CVE-2021-46626 Explained : Impact and Mitigation

A vulnerability in Bentley View 10.15.0.75 allows remote attackers to execute arbitrary code, posing a significant threat to affected installations.

Understanding CVE-2021-46626

This CVE involves a security issue in Bentley View 10.15.0.75 that enables attackers to execute malicious code remotely.

What is CVE-2021-46626?

The vulnerability permits the execution of arbitrary code on Bentley View 10.15.0.75 installations.
Attackers can trigger this flaw by manipulating J2K images, causing a buffer overflow.
User interaction is necessary as victims must access a compromised webpage or file.

The Impact of CVE-2021-46626

This vulnerability has the following impact:

CVSS Base Score: 7.8 (High)
Attack Vector: Local
Confidentiality, Integrity, and Availability Impact: High
Privileges Required: None
User Interaction: Required

Technical Details of CVE-2021-46626

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

The flaw resides in the parsing of J2K images, leading to a buffer over-read.
Exploiting this issue allows attackers to execute code within the current process context.

Affected Systems and Versions

Product: Bentley View
Version: 10.15.0.75

Exploitation Mechanism

Attackers craft malicious data within J2K images to trigger buffer overflows.
By enticing users to interact with a compromised page or file, attackers can execute code.

Mitigation and Prevention

Protecting systems from CVE-2021-46626 requires immediate actions and long-term security measures.

Immediate Steps to Take

Update Bentley View to a patched version.
Avoid opening files or visiting websites from untrusted sources.
Employ network security measures to detect and prevent malicious activities.

Long-Term Security Practices

Regularly monitor security advisories from Bentley for updates.
Train users on identifying and avoiding phishing attempts.
Implement defense-in-depth strategies to mitigate future vulnerabilities.

Patching and Updates

Apply security patches released by Bentley promptly.
Conduct periodic security assessments to identify and remediate vulnerabilities.