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Bug 1506142

Summary:	SSSD can crash due to ABI changes in libldb >= 1.2.0 (1.1.30) [rhel-7.4.z]
Product:	Red Hat Enterprise Linux 7	Reporter:	Oneata Mircea Teodor <toneata>
Component:	sssd	Assignee:	SSSD Maintainers <sssd-maint>
Status:	CLOSED ERRATA	QA Contact:	Rishabh Dave <ridave>
Severity:	high	Docs Contact:
Priority:	high
Version:	7.4	CC:	fhanzelk, fidencio, grajaiya, jhrozek, lslebodn, mkosek, mpitt, mzidek, pbrezina, sdodson, sgoveas, sssd-maint, tscherf
Target Milestone:	rc	Keywords:	ZStream
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	sssd-1.15.2-50.el7_4.7	Doc Type:	No Doc Update
Doc Text:	undefined	Story Points:	---
Clone Of:	1502713	Environment:
Last Closed:	2017-12-05 10:51:36 UTC	Type:	---
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:	1502713
Bug Blocks:

Description Oneata Mircea Teodor 2017-10-25 09:01:36 UTC

This bug has been copied from bug #1502713 and has been proposed to be backported to 7.4 z-stream (EUS).

Comment 3 Rishabh Dave 2017-11-14 17:12:15 UTC

Verified this bug on SSSD version : sssd-1.15.2-50.el7_4.7.x86_64
 
Steps followed during verification:
 
1. Get RHEL 7.4 machine and install sssd and samba. Ensure libldb version is < 1.2
 
        [root@client ~]# yum install -y sssd sssd-tools samba
        [root@client ~]# rpm -q sssd sssd-tools samba libldb
        sssd-1.15.2-50.el7.x86_64
        sssd-tools-1.15.2-50.el7.x86_64
        samba-4.6.2-8.el7.x86_64
        libldb-1.1.29-1.el7.x86_64
     
2. Configure sssd as follows:
            [root@client ~]# cat /etc/sssd/sssd.conf
            [sssd]
            config_file_version = 2
            services = nss, pam
            domains = LOCAL
     
            [domain/LOCAL]
            id_provider = local
            debug_level = 9
     
3. Start sssd service and run a user lookup.
            [root@client ~]# systemclt restart sssd
            [root@client ~]# sss_useradd localtestuser1
            [root@client ~]# id localtestuser1
            uid=1000(test) gid=1000(test) groups=1000(test)
     
4. In order to reproduce the bug, update samba and libldb to latest version provided by rhel-75 repo.
            [root@client ~]# cat /etc/yum.repos.d/rhel-75.repo
            [rhel-75]
            name=rhel-75
            baseurl=http://download.eng.pnq.redhat.com/pub/rhel/nightly/RHEL-7.5-20171108.n.0/compose/Server/x86_64/os/
            enabled=1
            gpgcheck=0
            skip_if_unavailable=1
     
            [root@server ~]# rpm -q sssd sssd-tools samba libldb
            sssd-1.15.2-50.el7.x86_64
            sssd-tools-1.15.2-50.el7.x86_64
            samba-4.7.1-1.el7.x86_64
            libldb-1.2.2-1.el7.x86_64
     
5. Restart sssd and the service should crash with segmentation fault.
     
            [root@client ~]# systemctl restart sssd
            Job for sssd.service failed because a fatal signal was delivered to the control process. See "systemctl status sssd.service" and "journalctl -xe" for details.
            [root@client ~]# /usr/sbin/sssd -i
            Segmentation fault
 
6. Upgrade SSSD to the latest z-stream version and restart sssd service.
 
        [root@client ~]# cat /etc/yum.repos.d/rhel-74z.repo
        [rhel-74z]
        name=rhel-74z
        baseurl=http://download-node-02.eng.bos.redhat.com/devel/task-repos/official/sssd/1.15.2/50.el7_4.7/x86_64/
        enabled=1
        gpgcheck=0
        skip_if_unavailable=1
 
        [root@client ~]# yum update -y samba sssd
 
        [root@client ~]# rpm -q sssd sssd-tools samba libldb
        sssd-1.15.2-50.el7_4.7.x86_64
        sssd-tools-1.15.2-50.el7_4.7.x86_64
        samba-4.6.2-8.el7.x86_64
        libldb-1.1.29-1.el7.x86_64
 
        [root@client ~]# systemclt restart sssd
 
7. Lookup a user and sssd should work without crash.
 
        [root@client ~]# id localtestuser1
        uid=1000(test) gid=1000(test) groups=1000(test)

Comment 8 errata-xmlrpc 2017-12-05 10:51:36 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.

https://access.redhat.com/errata/RHSA-2017:3379