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GHSA-qq3j-xp49-j73f
No affected components available
The Helm core maintainers have identified an information disclosure vulnerability in Helm 3.0.0-3.2.3.
Impact
A traversal attack is possible when installing Helm plugins from a tar archive over HTTP. It is possible for a malicious plugin author to inject a relative path into a plugin archive, and copy a file outside of the intended directory.
Traversal Attacks are a form of a Directory Traversal that can be exploited by extracting files from an archive. The premise of the Directory Traversal vulnerability is that an attacker can gain access to parts of the file system outside of the target folder in which they should reside. The attacker can then overwrite executable files and either invoke them remotely or wait for the system or user to call them, thus achieving Remote Command Execution on the victim's machine. The vulnerability can also cause damage by overwriting configuration files or other sensitive resources, and can be exploited on both client (user) machines and servers.
https://snyk.io/research/zip-slip-vulnerability
Specific Go Packages Affected
helm.sh/helm/v3/pkg/plugin/installer
Patches
This issue has been fixed in Helm 3.2.4
For more information
If you have any questions or comments about this advisory:
- Open an issue in the Helm repository
- For security-specific issues, email us at cncf-helm-security@lists.cncf.io
The vulnerability can be exploited over the network without needing physical access. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker needs basic access or low-level privileges. The attacker needs the user to perform some action, like clicking a link. The impact is confined to the system where the vulnerability exists. There is a low impact on the confidentiality of the information. There is a low impact on the integrity of the data.
Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.
Probability that this vulnerability will be exploited in the wild within the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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