CVE-2021-29093 : Security Advisory and Response

A detailed overview of the use-after-free vulnerability in Esri ArcGIS Server 10.8.1 and earlier versions, allowing for arbitrary code execution.

Understanding CVE-2021-29093

This CVE highlights a use-after-free vulnerability in Esri ArcGIS Server that enables an authenticated attacker to execute arbitrary code with specialized permissions.

What is CVE-2021-29093?

CVE-2021-29093 is a vulnerability found in ArcGIS Server that allows attackers to achieve arbitrary code execution by exploiting a use-after-free issue in the software.

The Impact of CVE-2021-29093

The impact of this vulnerability is rated as MEDIUM with a CVSS base score of 6.4. An attacker can gain high levels of confidentiality, integrity, and availability impact on affected systems.

Technical Details of CVE-2021-29093

This section covers the technical aspects of the CVE, including the vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability arises when parsing a specially crafted file in Esri ArcGIS Server 10.8.1, allowing the attacker to execute arbitrary code within the service account's context.

Affected Systems and Versions

The vulnerability affects ArcGIS Server, specifically versions 10.8.1 and earlier.

Exploitation Mechanism

To exploit this vulnerability, an authenticated attacker with specialized permissions needs to parse a malicious file in the ArcGIS Server environment.

Mitigation and Prevention

Learn about the immediate steps to take and the long-term security practices to mitigate the risk posed by CVE-2021-29093.

Immediate Steps to Take

Immediately update Esri ArcGIS Server to a non-affected version and restrict access to critical systems to authorized personnel only.

Long-Term Security Practices

Implement regular security training for employees, conduct security audits, and maintain up-to-date security protocols to prevent similar vulnerabilities.

Patching and Updates

Regularly check for security updates from Esri and apply patches promptly to address known vulnerabilities.