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.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2021-21303)

Note that Nessus relies on the presence of the package as reported by the vendor.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - 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. (CVE-2021-21303)

ID	Name	Product	Family	Severity
261355	Linux Distros Unpatched Vulnerability : CVE-2021-21303	Nessus	Misc.	medium
413612	SCA: security update for helm.sh/helm/v3 (GHSA-c38g-469g-cmgx)	Tenable Cloud Security	SCA Checks	medium
413612	SCA: security update for helm.sh/helm/v3 (GHSA-c38g-469g-cmgx)	Tenable Self-Hosted Container Security	SCA Checks	medium
404884	Alpine: multiple helm packages: security update to 3.6.0-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	medium
404884	Alpine: multiple helm packages: security update to 3.6.0-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	medium

Detections

Analytics

CVE-2021-21303

medium

Tenable Plugins

medium

medium

medium

medium

medium