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Debian LTS Advisory DLA-2770-1                [email protected]
https://www.debian.org/lts/security/                          Adrian Bunk
September 30, 2021                            https://wiki.debian.org/LTS
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Package        : weechat
Version        : 1.6-1+deb9u3
CVE ID         : CVE-2020-8955 CVE-2020-9759 CVE-2020-9760 CVE-2021-40516
Debian Bug     : 951289 993803

Several vulnerabilities were fixed in the chat client WeeChat.


    A crafted irc message 324 (channel mode) could result in a crash.


    A crafted irc message 352 (who) could result in a crash.


    A crafted irc message 005 (setting a new mode for a nick) could 
    result in a crash.


    A crafted WebSocket frame could result in a crash in the Relay plugin.

For Debian 9 stretch, these problems have been fixed in version

We recommend that you upgrade your weechat packages.

For the detailed security status of weechat please refer to
its security tracker page at:

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS