CVE-2025-32784: conda-forge-webservices has an Unauthorized Artifact Modification Race Condition
First published: Tue Apr 15 2025(Updated: )
conda-forge-webservices is the web app deployed to run conda-forge admin commands and linting. In versions prior to 2025.4.10, a race condition vulnerability has been identified in the conda-forge-webservices component used within the shared build infrastructure. This vulnerability, categorized as a Time-of-Check to Time-of-Use (TOCTOU) issue, can be exploited to introduce unauthorized modifications to build artifacts stored in the cf-staging Anaconda channel. Exploitation may result in the unauthorized publication of malicious artifacts to the production conda-forge channel. The core vulnerability results from the absence of atomicity between the hash validation and the artifact copy operation. This gap allows an attacker, with access to the cf-staging token, to overwrite the validated artifact with a malicious version immediately after hash verification, but before the copy action is executed. As the cf-staging channel permits artifact overwrites, such an operation can be carried out using the anaconda upload --force command. This vulnerability is fixed in 2025.4.10.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| conda-forge-webservices | <2025.4.10 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2025-32784?
The severity of CVE-2025-32784 is categorized based on its potential impact, but detailed metrics are not specified here.
How do I fix CVE-2025-32784?
To fix CVE-2025-32784, update the conda-forge-webservices to version 2025.4.10 or later.
What versions of conda-forge-webservices are affected by CVE-2025-32784?
CVE-2025-32784 affects all versions of conda-forge-webservices prior to version 2025.4.10.
What is a race condition as mentioned in CVE-2025-32784?
A race condition in CVE-2025-32784 refers to a situation where two or more processes access shared resources concurrently, leading to inconsistent results.
Is there a workaround for CVE-2025-32784 if I can't upgrade?
There is no specific workaround for CVE-2025-32784 other than upgrading to a fixed version.
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