[Secure-testing-team] Bug#506530: Remote command execution and the possibility of attack with the help of symlinks

[Giuseppe Iuculano]

Package: verlihub
Severity: grave
Tags: security

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Hi,

An exploit[0] has been published for verlihub:

> Verlihub  does not sanitize user input passed to the shell via its
> "trigger"
>   mechanism.  Furthermore, the Verlihub daemon can optionally be
>   configured to
>   run  as  root.  This allows for the arbitrary execution of commands
>   by users
>   connected  to  the  hub  and,  in  the  case  of the daemon running
>   as root,
>   complete commandeering of the machine.


Also:

src/ctrigger.cpp line 108:
filename.append("/tmp/trigger.tmp"); 

Malicious user could prepare a /tmp/trigger.tmp file to cause serious
data loss or compromise a system.

Author provides a fix.

If you fix the vulnerability please also make sure to include the CVE id
(if available) in the changelog entry.


[0]http://milw0rm.com/exploits/7183

Giuseppe.

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