CVE-2023-49295
Denial of service via path validation in github.com/quic-go/quic-go
Description
quic-go is an implementation of the QUIC protocol (RFC 9000, RFC 9001, RFC 9002) in Go. An attacker can cause its peer to run out of memory sending a large number of PATH_CHALLENGE frames. The receiver is supposed to respond to each PATH_CHALLENGE frame with a PATH_RESPONSE frame. The attacker can prevent the receiver from sending out (the vast majority of) these PATH_RESPONSE frames by collapsing the peers congestion window (by selectively acknowledging received packets) and by manipulating the peer's RTT estimate. This vulnerability has been patched in versions 0.37.7, 0.38.2 and 0.39.4.
How to fix CVE-2023-49295
To remediate CVE-2023-49295, upgrade the affected package to a fixed version below.
- —no fix listed
- —upgrade to 0.40.1 or later
- —upgrade to 0.37.7 or later
Is CVE-2023-49295 being exploited?
Low — EPSS is 1.8%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0
- >= 0.40.0, < 0.40.1
- from 0, < 0.37.7, >= 0.38.0, < 0.38.2, >= 0.39.0, < 0.39.4, >= 0.40.0, < 0.40.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.4 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H |