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cvelistGitHub_MCVELIST:CVE-2022-23526
HistoryDec 15, 2022 - 12:43 a.m.

CVE-2022-23526 Helm contains Denial of service through schema file

2022-12-1500:43:40
CWE-476
GitHub_M
www.cve.org
helm
null pointer dereference
chartutil
denial of service
schema file
kubernetes
sdk
patched
memory violation

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

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

8.4 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

37.9%

Helm is a tool for managing Charts, pre-configured Kubernetes resources. Versions prior to 3.10.3 are subject to NULL Pointer Dereference in the_chartutil_ package that can cause a segmentation violation. The chartutil package contains a parser that loads a JSON Schema validation file. For example, the Helm client when rendering a chart will validate its values with the schema file. The chartutil package parses the schema file and loads it into structures Go can work with. Some schema files can cause array data structures to be created causing a memory violation. Applications that use the chartutil package in the Helm SDK to parse a schema file can suffer a Denial of Service when that input causes a panic that cannot be recovered from. Helm is not a long running service so the panic will not affect future uses of the Helm client. This issue has been patched in 3.10.3. SDK users can validate schema files that are correctly formatted before passing them to the chartutil functions.

CNA Affected

[
  {
    "vendor": "helm",
    "product": "helm",
    "versions": [
      {
        "version": "< v3.10.3",
        "status": "affected"
      }
    ]
  }
]

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

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

8.4 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

37.9%