CVE-2023-34242: Github.com/cilium/cilium Cilium Vulnerable To Information Leakage Vulnerability
LOWCVE-2023-34242 is a LOW (CVSS 3.4) cilium vulnerable to information leakage vulnerability (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor) affecting Github.com/cilium/cilium libraries in the Go ecosystem. The issue involves cilium vulnerable to information leakage via incorrect referencegrant handling. Remediation is available by upgrading affected packages to version 1.13.4.
CVE-2023-34242 at a Glance
Security Impact
CVSS: 3.4
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N).
How to Fix CVE-2023-34242
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 1.13.4Run 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-2023-34242, 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 1.13.4), 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-200: Exposure of Sensitive Information to an Unauthorized Actor, where the product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. 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-2023-34242 Affected Github.com/cilium/cilium Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
github.com/cilium/cilium
|
Go |
≥ 1.13.0
< 1.13.4
|
1.13.4
|
References
Frequently Asked Questions
What is CVE-2023-34242?
Which Github.com/cilium/cilium versions are affected?
What version fixes CVE-2023-34242?
Is github.com/cilium/cilium affected?
What is the CVSS score of CVE-2023-34242?
What CWE is associated with CVE-2023-34242?
How can I check Go dependencies for CVE-2023-34242?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-r7wr-4w5q-55m6",
"modified" : "2023-06-16T17:47:56Z",
"published" : "2023-06-16T17:47:56Z",
"aliases" : [ "CVE-2023-34242" ],
"summary" : "Cilium vulnerable to information leakage via incorrect ReferenceGrant handling",
"details" : "### Impact\n\nWhen the [Gateway API](https://docs.cilium.io/en/v1.13/network/servicemesh/gateway-api/gateway-api/) is enabled in Cilium, the absence of a check on the namespace in which a [ReferenceGrant](https://gateway-api.sigs.k8s.io/api-types/referencegrant/) is created could result in Cilium gaining visibility of secrets (including certificates) and services across namespaces.\n\nAn attacker on an affected cluster can configure Cilium to use cluster secrets or communicate with services that it should not have access to.\n\nGateway API functionality is disabled by default.\n\n### Patches\n\nThis vulnerability is fixed in Cilium release 1.13.4.\n\nCilium versions <1.13 are not affected.\n\n### Workarounds\n\nThere is no workaround to this issue.\n\n### Acknowledgements\nThe Cilium community has worked together with members of Isovalent to prepare these mitigations. Special thanks to @meyskens for investigating and fixing the issue.\n\n### For more information\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\nAs usual, if you think you found a related vulnerability, we strongly encourage you to report security vulnerabilities to our private security mailing list: [security@cilium.io](mailto:security@cilium.io) - first, before disclosing them in any public forums. This is a private mailing list where only members of the Cilium internal security team are subscribed to, and is treated as top priority.\n",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/cilium/cilium"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "1.13.0"
}, {
"fixed" : "1.13.4"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/cilium/cilium/security/advisories/GHSA-r7wr-4w5q-55m6"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-34242"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/cilium/cilium"
}, {
"type" : "WEB",
"url" : "https://github.com/cilium/cilium/releases/tag/v1.13.4"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-200" ],
"severity" : "LOW",
"github_reviewed" : true,
"github_reviewed_at" : "2023-06-16T17:47:56Z",
"nvd_published_at" : "2023-06-15T20:15:09Z"
}
}