Vulnerability Details : CVE-2022-36049
Flux2 is a tool for keeping Kubernetes clusters in sync with sources of configuration, and Flux's helm-controller is a Kubernetes operator that allows one to declaratively manage Helm chart releases. Helm controller is tightly integrated with the Helm SDK. A vulnerability found in the Helm SDK that affects flux2 v0.0.17 until v0.32.0 and helm-controller v0.0.4 until v0.23.0 allows for specific data inputs to cause high memory consumption. In some platforms, this could cause the controller to panic and stop processing reconciliations. In 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. Patches are available in flux2 v0.32.0 and helm-controller v0.23.0.
Products affected by CVE-2022-36049
- cpe:2.3:a:helm:helm:*:*:*:*:*:*:*:*
- cpe:2.3:a:fluxcd:flux2:*:*:*:*:*:*:*:*
- cpe:2.3:a:fluxcd:helm-controller:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-36049
0.10%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 29 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-36049
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST | |
7.7
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |
3.1
|
4.0
|
GitHub, Inc. |
CWE ids for CVE-2022-36049
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The product does not properly control the allocation and maintenance of a limited resource.Assigned by: security-advisories@github.com (Secondary)
-
The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.Assigned by: nvd@nist.gov (Primary)
References for CVE-2022-36049
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https://github.com/fluxcd/flux2/security/advisories/GHSA-p2g7-xwvr-rrw3
Helm Controller denial of service · Advisory · fluxcd/flux2 · GitHubThird Party Advisory
-
https://github.com/helm/helm/security/advisories/GHSA-7hfp-qfw3-5jxh
Denial of service through string value parsing · Advisory · helm/helm · GitHubThird Party Advisory
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https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=44996
44996 - helm:fuzz_engine_render: Out-of-memory in fuzz_engine_render - oss-fuzzMailing List;Third Party Advisory
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https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=48360
48360 - fluxcd:fuzz_helmrelease_composevalues: Out-of-memory in fuzz_helmrelease_composevalues - oss-fuzzMailing List;Third Party Advisory
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