CVE-2018-1054 : Exploit Details and Defense Strategies

A vulnerability was discovered in the way 389-ds-base processed specific LDAP search filters, affecting all versions, including 1.4.x. This vulnerability could allow an unauthorized attacker to cause ns-slapd to crash by sending a carefully crafted LDAP request, leading to a denial of service.

Understanding CVE-2018-1054

An out-of-bounds memory read flaw was found in the way 389-ds-base handled certain LDAP search filters, affecting all versions including 1.4.x. A remote, unauthenticated attacker could potentially use this flaw to make ns-slapd crash via a specially crafted LDAP request, thus resulting in denial of service.

What is CVE-2018-1054?

The vulnerability in 389-ds-base allows an unauthorized attacker to crash ns-slapd by sending a malicious LDAP request, leading to a denial of service.

The Impact of CVE-2018-1054

An attacker could exploit this vulnerability to crash ns-slapd, causing a denial of service.

Technical Details of CVE-2018-1054

The technical details of the CVE-2018-1054 vulnerability are as follows:

Vulnerability Description

The flaw in 389-ds-base allows for an out-of-bounds memory read, potentially leading to a crash.

Affected Systems and Versions

Product: 389-ds-base
Vendor: Red Hat, Inc.
Versions: All versions including upstream 1.4.x

Exploitation Mechanism

An unauthorized attacker can exploit this vulnerability by sending a specially crafted LDAP request to crash ns-slapd.

Mitigation and Prevention

Steps to address and prevent the CVE-2018-1054 vulnerability:

Immediate Steps to Take

Apply the patches provided by Red Hat, Inc.
Monitor for any unusual LDAP requests.

Long-Term Security Practices

Regularly update and patch 389-ds-base to the latest version.
Implement network segmentation to limit the impact of potential attacks.
Conduct regular security audits and assessments.

Patching and Updates

Refer to the Red Hat Security Advisories RHSA-2018:0414 and RHSA-2018:0515 for patching guidance.