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List:       oss-security
Subject:    Re: [oss-security] cantata: cantata-mounter D-Bus service local privilege escalation and other secur
From:       Matthias Gerstner <mgerstner () suse ! de>
Date:       2018-06-19 7:59:53
Message-ID: 20180619075953.GA8469 () f195 ! suse ! de
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> A) The mount target path check in mounter.cpp `mpOk()` is insufficient.
>   A regular user can this way mount a CIFS filesystem anywhere, and not
>   just beneath /home by passing relative path components.

This was assigned CVE-2018-12559.

> B) Arbitrary unmounts can be performed by regular users the same way.

This was assigned CVE-2018-12560.

> C) A regular user can inject additional mount options like file_mode= by
>   manipulating e.g. the domain parameter of the samba URL.

This was assigned CVE-2018-12561.

> D) The wrapper script 'mount.cifs.wrapper' uses the shell to forward the
>   arguments to the actual mount.cifs binary. The shell evaluates
>   wildcards which can also be injected like this:

This was assigned CVE-2018-12562.

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