Bug 1222487

Summary:	VUL-0: CVE-2024-22189: syncthing: quic-go: memory exhaustion attack against QUIC's connection ID mechanism
Product:	[openSUSE] openSUSE Tumbleweed	Reporter:	Camila Camargo de Matos <camila.matos>
Component:	Security	Assignee:	Alexei Sorokin <sor.alexei>
Status:	IN_PROGRESS ---	QA Contact:	E-mail List <qa-bugs>
Severity:	Major
Priority:	P3 - Medium	CC:	camila.matos, marius.kittler, security-team, smash_bz
Version:	Current
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/400376/
Whiteboard:
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---
Bug Depends on:
Bug Blocks:	1222461

Description Camila Camargo de Matos 2024-04-08 15:06:17 UTC

+++ This bug was initially created as a clone of Bug #1222461 +++

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:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-22189
https://www.cve.org/CVERecord?id=CVE-2024-22189
https://github.com/quic-go/quic-go/commit/4a99b816ae3ab03ae5449d15aac45147c85ed47a
https://github.com/quic-go/quic-go/security/advisories/GHSA-c33x-xqrf-c478
https://seemann.io/posts/2024-03-19-exploiting-quics-connection-id-management
https://www.youtube.com/watch?v=JqXtYcZAtIA&t=3683s
https://bugzilla.redhat.com/show_bug.cgi?id=2273513

Comment 1 Camila Camargo de Matos 2024-04-08 15:06:44 UTC

Go module quic-go is affected by CVE-2024-22189 and this module is embedded in openSUSE:Factory/syncthing (quic-go version 0.41.0).

Comment 2 Marius Kittler 2024-04-08 15:47:24 UTC

Upstream has already updated the dependency:
https://patch-diff.githubusercontent.com/raw/syncthing/syncthing/pull/9497.patch

The packaging of Syncthing relies on upstream's vendoring so we cannot just apply this patch.

Therefore I suppose it would be the easiest to wait for the next upstream release or to package
https://github.com/syncthing/syncthing/releases/tag/v1.27.6-rc.2 which seems to be already at `github.com/quic-go/quic-go v0.42.0`.

Comment 3 Marius Kittler 2024-04-09 09:29:03 UTC

Upstream has just created a new release and judging by the contained go.mod file it contains the fixed quic-go version. So I'm just updating the package to that version.

Comment 4 Marius Kittler 2024-04-09 09:33:05 UTC

https://build.opensuse.org/request/show/1166340

Comment 5 Marius Kittler 2024-04-10 12:51:52 UTC

The SR has been merged so from my side this is resolved.