CVE-2017-17740

openSUSE Security Advisory - openSUSE-SU-2019:2176-1

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

contrib/slapd-modules/nops/nops.c en OpenLDAP hasta la versión 2.4.45, cuando el módulo nops y la capa memberof están activados, intenta liberar un búfer que se había asignado en la pila, lo que permite que los atacantes remotos provoquen una denegación de servicio (cierre inesperado de slapd) mediante una operación member MODDN.

An update that solves three vulnerabilities and has two fixes is now available. This update for openldap2 fixes the following issues. Fixed an authentication bypass when using SASL authentication and session encryption. Fixed an issue with delegated database admin privileges. When both the nops module and the member of overlay are enabled, attempts to free a buffer that was allocated on the stack, which allows remote attackers to cause a denial of service via a member MODDN operation. Transactional updates. This update was imported from the SUSE:SLE-15:Update update project.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-12-18 CVE Reserved
2017-12-18 CVE Published
2024-08-05 CVE Updated
2025-06-14 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

CAPEC

References (5)

URL	Tag	Source
https://kc.mcafee.com/corporate/index?page=content&id=SB10365	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://www.oracle.com/security-alerts/cpuapr2022.html	2022-06-13

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00053.html	2022-06-13
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00058.html	2022-06-13
http://www.openldap.org/its/index.cgi/Incoming?id=8759	2022-06-13

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Openldap Search vendor "Openldap"		Openldap Search vendor "Openldap" for product "Openldap"				<= 2.4.45 Search vendor "Openldap" for product "Openldap" and version " <= 2.4.45"		-		Affected
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				15.0 Search vendor "Opensuse" for product "Leap" and version "15.0"		-		Affected
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				15.1 Search vendor "Opensuse" for product "Leap" and version "15.1"		-		Affected
Oracle Search vendor "Oracle"		Blockchain Platform Search vendor "Oracle" for product "Blockchain Platform"				< 21.1.2 Search vendor "Oracle" for product "Blockchain Platform" and version " < 21.1.2"		-		Affected
Mcafee Search vendor "Mcafee"		Policy Auditor Search vendor "Mcafee" for product "Policy Auditor"				< 6.5.1 Search vendor "Mcafee" for product "Policy Auditor" and version " < 6.5.1"		-		Affected