Symlink Vulnerability in Helm 2.x by Kubernetes
CVE-2019-18658

9.8CRITICAL

Key Information:

Vendor

Helm

Status
Helm
Vendor
CVE Published:
12 November 2019

What is CVE-2019-18658?

In Helm versions 2.0.0 through 2.15.1, the handling of chart directories and packaging mechanism may allow a malicious chart to disclose sensitive files, such as /etc/passwd, and potentially cause a denial of service (DoS) by leveraging special files like /dev/urandom through symlink manipulation. This vulnerability affects only the client side, with no known impact on Tiller.

References

https://helm.sh/blog/2019-10-30-helm-symlink-security-not...
x_refsource_MISC

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.