Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Starting in version 1.14.0 and prior to versions 1.14.16 and 1.15.10, a policy rule denying a prefix that is broader than `/32` may be ignored if there is a policy rule referencing a more narrow prefix (`CIDRSet` or `toFQDN`) and this narrower policy rule specifies either `enableDefaultDeny: false` or `- toEntities: all`. Note that a rule specifying `toEntities: world` or `toEntities: 0.0.0.0/0` is insufficient, it must be to entity `all`.This issue has been patched in Cilium v1.14.16 and v1.15.10. As this issue only affects policies using `enableDefaultDeny: false` or that set `toEntities` to `all`, some workarounds are available. For users with policies using `enableDefaultDeny: false`, remove this configuration option and explicitly define any allow rules required. For users with egress policies that explicitly specify `toEntities: all`, use `toEntities: world`.
Metrics
Affected Vendors & Products
References
History
Mon, 21 Oct 2024 20:15:00 +0000
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First Time appeared |
Cilium
Cilium cilium |
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CPEs | cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:* | |
Vendors & Products |
Cilium
Cilium cilium |
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Metrics |
ssvc
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Mon, 21 Oct 2024 19:15:00 +0000
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Description | Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Starting in version 1.14.0 and prior to versions 1.14.16 and 1.15.10, a policy rule denying a prefix that is broader than `/32` may be ignored if there is a policy rule referencing a more narrow prefix (`CIDRSet` or `toFQDN`) and this narrower policy rule specifies either `enableDefaultDeny: false` or `- toEntities: all`. Note that a rule specifying `toEntities: world` or `toEntities: 0.0.0.0/0` is insufficient, it must be to entity `all`.This issue has been patched in Cilium v1.14.16 and v1.15.10. As this issue only affects policies using `enableDefaultDeny: false` or that set `toEntities` to `all`, some workarounds are available. For users with policies using `enableDefaultDeny: false`, remove this configuration option and explicitly define any allow rules required. For users with egress policies that explicitly specify `toEntities: all`, use `toEntities: world`. | |
Title | CIDR deny policies may not take effect when a more narrow CIDR allow is present | |
Weaknesses | CWE-276 | |
References |
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Metrics |
cvssV3_1
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published: 2024-10-21T19:05:55.430Z
Updated: 2024-10-21T19:59:01.283Z
Reserved: 2024-10-03T14:06:12.641Z
Link: CVE-2024-47825
Vulnrichment
Updated: 2024-10-21T19:58:55.920Z
NVD
Status : Awaiting Analysis
Published: 2024-10-21T19:15:03.500
Modified: 2024-10-23T15:13:25.583
Link: CVE-2024-47825
Redhat
No data.