CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
AI Score
Confidence
High
EPSS
Percentile
16.3%
Due to ReferenceGrant changes not being immediately propagated in Cilium’s GatewayAPI controller, Gateway resources are able to access secrets in other namespaces after the associated ReferenceGrant has been revoked. This can lead to Gateways continuing to establish sessions using secrets that they should no longer have access to.
This issue was resolved in https://github.com/cilium/cilium/pull/34032.
This issue affects:
This issue has been patched in:
Any modification of a related Gateway/HTTPRoute/GRPCRoute/TCPRoute CRD (for example, adding any label to any of these resources) will trigger a reconciliation of ReferenceGrants on an affected cluster.
The Cilium community has worked together with members of Cure53 and Isovalent to prepare these mitigations. Special thanks to @sayboras for resolving this issue.
If you have any questions or comments about this advisory, please reach out on Slack.
If you think you have found a vulnerability affecting Cilium, we strongly encourage you to report it to our security mailing list at [email protected]. This is a private mailing list for the Cilium security team, and your report will be treated as top priority.
github.com/advisories/GHSA-vwf8-q6fw-4wcm
github.com/cilium/cilium/commit/414a96b53d51ef6e6645c44426e26bc8e7c7c059
github.com/cilium/cilium/commit/92c110e58a7be6586819dd51fb0f6ee1ec4be8f8
github.com/cilium/cilium/commit/ed3dfa0aab8b80f7e841a6d49d2a990ac2dca053
github.com/cilium/cilium/pull/34032
github.com/cilium/cilium/security/advisories/GHSA-vwf8-q6fw-4wcm
nvd.nist.gov/vuln/detail/CVE-2024-42486