Injection attack in Helm (helm helm)

CVE-2021-21303
MEDIUM 5.9

En bref

Source
NVD
EPSS
EPSS 1.07 % · centile 65 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
GitHub_M
Statut NVD
Modified

Description

Helm is open-source software which is essentially "The Kubernetes Package Manager". Helm is a tool for managing Charts. Charts are packages of pre-configured Kubernetes resources. In Helm from version 3.0 and before version 3.5.2, there a few cases where data loaded from potentially untrusted sources was not properly sanitized. When a SemVer in the `version` field of a chart is invalid, in some cases Helm allows the string to be used "as is" without sanitizing. Helm fails to properly sanitized some fields present on Helm repository `index.yaml` files. Helm does not properly sanitized some fields in the `plugin.yaml` file for plugins In some cases, Helm does not properly sanitize the fields in the `Chart.yaml` file. By exploiting these attack vectors, core maintainers were able to send deceptive information to a terminal screen running the `helm` command, as well as obscure or alter information on the screen. In some cases, we could send codes that terminals used to execute higher-order logic, like clearing a terminal screen. Further, during evaluation, the Helm maintainers discovered a few other fields that were not properly sanitized when read out of repository index files. This fix remedies all such cases, and once again enforces SemVer2 policies on version fields. All users of the Helm 3 should upgrade to the fixed version 3.5.2 or later. Those who use Helm as a library should verify that they either sanitize this data on their own, or use the proper Helm API calls to sanitize the data.

Faiblesses (CWE)

  • CWE-74 — Neutralisation incorrecte d'éléments spéciaux (injection)

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1MEDIUM 5.9CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:NGitHub_M
CVSS 3.1MEDIUM 5.9CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:NNVD · security-advisories@github.com (Secondary)
CVSS 3.1MEDIUM 6.8CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:NNVD · nvd@nist.gov (Primary)
CVSS 2.0LOW 3.5AV:N/AC:M/Au:S/C:N/I:P/A:NNVD · nvd@nist.gov (Primary)

Avis

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
helm · helmaffected > 3.0, < 3.5.2

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD