CVE-2018-10935

A flaw was found in the 389 Directory Server that allows users to cause a crash in the LDAP server using ldapsearch with server side sort.

The product does not properly control the allocation and maintenance of a limited resource.

Name	Vendor	Start Version	End Version
389_directory_server	Redhat	1.3.0.0 (including)	1.3.8.7 (excluding)
389_directory_server	Redhat	1.4.0.0 (including)	1.4.0.14 (excluding)
Red Hat Enterprise Linux 7	RedHat	389-ds-base-0:1.3.7.5-28.el7_5	*
389-ds-base	Ubuntu	bionic	*
389-ds-base	Ubuntu	cosmic	*
389-ds-base	Ubuntu	esm-apps/bionic	*
389-ds-base	Ubuntu	esm-apps/xenial	*
389-ds-base	Ubuntu	trusty	*
389-ds-base	Ubuntu	upstream	*
389-ds-base	Ubuntu	xenial	*

Mitigation of resource exhaustion attacks requires that the target system either:
The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.
The second solution is simply difficult to effectively institute – and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.

NVD	https://nvd.nist.gov/vuln/detail/CVE-2018-10935
CWE	https://cwe.mitre.org/data/definitions/400.html

Uncontrolled Resource Consumption