Debian Linux Security Advisory 4922-1 - Amir Sarabadani and Kunal Mehta discovered that the import functionality of Hyperkitty, the web user interface to access Mailman 3 archives, did not restrict the visibility of private archives during the import, i.e. that during the import of a private Mailman 2 archive the archive was publicly accessible until the import completed.
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Debian Security Advisory DSA-4922-1 security@debian.org
https://www.debian.org/security/ Moritz Muehlenhoff
May 29, 2021 https://www.debian.org/security/faq
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Package : hyperkitty
CVE ID : CVE-2021-33038
Amir Sarabadani and Kunal Mehta discovered that the import functionality
of Hyperkitty, the web user interface to access Mailman 3 archives, did
not restrict the visibility of private archives during the import, i.e.
that during the import of a private Mailman 2 archive the archive was
publicly accessible until the import completed.
For the stable distribution (buster), this problem has been fixed in
version 1.2.2-1+deb10u1.
We recommend that you upgrade your hyperkitty packages.
For the detailed security status of hyperkitty please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/hyperkitty
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org
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