CVE-2021-29101 Explained : Impact and Mitigation

ArcGIS GeoEvent Server versions 10.8.1 and below have a read-only directory path traversal vulnerability that could allow an unauthenticated, remote attacker to perform directory traversal attacks and read arbitrary files on the system.

Understanding CVE-2021-29101

This CVE identifies a security vulnerability in Esri's ArcGIS GeoEvent Server that could be exploited by a remote attacker to traverse directories and access unauthorized files on the system.

What is CVE-2021-29101?

The vulnerability in ArcGIS GeoEvent Server versions 10.8.1 and below enables attackers to perform directory traversal attacks, compromising the confidentiality of sensitive data.

The Impact of CVE-2021-29101

With a CVSS base score of 8.6, this vulnerability has a high severity level, primarily affecting the confidentiality of the system by allowing unauthorized access to files via directory traversal.

Technical Details of CVE-2021-29101

Esri's ArcGIS GeoEvent Server vulnerability is categorized under CWE-23: Relative Path Traversal.

Vulnerability Description

The security flaw allows unauthenticated remote attackers to exploit a read-only directory path traversal vulnerability in affected ArcGIS GeoEvent Server versions.

Affected Systems and Versions

The vulnerability impacts all x64 platforms running ArcGIS GeoEvent Server versions equal to or less than 10.8.1.

Exploitation Mechanism

Through network-based attack vectors, threat actors can utilize low attack complexity to read arbitrary files, compromising the integrity and confidentiality of the system.

Mitigation and Prevention

Esri has promptly addressed the security issue by releasing a patch to mitigate the vulnerability.

Immediate Steps to Take

Users are strongly advised to apply the security patch provided by Esri to prevent exploitation of this vulnerability.

Long-Term Security Practices

Regularly updating software and applying security patches can help protect systems from potential threats and vulnerabilities.

Patching and Updates

Ensure timely installation of security updates and patches to maintain the security and integrity of ArcGIS GeoEvent Server.