Improper access control in envoy - CVE-2020-8660
Published: March 9, 2020
Vulnerability identifier: #VU25836
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-8660
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass TLS inspector.
The vulnerability exists due to the TLS extensions (SNI, ALPN) are not inspected, those connections might been matched to a wrong filter chain. A remote attacker can bypass implemented security restrictions in the process and gain unauthorized access to the application.
Affected software
envoy
Cilium
Cilium
How to mitigate CVE-2020-8660
Install updates from vendor's website.
envoy - addressed in versions 1.12.3, 1.13.1
Cilium - addressed in versions 1.5.13, 1.6.7, 1.7.1
Cilium - addressed in versions 1.5.13, 1.6.7, 1.7.1