Envoy client may fake the header `x-envoy-original-path`
CVE-2023-27487

8.2HIGH

Key Information:

Vendor

Envoyproxy

Status
Envoy
Vendor
CVE Published:
4 April 2023

What is CVE-2023-27487?

The Envoy Proxy has a security vulnerability that allows an untrusted client to bypass JSON Web Token (JWT) checks by forging the internal header x-envoy-original-path. This vulnerability arises because Envoy does not strip the header at the start of request processing, leading to potential misuse in trace and gRPC logs, as well as affecting JWT authentication if the jwt_authn filter is employed. Patches have been released in versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9 to address this issue.

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Deploy the Patch

Affected Version(s)

envoy >= 1.25.0, <1.25.3 < 1.25.0, 1.25.3

envoy >= 1.24.0, < 1.24.4 < 1.24.0, 1.24.4

envoy >= 1.23.0, < 1.23.6 < 1.23.0, 1.23.6

References

https://github.com/envoyproxy/envoy/security/advisories/G...
x_refsource_CONFIRM

CVSS V3.1

Score:
8.2
Severity:
HIGH
Confidentiality:
High
Integrity:
Low
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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