VYPR
Medium severity6.4NVD Advisory· Published Jan 10, 2024· Updated Jun 17, 2026

CVE-2023-49295

CVE-2023-49295

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.

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
github.com/quic-go/quic-goGo
>= 0.40.0, < 0.40.10.40.1
github.com/quic-go/quic-goGo
>= 0.39.0, < 0.39.40.39.4
github.com/quic-go/quic-goGo
>= 0.38.0, < 0.38.20.38.2
github.com/quic-go/quic-goGo
< 0.37.70.37.7

Affected products

20

Patches

Vulnerability mechanics

References

16

News mentions

0

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