Secunia CSI7
Advisories
Research
Forums
Create Profile
Our Commitment
Database
Search
Advisories by Product
Advisories by Vendor
Terminology
Report Vulnerability
Insecure Library Loading
Less critical

OpenLDAP Denial of Service Vulnerabilities

-

Release Date:  2007-10-29    Last Update:  2008-02-08    Views:  14,411

Secunia Advisory SA27424

Where:

From remote

Impact:

DoS

Solution Status:

Vendor Patch

Software:

CVE Reference(s):

Description


Some vulnerabilities have been reported in OpenLDAP, which can be exploited by malicious users to cause a DoS (Denial of Service).

1) A vulnerability is caused due to the "add_filter_attrs()" function in servers/slapd/overlay/pcache.c not correctly NULL terminating "new_attrs", which can be exploited to crash slapd due to an out of bounds memory access.

Successful exploitation may require that slapd runs as proxy-caching server.

2) An error within the normalisation of "objectClasses" can be exploited to crash a vulnerable server by sending a malformed "objectClasses" attribute.

The vulnerabilities are reported in versions prior to 2.3.39.

3) An error when performing modify operations with a NOOP control on entries stored in the BDB backend can be exploited to crash the slapd daemon.

The vulnerability is reported in versions prior to 2.3.36.

Note: Several other bugs, which may have a security impact, were also reported.


Solution:
Update to version 2.3.39.

Further details available to Secunia VIM customers

Provided and/or discovered by:
1) Tony Blake
2) Thomas Sesselmann
3) Jonathan Clarke

Original Advisory:
http://www.openldap.org/software/release/changes.html

1) http://www.openldap.org/its/index.cgi/Software%20Bugs?id=5163
2) http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=440632
http://www.openldap.org/its/index.cgi/Software%20Bugs?id=5119
3) http://www.openldap.org/its/index.cgi/Software%20Bugs?id=4925

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: OpenLDAP Denial of Service Vulnerabilities

No posts yet

-

You must be logged in to post a comment.



 Products Solutions Customers Partner Resources Company
 
 Corporate
Vulnerability Intelligence Manager (VIM)
Corporate Software Inspector (CSI)
Consumer
Personal Software Inspector (PSI)
Online Software Inspector (OSI)
 Industry
Compliance
Technology
Integration
 Customers
Testimonials
 VARS
MSSP
Technology Partners
References
 Factsheets
Reports
Webinars
Events
 About us
Careers
Memberships
Newsroom


 
© 2002-2014 Secunia ApS - Rued Langgaards Vej 8, 4th floor, DK-2300 Copenhagen, Denmark - +45 7020 5144
Terms & Conditions and Copyright - Privacy - Report Vulnerability