Bug 385 – PAGER & LESS variables won't be forwarded

Bug 385 - PAGER & LESS variables won't be forwarded


Summary:	PAGER & LESS variables won't be forwarded

Status:	RESOLVED INVALID

Product:	Sudo
Classification:	Unclassified
Component:	Sudo
Version:	1.7.2
Hardware:	PC Linux

Importance:	low normal
Assigned To:	Todd C. Miller

URL:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2009-12-21 13:54 MST by C3PO
Modified:	2010-05-07 13:30 MDT (History)
CC List:	0 users

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Description C3PO 2009-12-21 13:54:59 MST

when user enters #sudo su, the variables LESS and PAGER from the current environment won't be forwarded. This behavior differs from the previous versions (any reasons?). The absence of PAGER and LESS affects man pages formatting, ( ESC[1m )

Temporary workaround:

adding Defaults	env_reset,env_keep+="PAGER, LESS" will fix the problem

Comment 1 Todd C. Miller 2010-05-07 13:30:33 MDT

Starting with version 1.6.9, sudo starts commands with a fresh environment that only contains a few variables.  I don't think it is appropriate to include PAGER or LESS in this list as those variables can be used to cause programs like man to run arbitrary commands.

You can get the pre-1.6.9 behavior by negating the "env_reset" Defaults setting in sudoers or by adding the variables you wish to preserver to the env_keep list.