CVE-2021-33038

Public Exploit

Description

An issue was discovered in management/commands/hyperkitty_import.py in HyperKitty through 1.3.4. When importing a private mailing list's archives, these archives are publicly visible for the duration of the import. For example, sensitive information might be available on the web for an hour during a large migration from Mailman 2 to Mailman 3.

References

Link	Tags
https://gitlab.com/mailman/hyperkitty/-/issues/380	issue tracking patch exploit third party advisory
https://gitlab.com/mailman/hyperkitty/-/commit/9025324597d60b2dff740e49b70b15589d6804fa	third party advisory patch
https://www.debian.org/security/2021/dsa-4922	third party advisory vendor advisory
https://techblog.wikimedia.org/2021/06/11/discovering-and-fixing-cve-2021-33038-in-mailman3/	third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-33038?: CVE-2021-33038 has been scored as a high severity vulnerability.
How to fix CVE-2021-33038?: To fix CVE-2021-33038, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-33038 being actively exploited in the wild?: It is possible that CVE-2021-33038 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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Description

Category

CWE-276 – Incorrect Default Permissions

References

Frequently Asked Questions