CVE-2020-8664 Details
Description
CNCF Envoy through 1.13.0 has incorrect Access Control when using SDS with Combined Validation Context. Using the same secret (e.g. trusted CA) across many resources together with the combined validation context could lead to the “static” part of the validation context to be not applied, even though it was visible in the active config dump.
A vulnerability exists in CNCF Envoy versions prior to 1.13.0, related to improper access control when using the Secret Discovery Service (SDS) with a combined validation context. This issue arises because the same secret, such as a trusted Certificate Authority (CA), can be applied across multiple resources. When this occurs, resources configured after the initial secret reception may not apply the 'static' validation context rules, leading to a bypass of important security checks. The flaw allows for unauthorized access to services or impersonation of services, potentially escalating privileges.
Users can upgrade to Envoy versions 1.13.1 or 1.12.3, both of which contain the necessary fix. Instructions for upgrading can be found in the Envoy documentation.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://access.redhat.com/errata/RHSA-2020:0734 | CVE | Third Party Advisory |
| https://github.com/envoyproxy/envoy/security/advisories/GHSA-3x9m-pgmg-xpx8 | CVE | Third Party Advisory |
| https://www.envoyproxy.io/docs/envoy/v1.13.1/intro/version_history | CVE | Release NotesThird Party Advisory |
| https://access.redhat.com/errata/RHSA-2020:0734 | [email protected] | Third Party Advisory |
| https://github.com/envoyproxy/envoy/security/advisories/GHSA-3x9m-pgmg-xpx8 | [email protected] | Third Party Advisory |
| https://www.envoyproxy.io/docs/envoy/v1.13.1/intro/version_history | [email protected] | Release NotesThird Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-287 | Improper Authentication | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| cncf envoy | <= 1.13.0 |
CPE
Remediation
| |
Change History
7 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Nov 21, 2024 | CVE Modified | CVE |
| May 14, 2024 | CVE Modified | [email protected] |
| Jul 21, 2021 | CWE Remap | [email protected] |
| Jul 13, 2020 | Modified Analysis | [email protected] |
| Mar 11, 2020 | CVE Modified | [email protected] |
| Mar 5, 2020 | Initial Analysis | [email protected] |