702): a flood of QUIC v1 short-header (1-RTT) packets, each carrying a STREAM frame (type 0x0b) on a fresh client bidi stream whos

instances (1)

chain	primitive	fidelity	origin	reproducer (bundle)	source
quic	quic_go_qpack_decompression_bomb	lab	reverse-engineered-cve	quic_go_qpack_decompression_bomb	CVE-2025-64702 / GHSA-g754-hx8w-x2g6 — quic-go/quic-go: 'HTTP/3 QPACK Header Expansion Memory Exhaustion.' quic-go's HTTP/3 decoder limits the ENCODED HEADERS frame size (1 MB (http3.Server.MaxHeaderBytes) server / 10 MB (http3.Transport.MaxResponseHeaderBytes) client) but not the DECODED field-section size. A crafted QPACK HEADERS block that densely references long static-table entries decompresses to ~50x its encoded size; RFC 9114 requires enforcing SETTINGS_MAX_FIELD_SECTION_SIZE, which quic-go <= v0.56.0 did not, so the decoder allocates the fully-expanded field section unbounded -> memory exhaustion (availability DoS, severity Moderate, CVSS 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L). Fixed v0.57.0 (SETTINGS_MAX_FIELD_SECTION_SIZE + incremental QPACK decoding, abort early). Affected quic-go <= v0.56.0. Reported by sfoxio. Advisory: https://github.com/quic-go/quic-go/security/advisories/GHSA-g754-hx8w-x2g6

references

cve: CVE-2019-25072

cve: CVE-2021-37136

cve: CVE-2026-42587

related (memory_amp)

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-T0059 - Duplicate Transport Parameter Memory Leak active NRDAX-T0061 - Duplicate Tx Mempool Index Desync active NRDAX-T0071 - Ethash Verification Memory Exhaustion active NRDAX-T0095 - GraphQL Alias Query Amplification active

cite

https://nrdax.com/techniques/NRDAX-T0046

plain

NRDAX Registry. Technique NRDAX-T0046.

bibtex

@misc{nrdax_NRDAX_T0046,
  title = {Decompression Bomb Resource Exhaustion (NRDAX-T0046)},
  howpublished = {NRDAX Registry},
  url = {https://nrdax.com/techniques/NRDAX-T0046},
}

json (csl)

{
  "id": "nrdax-NRDAX-T0046",
  "type": "dataset",
  "title": "Decompression Bomb Resource Exhaustion (NRDAX-T0046)",
  "URL": "https://nrdax.com/techniques/NRDAX-T0046",
  "publisher": "NRDAX Registry"
}