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WS-2021-0122
Date: August 19, 2025
Under certain conditions, ICMP Echo Request sent to a Cilium endpoint from an actor may bypass a network policy which disallows access from the actor to the endpoint, but allows from the endpoint to the actor. This does NOT apply to UDP and TCP traffic. The issue has been fixed in Cilium versions v1.7.15, v1.8.8 and v1.9.5.
Language: Go
Severity Score
Severity Score
Weakness Type (CWE)
Authentication Bypass Using an Alternate Path or Channel
CWE-288CVSS v3.1
| Base Score: |
|
|---|---|
| Attack Vector (AV): | NETWORK |
| Attack Complexity (AC): | LOW |
| Privileges Required (PR): | NONE |
| User Interaction (UI): | REQUIRED |
| Scope (S): | UNCHANGED |
| Confidentiality (C): | HIGH |
| Integrity (I): | NONE |
| Availability (A): | NONE |