Bug 679542
| Summary: | empty modify operation with repl on or lastmod off will crash server | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Rich Megginson <rmeggins> |
| Component: | 389-ds-base | Assignee: | Rich Megginson <rmeggins> |
| Status: | CLOSED ERRATA | QA Contact: | Chandrasekar Kannan <ckannan> |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | 6.1 | CC: | amsharma, benl, nkinder, security-response-team, shaines, vdanen |
| Target Milestone: | rc | Keywords: | screened |
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | 389-ds-base-1.2.8-0.3.a3.el6 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | 675320 | Environment: | |
| Last Closed: | 2011-05-19 12:42:00 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: | 675320 | ||
| Bug Blocks: | 639035, 656390, 676876 | ||
|
Comment 1
Rich Megginson
2011-02-24 02:35:40 UTC
Seems that Huzaifa already did that, so you should be ok now. Hi,
I am testing this bug to verify the fix.
I have 389, 1.2.8 and executed below steps :
1) You have to have a client capable of sending an empty modify request -
mozldap ldapmodify will not let you do this, but openldap ldapmodify will:
# /usr/bin/ldapmodify -x <<EOF
dn:
EOF
It will warn, but allow the modify through.
<Amita>
[root@amsharma reslimit]# ldapmodify -x -h localhost -p 1389 -D "cn=Directory Manager" -w pwd << EOF
dn:
EOF
modifying entry ""
</Amita>
2) You have to be using a server built with mozldap - servers built with
openldap will return an LDAP error when receiving an empty modify request
<Amita>
Sorry, I could not do this as mozldap is deprecated.
</Amita>
3) Either the modify operation is replicated, or the server has set cn=config
nsslapd-lastmod: off
<Amita>
[root@amsharma reslimit]# ldapsearch -x -h localhost -p 1389 -D "cn=Directory Manager" -w pwd -b "cn=config" | grep nsslapd-lastmod
nsslapd-lastmod: on
[root@amsharma reslimit]# ldapmodify -x -h localhost -p 1389 -D "cn=Directory Manager" -w pwd << EOF
> dn: cn=config
> changetype: modify
> replace: nsslapd-lastmod
> nsslapd-lastmod: off
> EOF
modifying entry "cn=config"
[root@amsharma reslimit]# ldapsearch -x -h localhost -p 1389 -D "cn=Directory Manager" -w pwd -b "cn=config" | grep nsslapd-lastmod
nsslapd-lastmod: off
[root@amsharma reslimit]#
</Amita>
If these conditions are met, the empty modify operation will crash the server.
<Amita>
Server was up and running, no crash found.
I am putting this bug as VERIFIED, please revert in case of any more actions required.
</Amita>
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 therefore 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. http://rhn.redhat.com/errata/RHEA-2011-0533.html |