Bug 882221

Summary: Offline sudo denies access with expired entry_cache_timeout
Product: Red Hat Enterprise Linux 6 Reporter: Nikolai Kondrashov <nikolai.kondrashov>
Component: sssdAssignee: Jakub Hrozek <jhrozek>
Status: CLOSED ERRATA QA Contact: Kaushik Banerjee <kbanerje>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 6.4CC: grajaiya, jgalipea, okos, pbrezina
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
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 09:41:43 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 888457    
Attachments:
Description Flags
Base LDIF file
none
sssd.conf
none
sssd_LDAP.log
none
sssd_sudo.log none

Description Nikolai Kondrashov 2012-11-30 12:46:56 UTC 
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 12:47:32 UTC 
Created attachment 654998 [details]
Base LDIF file
Comment 2 Nikolai Kondrashov 2012-11-30 12:48:11 UTC 
Created attachment 655001 [details]
sssd.conf
Comment 3 Nikolai Kondrashov 2012-11-30 12:50:09 UTC 
Created attachment 655002 [details]
sssd_LDAP.log
Comment 4 Nikolai Kondrashov 2012-11-30 12:50:40 UTC 
Created attachment 655004 [details]
sssd_sudo.log
Comment 6 Jakub Hrozek 2012-11-30 14:22:24 UTC 
Upstream ticket:
https://fedorahosted.org/sssd/ticket/1682
Comment 8 Nikolai Kondrashov 2012-12-14 14:45:52 UTC 
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 09:41:43 UTC 
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