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Bug 163881 - Cron no longer allows read-only crontabs, enforces write access
Summary: Cron no longer allows read-only crontabs, enforces write access
Alias: None
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: vixie-cron
Version: 4.0
Hardware: All
OS: Linux
Target Milestone: ---
: ---
Assignee: Jason Vas Dias
QA Contact: Brock Organ
Depends On: 142953
Blocks: 156322
TreeView+ depends on / blocked
Reported: 2005-07-21 19:25 UTC by Jason Vas Dias
Modified: 2007-11-30 22:07 UTC (History)
1 user (show)

Fixed In Version: RHSA-2005-361
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2005-10-05 12:34:53 UTC
Target Upstream Version:

Attachments (Terms of Use)

System ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2005:361 qe-ready SHIPPED_LIVE Low: vixie-cron security update 2005-10-05 04:00:00 UTC

Description Jason Vas Dias 2005-07-21 19:25:52 UTC
+++ This bug was initially created as a clone of Bug #142953 +++

Description of problem:
In previous releases of FC it was possible to have r/o crontab files,
for example an rpm which needs cron entries might drop a file
into /etc/cron.d/my-package which was mode 444 or similar.

This no longer works - the check in database.c around line 260
has the following code:-
	if ((statbuf->st_mode & 07733) != 0600) {
		log_it(fname, getpid(), "BAD FILE MODE", tabname);
		goto next_crontab;
which *enforces* the owner write bit.

Although it may not be good practice to make these r/o (I would be
prepared to argue this point), enforcing writability seems
counter-intuitive, especially when you end up reading the damn source
code to find out just what is wrong :-)

Version-Release number of selected component (if applicable):

How reproducible:
Every time

Steps to Reproduce:
1. install -m444 mycrontab /etc/cron.d/mycrontab
2. look at output in /var/log/cron

Additional info:

Comment 1 Jason Vas Dias 2005-07-21 20:55:37 UTC
Fixed for bug Bug #142953 with vixie-cron-4.1-36.EL4.

Comment 6 Red Hat Bugzilla 2005-10-05 12:34:53 UTC
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

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