CVE-2024-32475
CVSS 3.1 Score 7.5 of 10 (high)
Details
Summary
CVE-2024-32475 is a vulnerability affecting Envoy, a cloud-native edge and service proxy. When using an upstream TLS cluster with the `auto_sni` feature enabled, requests having a `host/authority` header longer than 255 characters cause the Envoy process to terminate abnormally. The vulnerability arises due to Envoy's failure to gracefully handle errors when setting the SNI for outbound TLS connections, which can occur when the `host/authority` header value exceeds the standard limit of 255 characters. Envoy assumes this operation to always succeed, resulting in an unintended process termination when it fails. This issue has been addressed in versions 1.30.1, 1.29.4, 1.28.3, and 1.27.5.
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