Vulnerability identifier: #VU30626
Vulnerability risk: High
CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-59
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Helm
Web applications /
CMS
Vendor: The Helm Project
Description
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
In Helm 2.x before 2.15.2, commands that deal with loading a chart as a directory or packaging a chart provide an opportunity for a maliciously designed chart to include sensitive content such as /etc/passwd, or to execute a denial of service (DoS) via a special file such as /dev/urandom, via symlinks. No version of Tiller is known to be impacted. This is a client-only issue.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Helm: 2.0.0 - 2.15.1
External links
http://helm.sh/blog/2019-10-30-helm-symlink-security-notice/
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.