CVE-2021-33038: HyperKitty - Public Visibility of Private Mailing List Archives during Import
Summary
CVE-2021-33038: An issue was discovered in management/commands/hyperkitty_import.py in HyperKitty through 1.3.4. Affects hyperkitty versions < 1.3.5. Fixed in 1.3.5. How to fix ↓
Also tracked for
- hyperkitty · Debian:11
The same CVE-2021-33038 is tracked separately for each ecosystem and vendor. Its fix information is the same; the package and affected versions differ.
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Background
HyperKitty is a package available on PyPI that provides a web-based interface for accessing and managing mailing list archives. It is commonly used in the migration process from Mailman 2 to Mailman 3. HyperKitty allows users to import archives from private mailing lists, but a vulnerability exists in the management command 'hyperkitty_import.py' that exposes these private archives to the public during the import process. This means that sensitive information could be accessible on the web for a certain period of time, such as during a large migration.
Vulnerability Detail
The vulnerability (CVE-2021-33038) in HyperKitty allows for the public visibility of private mailing list archives during the import process. When importing archives from a private mailing list, these archives become publicly accessible for the duration of the import. This can lead to the exposure of sensitive information, potentially compromising the privacy and security of the affected mailing lists. The issue arises due to a lack of proper access controls during the import process.
How To Fix
Minimum fixed version
1.3.5
This is the first release that contains the fix.
pip install --upgrade "hyperkitty==1.3.5"Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no specific workaround mentioned for this vulnerability. Users are advised to update to the latest version of HyperKitty as soon as possible to address the issue.
Conclusion
The vulnerability in HyperKitty (CVE-2021-33038) exposes private mailing list archives to the public during the import process. This can lead to the unauthorized access and exposure of sensitive information. To mitigate this issue, it is crucial to update HyperKitty to version 1.3.5 or later. Users should promptly apply the necessary updates to ensure the privacy and security of their mailing lists. For additional support or inquiries, please contact DevNack.com.
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FAQ
The impact of this vulnerability is the potential exposure of sensitive information from private mailing list archives during the import process. This can compromise the privacy and security of the affected mailing lists.
You can use the Vulert playground at Vulert Scanner to check if your HyperKitty installation is affected by this vulnerability. Simply provide your Pipfile.lock file, and Vulert will analyze it for any known vulnerabilities, including this one.
There are no known exploits for this vulnerability at the time of this advisory. However, it is important to address the issue promptly by updating to the latest version of HyperKitty.
No, manual fixes are not recommended for this vulnerability. It is crucial to update to the latest version of HyperKitty, as it includes the necessary fixes to address the public visibility of private mailing list archives during import.
For further support on vulnerability remediation or any other questions related to HyperKitty, you can reach out to info@devnack.com.
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