Description
quic-go is an implementation of the QUIC protocol in Go. Prior to version 0.42.0, an attacker can cause its peer to run out of memory sending a large number of `NEW_CONNECTION_ID` frames that retire old connection IDs. The receiver is supposed to respond to each retirement frame with a `RETIRE_CONNECTION_ID` frame. The attacker can prevent the receiver from sending out (the vast majority of) these `RETIRE_CONNECTION_ID` frames by collapsing the peers congestion window (by selectively acknowledging received packets) and by manipulating the peer's RTT estimate. Version 0.42.0 contains a patch for the issue. No known workarounds are available.
References (4)
Core 4
Core References
Vendor Advisory x_refsource_confirm
https://github.com/quic-go/quic-go/security/advisories/GHSA-c33x-xqrf-c478
Patch x_refsource_misc
https://github.com/quic-go/quic-go/commit/4a99b816ae3ab03ae5449d15aac45147c85ed47a
Various Sources x_refsource_misc
https://seemann.io/posts/2024-03-19-exploiting-quics-connection-id-management
Various Sources x_refsource_misc
https://www.youtube.com/watch?v=JqXtYcZAtIA&t=3683s
Scores
CVSS v3
7.5
EPSS
0.0009
EPSS Percentile
25.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-770
Status
published
Products (2)
quic-go/quic-go
0 - 0.42.0Go
quic-go/quic-go
< 0.42.0
Published
Apr 04, 2024
Tracked Since
Feb 18, 2026