GHSA-24m5-r6hv-ccgp

Source

https://github.com/advisories/GHSA-24m5-r6hv-ccgp

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/09/GHSA-24m5-r6hv-ccgp/GHSA-24m5-r6hv-ccgp.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-24m5-r6hv-ccgp

Aliases

Related

Published

2023-09-27T00:33:04Z

Modified

2024-08-21T14:56:56.973975Z

Severity

3.5 (Low) CVSS_V3 - CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L CVSS Calculator

Summary

Specific Cilium configurations vulnerable to DoS via Kubernetes annotations

Details

Impact

In Cilium clusters where Cilium's Layer 7 proxy has been disabled, creating workloads with

policy.cilium.io/proxy-visibility annotations (in Cilium >= v1.13)
io.cilium.proxy-visibility annotations (in Cilium <= v1.12)

causes the Cilium agent to segfault on the node to which the workload is assigned.

Existing traffic on the affected node will continue to flow, but the Cilium agent on the node will not able to process changes to workloads running on the node. This will also prevent workloads from being able to start on the affected node. The denial of service will be limited to the node on which the workload is scheduled, however an attacker may be able to schedule workloads on the node of their choosing, which could lead to targeted attacks.

Patches

Pull request with fix

This issue affects:

Cilium <= v1.14.1 Cilium <= v1.13.6 Cilium <= v1.12.13

This issue has been resolved in:

Cilium v1.14.2 Cilium v1.13.7 Cilium v1.12.14

Workarounds

Users can avoid this denial of service attack by enabling the Layer 7 proxy.

For more information

If you have any questions or comments about this advisory, please reach out on Slack.

As 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 - 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.

Database specific

{
    "nvd_published_at": "2023-09-27T15:19:30Z",
    "cwe_ids": [
        "CWE-755"
    ],
    "severity": "LOW",
    "github_reviewed": true,
    "github_reviewed_at": "2023-09-27T00:33:04Z"
}

References

Affected packages

Go / github.com/cilium/cilium

Package

Name: github.com/cilium/cilium; View open source insights on deps.dev
Purl: pkg:golang/github.com/cilium/cilium

Affected ranges

Type: SEMVER
Events: Introduced

1.14.0

Fixed

1.14.2

Go / github.com/cilium/cilium

Package

Name: github.com/cilium/cilium; View open source insights on deps.dev
Purl: pkg:golang/github.com/cilium/cilium

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.12.14