CVE-2021-29117 : Vulnerability Insights and Analysis

A critical security vulnerability has been identified in Esri ArcReader version 10.8.1 and earlier, designated as CVE-2021-29117, which could allow an unauthenticated attacker to execute arbitrary code on the affected system. This CVE was made public on February 7, 2022.

Understanding CVE-2021-29117

Esri ArcReader versions prior to 10.8.2 are affected by a use-after-free vulnerability, posing a high risk to confidentiality, integrity, and availability.

What is CVE-2021-29117?

CVE-2021-29117 is a use-after-free vulnerability found in Esri ArcReader 10.8.1 and earlier versions. This flaw enables an attacker to potentially execute malicious code on the victim's machine.

The Impact of CVE-2021-29117

The impact of this vulnerability is severe, as it allows an unauthenticated attacker to achieve arbitrary code execution in the context of the current user. This could lead to unauthorized access, data theft, or complete system compromise.

Technical Details of CVE-2021-29117

The technical details of this CVE include the following:

Vulnerability Description

The vulnerability arises when a maliciously crafted file is processed by the affected software, triggering a use-after-free condition that can be exploited by an attacker.

Affected Systems and Versions

Esri ArcReader version 10.8.1 and earlier on x86 Windows platforms are susceptible to this vulnerability. Versions prior to 10.8.2 are affected.

Exploitation Mechanism

An unauthenticated attacker can exploit this vulnerability by enticing a user to open a specially crafted file using the vulnerable software, leading to arbitrary code execution.

Mitigation and Prevention

It is crucial to take immediate steps to address CVE-2021-29117 to safeguard your systems and data from potential exploitation.

Immediate Steps to Take

Upgrade to Esri ArcReader version 10.8.2 or later to mitigate the vulnerability.
Avoid opening files from untrusted or unknown sources to prevent potential attacks.

Long-Term Security Practices

Regularly update your software to the latest versions to address known security issues.
Educate users about practicing caution while interacting with files or links, especially from unfamiliar sources.

Patching and Updates

Keep track of security advisories from Esri and promptly apply patches and updates to ensure your systems are protected against known vulnerabilities.