Re: CVE Request (minor) -- mc: Improper sanitization of MC_EXT_SELECTED variable when viewing multiple files

[Kurt Seifried <kseifried () redhat com>]

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On 10/03/2012 09:36 AM, Jan Lieskovsky wrote:
> Hello Kurt, Steve, vendors,
>
> based on https://bugs.gentoo.org/show_bug.cgi?id=436518:
>
> A security flaw was found in the way Midnight Commander, a
> user-friendly text console file manager and visual shell, performed
> sanitization of MC_EXT_SELECTED environment variable when multiple
> files were selected (first selected file was used as actual content
> of the MC_EXT_SELECTED variable, while the remaining files were 
> provided as arguments to the temporary script, handling the F3 /
> Enter key press event). A remote attacker could provide a
> specially-crafted archive that, when expanded and previewed by the
> victim could lead to arbitrary code execution with the privileges
> of the user running mc executable.
>
> References: [1] https://bugs.gentoo.org/show_bug.cgi?id=436518
>
> Upstream ticket: [2]
> https://www.midnight-commander.org/ticket/2913
>
> I need to confess this one is a bit on the border (the attack to
> succeed the victim would need to perform couple of steps), but
> basically the scenario is possible.
>
> Could you allocate a CVE id for this one?
>
> Thank you && Regards, Jan. -- Jan iankko Lieskovsky / Red Hat
> Security Response Team

Please use CVE-2012-4463 for this issue.

- -- 
Kurt Seifried Red Hat Security Response Team (SRT)
PGP: 0x5E267993 A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993

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