CVE-2022-25856: Path Traversal vulnerability in argo-events (Go)

What is CVE-2022-25856 About?

This vulnerability is a path traversal issue in Argo Events' GitArtifactReader. It allows potential attackers to read arbitrary files anywhere on the system, which can lead to information disclosure. The exploitation is relatively easy for an attacker who can control the path input.

Affected Software

github.com/argoproj/argo-events <1.7.1

Technical Details

The vulnerability resides in the (g *GitArtifactReader).Read() API which calls (g *GitArtifactReader).readFromRepository() in github.com/argoproj/argo-events. Specifically, the readFromRepository function opens and reads files within a specified directory but fails to perform checks on the file path input. An attacker can exploit this by injecting path traversal sequences (e.g., ../) or by using symbolic links within the repository artifacts to access and read files outside the intended repository directory. This allows for reading files from arbitrary locations on the file system.

What is the Impact of CVE-2022-25856?

Successful exploitation may allow attackers to read sensitive files from the compromised system, including configuration files, credentials, or other confidential data, potentially leading to further compromise or unauthorized information disclosure.

What is the Exploitability of CVE-2022-25856?

Exploiting this vulnerability is of low to medium complexity. An attacker would need the ability to control the input path provided to the GitArtifactReader, likely by crafting a malicious Git repository or artifact definition. Authentication to the Argo Events system would be a prerequisite to trigger the vulnerable functionality. This is primarily a remote exploitation scenario, assuming the attacker can interact with Argo Events. The key risk factor is the lack of proper input validation, allowing specially crafted paths to bypass security boundaries.

What are the Known Public Exploits?

PoC Author	Link	Commentary
No known exploits

What are the Available Fixes for CVE-2022-25856?

Available Upgrade Options

github.com/argoproj/argo-events
- <1.7.1 → Upgrade to 1.7.1

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Additional Resources

What are Similar Vulnerabilities to CVE-2022-25856?

Similar Vulnerabilities: CVE-2023-46049 , CVE-2023-49089 , CVE-2023-34063 , CVE-2022-41903 , CVE-2022-37466

CVE-2022-25856 Path Traversal vulnerability in argo-events (Go)