CVE-2021-40697 : Vulnerability Insights and Analysis

Adobe FrameMaker versions 2019 Update 8 (and earlier) and 2020 Release Update 2 (and earlier) are affected by an out-of-bounds read vulnerability that could lead to the disclosure of sensitive memory. An attacker could exploit this vulnerability to bypass mitigations such as ASLR. Exploitation of this issue requires user interaction where a victim must open a malicious file.

Understanding CVE-2021-40697

Adobe FrameMaker PDF File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability

What is CVE-2021-40697?

CVE-2021-40697 is an out-of-bounds read vulnerability affecting Adobe FrameMaker versions 2019 Update 8 and 2020 Release Update 2 and earlier. This flaw could potentially result in the exposure of sensitive memory.

The Impact of CVE-2021-40697

The vulnerability has been rated with a CVSS base score of 3.3, indicating a low severity level. The attack complexity is low, and user interaction is required for exploitation. The confidentiality impact is low, and no privileges are required for an attack. However, the integrity impact is none.

Technical Details of CVE-2021-40697

Adobe FrameMaker versions 2019 Update 8 and 2020 Release Update 2 are affected by this vulnerability.

Vulnerability Description

The vulnerability is classified as an out-of-bounds read (CWE-125), enabling an attacker to access sensitive memory.

Affected Systems and Versions

Adobe FrameMaker versions 2019 Update 8 and earlier
Adobe FrameMaker versions 2020 Release Update 2 and earlier

Exploitation Mechanism

Attacker leverages the out-of-bounds read vulnerability to access sensitive memory
Can bypass mitigations like ASLR
Requires victim interaction to open a malicious file

Mitigation and Prevention

It is crucial to take immediate steps for mitigation and implement long-term security practices to prevent such vulnerabilities.

Immediate Steps to Take

Update Adobe FrameMaker to a non-vulnerable version
Be cautious of opening files from unknown or untrusted sources

Long-Term Security Practices

Regularly update software and apply patches promptly
Educate users on safe file handling practices

Patching and Updates

Refer to Adobe's security advisory for specific patches and updates