CVE-2021-29094 : Exploit Details and Defense Strategies

A detailed overview of a buffer overflow vulnerability in Esri ArcGIS Server and the potential impact it poses.

Understanding CVE-2021-29094

This CVE identifies multiple buffer overflow vulnerabilities in Esri ArcGIS Server, allowing for arbitrary code execution under certain conditions.

What is CVE-2021-29094?

The CVE-2021-29094 pertains to the discovery of buffer overflow vulnerabilities in versions of Esri ArcGIS Server up to 10.9.0, which could enable an authenticated attacker to run arbitrary code within the service account's context.

The Impact of CVE-2021-29094

With a CVSS base score of 6.4 (Medium severity), this vulnerability presents a high risk to confidentiality, integrity, and availability. Attackers exploiting this vulnerability could execute unauthorized code through specially crafted files, compromising system security.

Technical Details of CVE-2021-29094

Explore the technical specifics of the buffer overflow vulnerability within Esri ArcGIS Server.

Vulnerability Description

The vulnerability arises from improper file parsing within Esri ArcGIS Server, potentially leading to buffer overflows and subsequent arbitrary code execution by malicious actors.

Affected Systems and Versions

Esri ArcGIS Server versions up to 10.9.0 are impacted by these buffer overflow vulnerabilities, particularly affecting x64 platforms.

Exploitation Mechanism

To exploit the vulnerability, attackers must possess authenticated access with specific permissions, allowing them to trigger the buffer overflow condition through manipulated files.

Mitigation and Prevention

Discover the essential steps to mitigate the risks associated with CVE-2021-29094 and safeguard systems against potential exploits.

Immediate Steps to Take

Organizations utilizing affected versions of ArcGIS Server must apply security updates promptly, limiting the potential for exploitation. Additionally, heightened monitoring of file inputs and system behavior is recommended.

Long-Term Security Practices

Implementing robust access control mechanisms, regular security assessments, and employee training on secure coding practices can enhance overall system security and reduce the likelihood of successful attacks.

Patching and Updates

Esri has released a security update addressing the buffer overflow vulnerabilities in ArcGIS Server versions. Users are urged to install the latest patches to protect their systems from potential threats.