CVE-2022-36049: Github.com/fluxcd/helm controller Denial of Service Vulnerability
HIGHCVE-2022-36049 is a HIGH (CVSS 7.7) denial of service vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Github.com/fluxcd/helm controller libraries in the Go ecosystem. The issue involves helm controller denial of service. Remediation is available by upgrading affected packages to version 0.23.0, 0.32.0.
CVE-2022-36049 at a Glance
Security Impact
CVSS: 7.7
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H).
How to Fix CVE-2022-36049
To remediate this vulnerability, upgrade all affected Github.com/fluxcd/helm controller 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/fluxcd/helm-controller to 0.23.0Upgrade github.com/fluxcd/flux2 to 0.32.0Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for github.com/fluxcd/helm-controllerHow to Check if You Are Affected
To determine whether your application is affected by CVE-2022-36049, inspect your project dependencies for Github.com/fluxcd/helm controller:
inspect dependencies for github.com/fluxcd/helm-controllerAnalyze the terminal output to locate any version of Github.com/fluxcd/helm controller in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.23.0), 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-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In Github.com/fluxcd/helm controller, 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-2022-36049 Affected Github.com/fluxcd/helm controller Versions
2 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
github.com/fluxcd/helm-controller
|
Go |
≥ 0.0.4
< 0.23.0
|
0.23.0
|
|
github.com/fluxcd/flux2
|
Go |
≥ 0.0.17
< 0.32.0
|
0.32.0
|
References
Frequently Asked Questions
What is CVE-2022-36049?
Which Github.com/fluxcd/helm controller versions are affected?
What version fixes CVE-2022-36049?
Is github.com/fluxcd/helm-controller affected?
Is github.com/fluxcd/flux2 affected?
What is the CVSS score of CVE-2022-36049?
What CWE is associated with CVE-2022-36049?
How can I check Go dependencies for CVE-2022-36049?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-p2g7-xwvr-rrw3",
"modified" : "2022-09-16T18:49:48Z",
"published" : "2022-09-16T18:49:48Z",
"aliases" : [ "CVE-2022-36049" ],
"summary" : "Helm Controller denial of service",
"details" : "Helm controller is tightly integrated with the Helm SDK. [A vulnerability](https://github.com/helm/helm/security/advisories/GHSA-7hfp-qfw3-5jxh) found in the Helm SDK allows for specific data inputs to cause high memory consumption, which in some platforms could cause the controller to panic and stop processing reconciliations.\n\n### Impact\nIn a shared cluster multi-tenancy environment, a tenant could create a HelmRelease that makes the controller panic, denying all other tenants from their Helm releases being reconciled.\n\n### Credits\n\nThe initial crash bug was reported by [oss-fuzz](https://github.com/google/oss-fuzz). The Flux Security team produced the first exploit and worked together with the Helm Security team to ensure that both projects were patched timely.\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n- Open an issue in any of the affected repositories.\n- Contact us at the CNCF Flux Channel.\n\n### References\n\n- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=48360\n- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=44996\n- https://github.com/helm/helm/security/advisories/GHSA-7hfp-qfw3-5jxh\n",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/fluxcd/helm-controller"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0.0.4"
}, {
"fixed" : "0.23.0"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/fluxcd/flux2"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0.0.17"
}, {
"fixed" : "0.32.0"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/fluxcd/flux2/security/advisories/GHSA-p2g7-xwvr-rrw3"
}, {
"type" : "WEB",
"url" : "https://github.com/helm/helm/security/advisories/GHSA-7hfp-qfw3-5jxh"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-36049"
}, {
"type" : "WEB",
"url" : "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=44996"
}, {
"type" : "WEB",
"url" : "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=48360"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/fluxcd/flux2"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-400", "CWE-770" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2022-09-16T18:49:48Z",
"nvd_published_at" : "2022-09-07T21:15:00Z"
}
}