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Security vulnerability fixed in WeeChat 3.2.1
From: |
Sébastien Helleu |
Subject: |
Security vulnerability fixed in WeeChat 3.2.1 |
Date: |
Sat, 4 Sep 2021 21:48:11 +0200 |
User-agent: |
Mutt/1.10.1 (2018-07-13) |
Hi all,
A security vulnerability has been fixed in WeeChat 3.2.1, which was released a
few hours ago: a malformed websocket frame sent to the relay plugin can cause a
buffer overflow and possibly a crash.
This happens only if you define a relay (irc or weechat), even if a password is
defined (the crash happens before the authentication of the client).
This vulnerability affects WeeChat versions from 0.4.1 to 3.2.
Some workarounds, if you can not upgrade:
- remove all relays
- unload the relay plugin
- secure relay to allow only some trusted IP addresses
(option relay.network.allowed_ips).
Thanks to Stuart Nevans Locke for reporting the problem.
For more info, please visit the WeeChat security page:
https://weechat.org/doc/security/
--
Sébastien Helleu
web: weechat.org / flashtux.org
irc: FlashCode @ irc.libera.chat
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