CVE-2024-42488: Github.com/cilium/cilium Policy Bypass For Host Firewall Vulnerability
MODERATECVE-2024-42488 is a MODERATE (CVSS 6.8) policy bypass for host firewall vulnerability (CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')) affecting Github.com/cilium/cilium libraries in the Go ecosystem. The issue involves policy bypass for host firewall policy due to race condition in cilium agent. Remediation is available by upgrading affected packages to version 1.14.14, 1.15.8.
CVE-2024-42488 at a Glance
Security Impact
CVSS: 6.8
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N).
How to Fix CVE-2024-42488
To remediate this vulnerability, upgrade all affected Github.com/cilium/cilium dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade github.com/cilium/cilium to 1.14.14Upgrade github.com/cilium/cilium to 1.15.8Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for github.com/cilium/ciliumHow to Check if You Are Affected
To determine whether your application is affected by CVE-2024-42488, inspect your project dependencies for Github.com/cilium/cilium:
inspect dependencies for github.com/cilium/ciliumAnalyze the terminal output to locate any version of Github.com/cilium/cilium in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.14.14), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition'), where the product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently. In Github.com/cilium/cilium, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2024-42488 Affected Github.com/cilium/cilium Versions
2 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
github.com/cilium/cilium
|
Go |
< 1.14.14
|
1.14.14
|
|
github.com/cilium/cilium
|
Go |
≥ 1.15.0
< 1.15.8
|
1.15.8
|
References
Frequently Asked Questions
What is CVE-2024-42488?
Which Github.com/cilium/cilium versions are affected?
What version fixes CVE-2024-42488?
Is github.com/cilium/cilium affected?
What is the CVSS score of CVE-2024-42488?
What CWE is associated with CVE-2024-42488?
How can I check Go dependencies for CVE-2024-42488?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-q7w8-72mr-vpgw",
"modified" : "2024-08-15T21:45:17Z",
"published" : "2024-08-15T21:43:38Z",
"aliases" : [ "CVE-2024-42488" ],
"summary" : "Policy bypass for Host Firewall policy due to race condition in Cilium agent",
"details" : "### Impact\n\nA race condition in the Cilium agent can cause the agent to ignore labels that should be applied to a node. This could in turn cause CiliumClusterwideNetworkPolicies intended for nodes with the ignored label to not apply, leading to policy bypass.\n\n### Patches\n\nThis issue was fixed in https://github.com/cilium/cilium/pull/33511.\n\nThis issue affects:\n\n- All versions of Cilium before v1.14.14\n- Cilium v1.15 between v1.15.0 and v1.15.7 inclusive\n\nThis issue has been patched in:\n\n- Cilium v1.14.14\n- Cilium v1.15.8\n\n### Workarounds\n\nAs the underlying issue depends on a race condition, users unable to upgrade can restart the Cilium agent on affected nodes until the affected policies are confirmed to be working as expected.\n\n### Acknowledgements\n\nThe Cilium community has worked together with members of Google and Isovalent to prepare these mitigations. Special thanks to @skmatti for raising and resolving this issue.\n\n### For more information\n\nIf you have any questions or comments about this advisory, please reach out on [Slack](https://docs.cilium.io/en/latest/community/community/#slack).\n\nIf you think you have found a vulnerability affecting Cilium, we strongly encourage you to report it to our security mailing list at [security@cilium.io](mailto:security@cilium.io). This is a private mailing list for the Cilium security team, and your report will be treated as top priority.\n",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/cilium/cilium"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "1.14.14"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/cilium/cilium"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "1.15.0"
}, {
"fixed" : "1.15.8"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/cilium/cilium/security/advisories/GHSA-q7w8-72mr-vpgw"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-42488"
}, {
"type" : "WEB",
"url" : "https://github.com/cilium/cilium/pull/33511"
}, {
"type" : "WEB",
"url" : "https://github.com/cilium/cilium/commit/7877db09b3f34d3081a1d66459b8fa6603dc3d30"
}, {
"type" : "WEB",
"url" : "https://github.com/cilium/cilium/commit/aa44dd148a9be95e07782e4f990e61678ef0abf8"
}, {
"type" : "WEB",
"url" : "https://github.com/cilium/cilium/commit/f81a1ee0cfdec928980db8640def984b2eeaa134"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/cilium/cilium"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-362" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2024-08-15T21:43:38Z",
"nvd_published_at" : "2024-08-15T21:15:17Z"
}
}