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CVE-2024-45806— Potential manipulate `x-envoy` headers from external sources in envoy

Quick assessment

Affected
envoyproxy envoy
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Envoy是Enphase开源的一款用于连接智能家居设备的网关程序。 Envoy 1.32.0之前版本存在安全漏洞，该漏洞源于允许外部客户端操纵Envoy标头，会导致网格内的未经授权的访问或其他恶意操作。

CVSS 6.5 · Medium EPSS 0.38% · P29

Possible ATT&CK Techniques 2 AI

T1434 T1078 · Valid Accounts
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I. Basic Information for CVE-2024-45806

Vulnerability Information
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Vulnerability Title
Potential manipulate `x-envoy` headers from external sources in envoy
Source: CVE Program / CVE List V5
Vulnerability Description
Envoy is a cloud-native high-performance edge/middle/service proxy. A security vulnerability in Envoy allows external clients to manipulate Envoy headers, potentially leading to unauthorized access or other malicious actions within the mesh. This issue arises due to Envoy's default configuration of internal trust boundaries, which considers all RFC1918 private address ranges as internal. The default behavior for handling internal addresses in Envoy has been changed. Previously, RFC1918 IP addresses were automatically considered internal, even if the internal_address_config was empty. The default configuration of Envoy will continue to trust internal addresses while in this release and it will not trust them by default in next release. If you have tooling such as probes on your private network which need to be treated as trusted (e.g. changing arbitrary x-envoy headers) please explicitly include those addresses or CIDR ranges into `internal_address_config`. Successful exploitation could allow attackers to bypass security controls, access sensitive data, or disrupt services within the mesh, like Istio. This issue has been addressed in versions 1.31.2, 1.30.6, 1.29.9, and 1.28.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
Envoy 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Envoy是Enphase开源的一款用于连接智能家居设备的网关程序。 Envoy 1.32.0之前版本存在安全漏洞，该漏洞源于允许外部客户端操纵Envoy标头，会导致网格内的未经授权的访问或其他恶意操作。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
envoyproxy envoy >= 1.31.0, < 1.31.2 -

II. Public POCs for CVE-2024-45806

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III. Intelligence Information for CVE-2024-45806

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Vendor Advisories for CVE-2024-45806 (1)

Same Patch Batch · envoyproxy · 2024-09-19 · 5 CVEs total

CVE-2024-45807 7.5 HIGH oghttp2 crash on OnBeginHeadersForStream in envoy
CVE-2024-45810 6.5 MEDIUM Envoy crashes for LocalReply in http async client
CVE-2024-45808 6.5 MEDIUM Malicious log injection via access logs in envoy
CVE-2024-45809 5.3 MEDIUM Jwt filter crash in the clear route cache with remote JWKs in envoy

IV. Related Vulnerabilities

Same product: envoy
Same vendor: envoyproxy
Same weakness: CWE-639

V. Comments for CVE-2024-45806

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