[Mailman-Users] Malicious Third-Party Unsubscription Requests

2022-07-09 Thread Karl Semich
Hi,

I'm experiencing mailbombing via spoofed unsubscription and
subscription requests from mailman lists. Mostly unsubscription
requests from a mailman 2.1 list.

I have a mental disability and the mailbombing is confusing and taxing to me.

Is there any configuration option I can ask the list administrator to
enable, to require my password to be provided before the confirmations
are sent to me?

If this configuration option does not exist yet, could anybody advise
what sourcefiles would need modification so as to contribute it as a
feature addition?

Thanks a bunch,
Karl Semich
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[Mailman-Users] DOS vulnerability, gmail and yahoo

2023-09-19 Thread Karl Semich
Hi mailman-users,

So you know, it looks like there is a vulnerability with mailman
2 where a third party can very aggressively spoof password reminder,
unsubscription, or other requests using the web interface, queueing
tens of thousands of unsolicited messages to any given subscriber.

Worse, if this is done to a user of gmail or yahoo, the receiving
hosts may block the mailserver’s ip address generally, preventing the delivery
of legitimate list content to other subscribers using the same
provider.

There should probably be a rate limit on the web interface, although I
understand mailman 2 is no longer developed.
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