Credentials disclosure in Helm

1) Information disclosure

EUVDB-ID: #VU54184

Risk: Medium

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-32690

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to the way Helm retrieves chart archives from external URLs. When a username and password are associated with a Helm repository, the username and password are also passed on to other domains referenced in the index.yaml file while retrieving a specific chart archive on the other domain.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Helm: 1.0 - 3.6.0

External links

http://github.com/helm/helm/releases/tag/v3.6.1
http://github.com/helm/helm/security/advisories/GHSA-56hp-xqp3-w2jf

Q & A

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.