CVEvulnerability

CVE-2024-32475

7.5 HIGH Published 2024-04-18 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2024-04-18
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-253, CWE-617

Description

Envoy is a cloud-native, open source edge and service proxy. When an upstream TLS cluster is used with `auto_sni` enabled, a request containing a `host`/`:authority` header longer than 255 characters triggers an abnormal termination of Envoy process. Envoy does not gracefully handle an error when setting SNI for outbound TLS connection. The error can occur when Envoy attempts to use the `host`/`:authority` header value longer than 255 characters as SNI for outbound TLS connection. SNI length is limited to 255 characters per the standard. Envoy always expects this operation to succeed and abnormally aborts the process when it fails. This vulnerability is fixed in 1.30.1, 1.29.4, 1.28.3, and 1.27.5.

Affected configurations

• envoyproxy envoy (>= 1.13.0 < 1.27.5) • envoyproxy envoy (>= 1.28.0 < 1.28.3) • envoyproxy envoy (>= 1.29.0 < 1.29.4) • envoyproxy envoy 1.30.0

Related

Weakness · CWE (2)

  • CWE-253 Incorrect Check of Function Return Value weakness
  • CWE-617 Reachable Assertion weakness

References