CVE-2017-17740

Name: CVE-2017-17740
Creator: NVD / NIST
Published: 2017-12-18T06:29:00.397+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 7.02%

Last modified Jun 17, 2026

CVE-2017-17740 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 7.02% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

7.02%

93.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
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

References

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00053.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00058.htmlMailing List, Third Party Advisory
http://www.openldap.org/its/index.cgi/Incoming?id=8759Issue Tracking, Vendor Advisory
https://kc.mcafee.com/corporate/index?page=content&id=SB10365Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00053.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00058.htmlMailing List, Third Party Advisory
http://www.openldap.org/its/index.cgi/Incoming?id=8759Issue Tracking, Vendor Advisory
https://kc.mcafee.com/corporate/index?page=content&id=SB10365Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory

Timeline

Published: Dec 18, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-17740?

How severe is CVE-2017-17740?

CVE-2017-17740 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 7.02% probability of exploitation in the next 30 days.

How do I fix CVE-2017-17740?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-17740?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST