Re: RH 6.1 / 6.2 minicom vulnerability

[Ben Lull <blull () valleylocal com>]

Slackware 7.0 (minicom 1.82):
    plix@technolust:/home/plix> groups
    secure wheel xuser plix

    plix@technolust:/home/plix> minicom -C foo
    minicom: cannot open /dev/ttyS1: Permission denied

    plix@technolust:/home/plix> ls -al foo
    -rw-r--r--   1 plix     uucp            0 Aug 22 12:36 foo
    plix@technolust:/home/plix>


Slackware 7.1 (minicom 1.82.1)
    plix@mos:/home/plix> groups
    users

    plix@mos:/home/plix> minicom -C foo
    minicom: cannot open /dev/ttyS1: Permission denied

    plix@mos:/home/plix> ls -al foo
    -rw-r--r--   1 plix     uucp            0 Aug 22 12:39 foo


-- Yep Slackware too using minicom 1.82 and 1.82.1

Thanks,
Ben Lull

***
* Ben Lull
* Valley Local Internet, Inc.
* Systems Administrator
***



Michal Zalewski wrote:

> On RedHat 6.1 and RedHat 6.2 boxes (I haven't found other
distributions
> vulnerable):
>
> @(#)Minicom V1.83.0 (compiled Mar  7 2000)(c) Miquel van Smoorenburg
>
> [lcamtuf@nimue lcamtuf]$ minicom -C foo
> minicom: there is no global configuration file /etc/minirc.dfl
> Ask your sysadm to create one (with minicom -s).
>
> [lcamtuf@nimue lcamtuf]$ ls -l foo
> -rw-rw-r--   1 lcamtuf  uucp            0 Aug 18 12:21 foo
>     ^^                  ^^^^
>
> Any file can be created anywhere with uucp privledges - it will follow

> symlinks. Not nice on systems running uucp services.
>
> _______________________________________________________
> Michal Zalewski [lcamtuf () tpi pl] [tp.internet/security]
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