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Category:   Application (Directory)  >   OpenLDAP Vendors:   OpenLDAP.org
OpenLDAP Double Free Memory Error Lets Remote Authenticated Users Cause the Target slapd Service to Crash
SecurityTracker Alert ID:  1038591
SecurityTracker URL:  http://securitytracker.com/id/1038591
CVE Reference:   CVE-2017-9287   (Links to External Site)
Date:  May 31 2017
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in OpenLDAP. A remote authenticated user can cause the target service to crash.

A remote authenticated user that can search the directory can issue a specially crafted search query that includes the Paged Results control set to a page size of 0 to trigger a double free memory error in 'servers/slapd/back-mdb/search.c' and cause the target slapd service to crash.

Karsten Heymann reported this vulnerability.

Impact:   A remote authenticated user can cause the target slapd service to crash.
Solution:   The vendor has issued a source code fix, available at:

https://www.openldap.org/devel/gitweb.cgi?p=openldap.git;a=commit;h=0cee1ffb6021b1aae3fcc9581699da1c85a6dd6e

Vendor URL:  www.openldap.org/its/?findid=8655 (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Jun 1 2017 (Ubuntu Issues Fix) OpenLDAP Double Free Memory Error Lets Remote Authenticated Users Cause the Target slapd Service to Crash
Ubuntu has issued a fix for Ubuntu Linux 14.04 LTS, 16.04 LTS, 16.10, and 17.04.
Jul 20 2017 (Ubuntu Issues Fix) OpenLDAP Double Free Memory Error Lets Remote Authenticated Users Cause the Target slapd Service to Crash
Ubuntu has issued a fix for Ubuntu Linux 12.04 ESM.
Aug 1 2017 (Red Hat Issues Fix) OpenLDAP Double Free Memory Error Lets Remote Authenticated Users Cause the Target slapd Service to Crash
Red Hat has issued a fix for Red Hat Enterprise Linux 7.
Aug 10 2017 (Oracle Issues Fix for Oracle Linux) OpenLDAP Double Free Memory Error Lets Remote Authenticated Users Cause the Target slapd Service to Crash
Oracle has issued a fix for Oracle Linux 7.



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