CVE-2022-43702 : Vulnerability Insights and Analysis

A critical vulnerability has been identified in Arm products that could allow an attacker to execute malicious code by exploiting incomplete verification of installation file signatures.

Understanding CVE-2022-43702

This CVE exposes a weakness in the directory permissions of the installer, enabling an attacker with write access to modify or replace the installer and execute unauthorized code.

What is CVE-2022-43702?

When the directory containing the installer lacks proper file permissions, an attacker can tamper with the installer to run malicious code, potentially leading to privilege escalation (CAPEC-233).

The Impact of CVE-2022-43702

The vulnerability poses a significant risk as it allows threat actors to elevate their privileges by abusing the flawed verification process of installation file signatures, leading to unauthorized code execution.

Technical Details of CVE-2022-43702

Detailed technical information about the vulnerability includes:

Vulnerability Description

The vulnerability arises from inadequate directory permissions in the installer, allowing attackers to manipulate the installer and execute malicious code.

Affected Systems and Versions

Product: Arm Compiler 5 (AC5), Arm Compiler for Embedded 6 (AC6), Fast Models (FM), Arm Compiler for Embedded FuSA (ACEF), Arm Development Studio (ADS)
Vendor: Arm Ltd
Versions: AC5 All Releases, AC6 Releases prior to 6.20, ACEF All Releases, and more
Impact: Attackers with write access can exploit the vulnerability.

Exploitation Mechanism

To exploit this vulnerability, attackers need write access to one of the installer's files, enabling them to modify or replace the installer for malicious purposes.

Mitigation and Prevention

Protecting your systems against CVE-2022-43702 requires immediate actions and long-term security practices:

Immediate Steps to Take

Ensure strict file permissions for directories containing installers to prevent unauthorized modifications.

Long-Term Security Practices

Regularly monitor and update directory permissions to maintain a secure environment.

Patching and Updates

Apply patches and updates provided by Arm to address the vulnerability and enhance security measures.