CVE-2020-8027 : Vulnerability Insights and Analysis

A detailed overview of CVE-2020-8027, a vulnerability in openldap2 affecting various Linux distributions.

Understanding CVE-2020-8027

What is CVE-2020-8027?

CVE-2020-8027 is an Insecure Temporary File vulnerability in openldap2, impacting SUSE Linux Enterprise Server 15-LTSS, SUSE Linux Enterprise Server for SAP 15, openSUSE Leap 15.1, and openSUSE Leap 15.2. This vulnerability allows local attackers to overwrite arbitrary files and gain access to the openldap2 configuration.

The Impact of CVE-2020-8027

The vulnerability has a CVSS base score of 7.3, indicating a high severity issue with a significant impact on availability.

Technical Details of CVE-2020-8027

Vulnerability Description

The vulnerability in openldap2 allows local attackers to exploit fixed paths in /tmp, leading to unauthorized access and file overwriting.

Affected Systems and Versions

SUSE Linux Enterprise Server 15-LTSS: openldap2 versions prior to 2.4.46-9.37.1
SUSE Linux Enterprise Server for SAP 15: openldap2 versions prior to 2.4.46-9.37.1
openSUSE Leap 15.1: openldap2 versions prior to 2.4.46-lp151.10.18.1
openSUSE Leap 15.2: openldap2 versions prior to 2.4.46-lp152.14.9.1

Exploitation Mechanism

The vulnerability can be exploited locally by manipulating temporary files to gain unauthorized access and compromise system integrity.

Mitigation and Prevention

Immediate Steps to Take

Apply the recommended patches provided by the respective Linux distributions.
Monitor system logs for any suspicious activities related to file overwriting.

Long-Term Security Practices

Implement proper file permission settings to restrict unauthorized access.
Regularly update and patch software to address known vulnerabilities.

Patching and Updates

Ensure that openldap2 is updated to versions equal to or greater than 2.4.46-9.37.1 for SUSE Linux Enterprise Server 15-LTSS, SUSE Linux Enterprise Server for SAP 15, openSUSE Leap 15.1, and openSUSE Leap 15.2.