8.1 High
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H
0.0004 Low
EPSS
Percentile
5.3%
github.com/cilium/cilium is vulnerable to Missing Authentication. The vulnerability is due to the ValidateCNP
function in validator.go
which lacks checks for a policy with any malicious or incorrectly match configurations, allowing an attacker to create policies that bypass namespace restrictions and affect the entire Cilium cluster when using a crafted endpointSelector
that uses the DoesNotExist
operator on the reserved:init
label.
docs.cilium.io/en/stable/security/threat-model/#kubernetes-api-server-attacker
github.com/cilium/cilium/commit/4c2fda41aec513a294738556d2b58e43ff52291d
github.com/cilium/cilium/commit/611f75b81e64c54fd8d8069cae2a3effc21082c3
github.com/cilium/cilium/commit/afa292ecf278ec561b432f1aac2d2211fddf2274
github.com/cilium/cilium/pull/28007
github.com/cilium/cilium/security/advisories/GHSA-4xp2-w642-7mcx