CVE-2024-26147 Helm's Missing YAML Content Leads To Panic

2024-02-2122:21:42

CWE-457

GitHub_M

github.com

helm

package manager

charts

kubernetes

vulnerability

uninitialized variable

index.yaml

plugin.yaml

panic

sdk

malicious plugin

filesystem

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation

none

Automatable

yes

Technical Impact

partial

JSON

Helm is a package manager for Charts for Kubernetes. Versions prior to 3.14.2 contain an uninitialized variable vulnerability when Helm parses index and plugin yaml files missing expected content. When either an index.yaml file or a plugins plugin.yaml file were missing all metadata a panic would occur in Helm. In the Helm SDK, this is found when using the LoadIndexFile or DownloadIndexFile functions in the repo package or the LoadDir function in the plugin package. For the Helm client this impacts functions around adding a repository and all Helm functions if a malicious plugin is added as Helm inspects all known plugins on each invocation. This issue has been resolved in Helm v3.14.2. If a malicious plugin has been added which is causing all Helm client commands to panic, the malicious plugin can be manually removed from the filesystem. If using Helm SDK versions prior to 3.14.2, calls to affected functions can use recover to catch the panic.

ADP Affected

[
  {
    "cpes": [
      "cpe:2.3:a:helm:helm:*:*:*:*:*:*:*:*"
    ],
    "vendor": "helm",
    "product": "helm",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "3.14.2",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unknown"
  }
]