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Date: Sun, 14 Dec 2014 17:20:28 +0100
From: Jakub Wilk <>
Subject: Re: Abusing TZ for fun (and little profit)

* Jakub Wilk <>, 2014-10-16, 00:35:
>By default, sudo preserves the TZ variable[1] from user's environment. 
>This is a bad idea on glibc systems, where TZ can be abused to trick 
>the program to read an arbitrary file.

Oh, and the glibc's tzfile parser is apparently not very robust:

Jakub Wilk

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