CVE-2017-17740: Buffer Overflow
contrib/slapd-modules/nops/nops.c in OpenLDAP through 2.4.45, when both the nops module and the memberof overlay are enabled, attempts to free a buffer that was allocated on the stack, which allows remote attackers to cause a denial of service (slapd crash) via a member MODDN operation.
Affected Software
Remediation
Patch Available
Event History
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).