cve.bz

CVE-2023-49295

6.5 mediumEPSS 1.2%

Medium (6.5) in quic-go project quic-go. EPSS 1.2% chance of exploitation in the next 30 days. Fixed in github.com/quic-go/quic-go 0.37.7, 0.38.2, 0.39.4.

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.

Severity

CVSS 3.1

6.5 medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS
1.2% chance of exploitation in the next 30 days; higher than 68% of CVEs (scores of 2026-10-31)
CWE
CWE-400
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-ppxx-5m9h-6vxfGogithub.com/quic-go/quic-go>=0.40.0 <0.40.10.40.1
GHSA-ppxx-5m9h-6vxfGogithub.com/quic-go/quic-go>=0.39.0 <0.39.40.39.4
GHSA-ppxx-5m9h-6vxfGogithub.com/quic-go/quic-go>=0.38.0 <0.38.20.38.2
GHSA-ppxx-5m9h-6vxfGogithub.com/quic-go/quic-go<0.37.70.37.7
GO-2024-2459Gogithub.com/quic-go/quic-go<0.37.7
>=0.38.0 <0.38.2
>=0.39.0 <0.39.4
>=0.40.0 <0.40.1		0.37.7, 0.38.2, 0.39.4, 0.40.1

References

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