CyberRota Analysis
AI-GeneratedEnvoy versions prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1 are vulnerable to a crash caused by improper handling of scoped IPv6 addresses in certain proxy scenarios, which can lead to process termination. This vulnerability primarily affects deployments using ORIGINAL_DST transparent proxying and QUIC connections, potentially disrupting service availability. Organizations utilizing Envoy in their cloud-native applications should prioritize upgrading to the patched versions to mitigate this risk.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy's Utility::copyInternetAddressAndPort and QUIC client-address paths reconstruct scoped IPv6 addresses through addressAsString and Ipv6Instance. The string includes a percent scope identifier that inet_pton cannot parse, causing an exception or abort. Kernel-provided scoped IPv6 destinations in ORIGINAL_DST transparent-proxy deployments, and affected QUIC connection paths, can therefore terminate the process. The relevant scope boundary is that the HTTP use_http_header override rejects scoped addresses earlier; the advisory's crash path requires a kernel-provided original destination or the affected QUIC path. This issue is fixed in versions 1.36.10, 1.37.6, 1.38.4, and 1.39.1.
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