Resource Exhaustion Affecting caddy package, versions <2.7.6-r2


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.12% (48th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-CADDY-6186687
  • published24 Jan 2024
  • disclosed10 Jan 2024

Introduced: 10 Jan 2024

CVE-2023-49295  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade Chainguard caddy to version 2.7.6-r2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream caddy package and not the caddy package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

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.

CVSS Scores

version 3.1