Bug 882221 – Offline sudo denies access with expired entry_cache_timeout

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Bug 882221 - Offline sudo denies access with expired entry_cache_timeout

Summary:	Offline sudo denies access with expired entry_cache_timeout

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise Linux 6
Classification:	Red Hat
Component:	sssd (Show other bugs)
Sub Component:
Version:	6.4
Hardware:	Unspecified Unspecified

Priority	unspecified Severity unspecified
Target Milestone:	rc
Target Release:	---
Assigned To:	Jakub Hrozek
QA Contact:	Kaushik Banerjee
Docs Contact:

URL:
Whiteboard:
Keywords:

Depends On:
Blocks:	888457
	Show dependency tree / graph

Reported:	2012-11-30 07:46 EST by Nikolai Kondrashov
Modified:	2013-02-21 04:41 EST (History)
CC List:	4 users (show)

See Also:
Fixed In Version:	sssd-1.9.2-41.el6
Doc Type:	Bug Fix
Doc Text:	No documentation needed.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2013-02-21 04:41:43 EST
Type:	Bug
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Base LDIF file (3.06 KB, text/plain) 2012-11-30 07:47 EST, Nikolai Kondrashov	no flags	Details
sssd.conf (578 bytes, text/plain) 2012-11-30 07:48 EST, Nikolai Kondrashov	no flags	Details
sssd_LDAP.log (360.03 KB, text/plain) 2012-11-30 07:50 EST, Nikolai Kondrashov	no flags	Details
sssd_sudo.log (40.53 KB, text/plain) 2012-11-30 07:50 EST, Nikolai Kondrashov	no flags	Details
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2013:0508	normal	SHIPPED_LIVE	Low: sssd security, bug fix and enhancement update	2013-02-20 16:30:10 EST

Groups: None (edit)

Description Nikolai Kondrashov 2012-11-30 07:46:56 EST

Description of problem:
Sudo denies access when the LDAP server is offline and entry_cache_timeout is expired. Additionally, the response time in this case is very long.

Version-Release number of selected component (if applicable):
sssd-1.9.2-21.el6.x86_64
sssd-client-1.9.2-21.el6.x86_64
libsss_idmap-1.9.2-21.el6.x86_64
sudo-1.8.6p3-5.el6.x86_64
libsss_sudo-1.9.2-21.el6.x86_64

How reproducible:
always

Steps to Reproduce:
1. Use the attached LDIF file to fill LDAP directory.
2. Use the attached sssd.conf as the base for SSSD configuration.
3. Execute the following as root:
su -c 'sudo -u user2 true' user1 && echo allowed || echo denied
iptables -I OUTPUT -d server.sss-test.test -p tcp --dport ldaps -j REJECT --reject-with icmp-host-unreachable
su -c 'sudo -u user2 true' user1 && echo allowed || echo denied
  
Actual results:
allowed
sudo: no tty present and no askpass program specified
denied

Expected results:
allowed
allowed

Additional info:
The online request takes about 1.5 seconds. The offline request takes about two minutes. Considering that "host unreacheable" response is received immediately that is a very long overall response time.

Comment 1 Nikolai Kondrashov 2012-11-30 07:47:32 EST

Created attachment 654998 [details]
Base LDIF file

Comment 2 Nikolai Kondrashov 2012-11-30 07:48:11 EST

Created attachment 655001 [details]
sssd.conf

Comment 3 Nikolai Kondrashov 2012-11-30 07:50:09 EST

Created attachment 655002 [details]
sssd_LDAP.log

Comment 4 Nikolai Kondrashov 2012-11-30 07:50:40 EST

Created attachment 655004 [details]
sssd_sudo.log

Comment 6 Jakub Hrozek 2012-11-30 09:22:24 EST

Upstream ticket:
https://fedorahosted.org/sssd/ticket/1682

Comment 8 Nikolai Kondrashov 2012-12-14 09:45:52 EST

Verified fixed with the following packages:

sssd-client-1.9.2-41.el6.x86_64
libsss_idmap-1.9.2-41.el6.x86_64
libsss_sudo-1.9.2-41.el6.x86_64
sudo-1.8.6p3-6.el6.x86_64
sssd-1.9.2-41.el6.x86_64

Corresponding sudo suite output:

:: [   PASS   ] :: offline_allowed
:: [   PASS   ] :: offline_denied

Comment 9 errata-xmlrpc 2013-02-21 04:41:43 EST

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHSA-2013-0508.html

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