lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Fri, 14 May 2010 08:08:46 +0300
From: Henri Salo <>
Subject: Re: Mathematica on Linux /tmp/MathLink

On Fri, 14 May 2010 11:56:10 +1000 wrote:

> "If you're doing anything technical, think Mathematica --..."
> Mathematica7 on Linux uses the /tmp/MathLink directory in insecure
> ways. Mathematica creates or re-uses an existing /tmp/MathLink
> directory, and overwrites files within and follows symlinks. This
> type of behaviour is "known unsafe" on multi-user machines e.g.
> University login servers. As a classic example of a symlink attack,
> if an "attacker" uses:
>   mkdir /tmp/MathLink; ln -s /home/victim/.bashrc /tmp/MathLink/.gshmm
> then when the victim runs Mathematica his ~/.bashrc will be clobbered.
> New files are created world-writable, allowing a complete compromise
> of the user account by linking to ~/.bash_logout . (If root ever uses
> Mathematica then the damage is greater.)
> Mathematica uses also /tmp/fonts$$.conf in insecure ways.
> Workaround: use command-line math instead of pretty interface.
> Notified on 7 May 2010, was assigned [TS 16194].
> Cheers,
> Paul Szabo
> School of Mathematics and
> Statistics   University of Sydney    Australia

Have you requested CVE-identifier for this?

Henri Salo

Full-Disclosure - We believe in it.
Hosted and sponsored by Secunia -

Powered by blists - more mailing lists