CVE-2023-49295

quic-go's path validation mechanism can cause denial of service

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.

Category

6.4
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 1.06% Top 25%
Vendor Advisory github.com
Affected: quic-go quic-go
Published at:
Updated at:

References

Link Tags
https://github.com/quic-go/quic-go/security/advisories/GHSA-ppxx-5m9h-6vxf vendor advisory
https://github.com/quic-go/quic-go/commit/17fc98c2d81dbe685c19702dc694a9d606ac56dc patch
https://github.com/quic-go/quic-go/commit/21609ddfeff93668c7625a85eb09f1541fdad965 patch
https://github.com/quic-go/quic-go/commit/3a9c18bcd27a01c551ac9bf8bd2b4bded77c189a patch
https://github.com/quic-go/quic-go/commit/554d543b50b917369fb1394cc5396d928166cf49 patch
https://github.com/quic-go/quic-go/commit/6cc3d58935426191296171a6c0d1ee965e10534e patch
https://github.com/quic-go/quic-go/commit/9aaefe19fc3dc8c8917cc87e6128bb56d9e9e6cc patch
https://github.com/quic-go/quic-go/commit/a0ffa757499913f7be69aa78f573a6aee3430ae4 patch
https://github.com/quic-go/quic-go/commit/d7aa627ebde91cf799ada2a07443faa9b1e5abb8 patch
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/G5RSHDTVMYAIGYVVFGKTMFHAZJMA3EVV/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZE7IOKXX5AATU2WR3V76X5Y3A44QAATG/

Frequently Asked Questions

What is the severity of CVE-2023-49295?
CVE-2023-49295 has been scored as a medium severity vulnerability.
How to fix CVE-2023-49295?
To fix CVE-2023-49295, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-49295 being actively exploited in the wild?
It is possible that CVE-2023-49295 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-49295?
CVE-2023-49295 affects quic-go quic-go.
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