How severe is CVE-2023-49295?

This vulnerability has a severity rating of MEDIUM with a CVSS score of 6.5 out of 10.

What type of vulnerability is CVE-2023-49295?

This is classified as CWE-400, which is a common weakness in software security.

CVE-2023-49295 - MEDIUM Severity | CVSS 6.5

Vulnerability 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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