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CVE-2020-15186— Improper sanitization of plugin names in Helm

Quick assessment

Affected
helm helm
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

helm是一款Kubernetes包管理器。 Helm 2.16.11 之前版本和3.3.2版本存在注入漏洞，该漏洞源于没有正确清理插件名，攻击者可利用该漏洞在插件名称中使用非法字符进行攻击。

CVSS 3.4 · Low EPSS 0.96% · P60

Possible ATT&CK Techniques 1 AI

T1609 · Container Administration Command
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I. Basic Information for CVE-2020-15186

Vulnerability Information
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Vulnerability Title
Improper sanitization of plugin names in Helm
Source: CVE Program / CVE List V5
Vulnerability Description
In Helm before versions 2.16.11 and 3.3.2 plugin names are not sanitized properly. As a result, a malicious plugin author could use characters in a plugin name that would result in unexpected behavior, such as duplicating the name of another plugin or spoofing the output to `helm --help`. This issue has been patched in Helm 3.3.2. A possible workaround is to not install untrusted Helm plugins. Examine the `name` field in the `plugin.yaml` file for a plugin, looking for characters outside of the [a-zA-Z0-9._-] range.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
helm 注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
helm是一款Kubernetes包管理器。 Helm 2.16.11 之前版本和3.3.2版本存在注入漏洞，该漏洞源于没有正确清理插件名，攻击者可利用该漏洞在插件名称中使用非法字符进行攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
helm helm >= 2.0.0, < 2.16.11 -

II. Public POCs for CVE-2020-15186

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III. Intelligence Information for CVE-2020-15186

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Patches & Fixes for CVE-2020-15186 (1)

Vendor Advisories for CVE-2020-15186 (1)

Same Patch Batch · helm · 2020-09-17 · 4 CVEs total

CVE-2020-15184 3.7 LOW Aliases are never checked in Helm
CVE-2020-15187 3.0 LOW Duplicate plugin entries in Helm
CVE-2020-15185 2.2 LOW Duplicated chart entries in Helm

IV. Related Vulnerabilities

Same product: helm
Same vendor: helm
Same weakness: CWE-20

V. Comments for CVE-2020-15186

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