CVE-2021-45054 : Exploit Details and Defense Strategies

Adobe InCopy version 16.4 (and earlier) is affected by a use-after-free vulnerability in the processing of a JPEG2000 file, potentially leading to the disclosure of sensitive memory. User interaction is required to exploit this vulnerability.

Understanding CVE-2021-45054

Adobe InCopy JPEG2000 Parsing Use-After-Free Information Disclosure Vulnerability

What is CVE-2021-45054?

The CVE-2021-45054 vulnerability is a use-after-free issue in Adobe InCopy version 16.4 and prior versions when processing JPEG2000 files, allowing an attacker to access sensitive memory and potentially bypass mitigations like ASLR.

The Impact of CVE-2021-45054

Base Score: 3.3 (Low Severity)
Attack Complexity: Low
Attack Vector: Local
User Interaction: Required
Exploitation requires the victim to open a malicious file, potentially leading to data disclosure.

Technical Details of CVE-2021-45054

The technical aspects of the vulnerability

Vulnerability Description

Adobe InCopy 16.4 and earlier versions are susceptible to a use-after-free vulnerability during JPEG2000 file parsing.

Affected Systems and Versions

Affected Product: Adobe InCopy
Vendor: Adobe
Vulnerable Versions: <= 16.4

Exploitation Mechanism

Attacker needs to manipulate a crafted JPEG2000 file, which, when opened by a victim, triggers the vulnerability.

Mitigation and Prevention

Ways to address and prevent the CVE-2021-45054 vulnerability

Immediate Steps to Take

Update Adobe InCopy to a patched version.
Exercise caution when opening files, especially from unknown sources.

Long-Term Security Practices

Regularly check for software updates and security advisories from Adobe.
Educate users about the risks associated with opening files from untrusted sources.

Patching and Updates

Adobe released a security advisory (APSB22-04) addressing the vulnerability. Ensure timely installation of this update.