What is CVE-2017-17740?

CVE-2017-17740 is a vulnerability in OpenLDAP through version 2.4.45 that allows remote attackers to cause a denial of service (slapd crash) by exploiting a buffer free operation.

How severe is CVE-2017-17740?

CVE-2017-17740 has a severity rating of 7.5 (high).

What software is affected by CVE-2017-17740?

Openldap (version 2.4.45), openSUSE Leap 15.0, openSUSE Leap 15.1, Oracle Blockchain Platform (up to version 21.1.2), and McAfee Policy Auditor (up to version 6.5.1) are affected by CVE-2017-17740.

How can CVE-2017-17740 be exploited?

CVE-2017-17740 can be exploited by enabling both the nops module and the memberof overlay in OpenLDAP, which causes a buffer that was allocated on the stack to be freed, leading to a denial of service.

Are there any references available for CVE-2017-17740?

Yes, you can refer to the following links for more information: [http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00053.html](http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00053.html) and [http://www.openldap.org/its/index.cgi/Incoming?id=8759](http://www.openldap.org/its/index.cgi/Incoming?id=8759).

Vulnerability/
CVE-2017-17740

high

7.5

18/12/2017

13/6/2022

CVE-2017-17740

First published: Mon Dec 18 2017(Updated: )

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
Openldap Openldap	<=2.4.45
openSUSE Leap	=15.0
openSUSE Leap	=15.1
Oracle Blockchain Platform	<21.1.2
McAfee Policy Auditor	<6.5.1

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Frequently Asked Questions

What is CVE-2017-17740?
CVE-2017-17740 is a vulnerability in OpenLDAP through version 2.4.45 that allows remote attackers to cause a denial of service (slapd crash) by exploiting a buffer free operation.
How severe is CVE-2017-17740?
CVE-2017-17740 has a severity rating of 7.5 (high).
What software is affected by CVE-2017-17740?
Openldap (version 2.4.45), openSUSE Leap 15.0, openSUSE Leap 15.1, Oracle Blockchain Platform (up to version 21.1.2), and McAfee Policy Auditor (up to version 6.5.1) are affected by CVE-2017-17740.
How can CVE-2017-17740 be exploited?
CVE-2017-17740 can be exploited by enabling both the nops module and the memberof overlay in OpenLDAP, which causes a buffer that was allocated on the stack to be freed, leading to a denial of service.
Are there any references available for CVE-2017-17740?
Yes, you can refer to the following links for more information: [http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00053.html](http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00053.html) and [http://www.openldap.org/its/index.cgi/Incoming?id=8759](http://www.openldap.org/its/index.cgi/Incoming?id=8759).

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