>From the OpenBSD security advisory

>Errata patches for OpenSMTPD have been released for OpenBSD 6.5 and 6.6.
>
>smtpd can crash on opportunistic TLS downgrade, causing a denial of service.
>
>Binary updates for the amd64, i386, and arm64 platforms are available via
>the syspatch utility. Source code patches can be found on the respective
>errata page
>
>An incorrect check allows an attacker to trick mbox delivery into executing
>arbitrary commands as root and lmtp delivery into executing arbitrary commands
>as an unprivileged user.
>
>Binary updates for the amd64, i386, and arm64 platforms are available via
>the syspatch utility. Source code patches can be found on the respective
>errata page

https://marc.info/?l=openbsd-announce&m=158025067728747&w=2
https://marc.info/?l=openbsd-announce&m=158025060628722&w=2

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