Gentoo Archives: gentoo-user

From: Florian Philipp <lists@×××××××××××.net>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] logrotate: /var/log/portage/elog "insecure permissions"?
Date: Sun, 28 Aug 2011 18:45:51
Message-Id: 4E5A8C84.5080605@binarywings.net
In Reply to: Re: [gentoo-user] logrotate: /var/log/portage/elog "insecure permissions"? by Mick
1 Am 28.08.2011 13:14, schrieb Mick:
2 > On Sunday 07 Aug 2011 16:20:18 Florian Philipp wrote:
3 >> Am 07.08.2011 02:22, schrieb Mick:
4 >>> On Friday 05 Aug 2011 23:08:38 Neil Bothwick wrote:
5 >>>> On Fri, 05 Aug 2011 17:59:00 +0200, Florian Philipp wrote:
6 >>>>> Yes, this was introduced in 3.8.0 to fix security issues [1]. Change
7 >>>>> your config to look like this:
8 >>>>> /var/log/portage/elog/summary.log {
9 >>>>> su portage portage
10 >>>>> ...
11 >>>>> }
12 >>>>>
13 >>>>> Disclaimer: I've not really tried this (yet) but I think I'm able to
14 >>>>> read changelogs and man-pages. ;-)
15 >>>>
16 >>>> Yes that fixes it. The latest portage ebuilds include an updated config
17 >>>> file.
18 >>>
19 >>> Hmm ... it still complains here!
20 >>>
21 >>> error: error setting owner of
22 >>> /var/log/portage/elog/summary.log-20110801.gz: Operation not permitted
23 >>>
24 >>>
25 >>> This is my /etc/logrotate.d/elog-save-summary:
26 >>> ===================================
27 >>> /var/log/portage/elog/summary.log {
28 >>>
29 >>> su portage portage
30 >>>
31 >>> missingok
32 >>> nocreate
33 >>> delaycompress
34 >>>
35 >>> }
36 >>> ===================================
37 >>>
38 >>> # ls -la /var/log/portage/elog/summary.log
39 >>> -rw-rw-r-- 1 root portage 4326 Aug 6 09:44
40 >>> /var/log/portage/elog/summary.log
41 >>>
42 >>> Can you see anything amiss?
43 >>
44 >> At least on my system, /var/log/portage has the following permissions:
45 >> drwxr-xr-x root root
46 >>
47 >> Only root can write, therefore the config must read
48 >>
49 >> /var/log/portage/elog/summary.log {
50 >> su root portage
51 >> missingok
52 >> nocreate
53 >> delaycompress
54 >> }
55 >
56 > The latest logrotate update wanted to change the above line from su root
57 > portage to su portage portage ...
58 >
59 > Should I be changing the ownership of /var/log/portage and /var/log/portage
60 > elog?
61
62 Unless portage now drops privileges from root:portage to portage:portage
63 for writing logs, no one except root should be allowed to write in
64 /var/log/portage. So, from my point of view, the answer is no.
65
66 It seems so:
67 https://bugs.gentoo.org/show_bug.cgi?id=374287
68 https://bugs.gentoo.org/show_bug.cgi?id=378451
69
70 This version of portage has just been stabilized this week.
71
72 Regards,
73 Florian Philipp

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Re: [gentoo-user] logrotate: /var/log/portage/elog "insecure permissions"? Florian Philipp <lists@×××××××××××.net>