CVE-2023-21598 : Security Advisory and Response

This article provides detailed information about CVE-2023-21598, a Use-After-Free information disclosure vulnerability in Adobe InCopy.

Understanding CVE-2023-21598

CVE-2023-21598 is a vulnerability that affects Adobe InCopy versions 18.0 and earlier, as well as 17.4 and earlier. It is classified as a Use-After-Free vulnerability that could potentially lead to the disclosure of sensitive memory. Exploiting this vulnerability could allow an attacker to bypass certain mitigations like Address Space Layout Randomization (ASLR). However, successful exploitation requires user interaction, specifically the victim opening a malicious file.

What is CVE-2023-21598?

CVE-2023-21598 is a Use-After-Free vulnerability in Adobe InCopy software, allowing attackers to potentially access sensitive memory information. The vulnerability affects specific versions of the software, making it crucial for users to be aware of the associated risks.

The Impact of CVE-2023-21598

The impact of CVE-2023-21598 is classified as medium severity, with a base score of 5.5. The vulnerability allows for the potential disclosure of sensitive information, posing a risk to confidentiality. While the integrity and availability impacts are low, the confidentiality impact of the vulnerability is significant, highlighting the potential risks associated with exploitation.

Technical Details of CVE-2023-21598

CVE-2023-21598 is a Use-After-Free vulnerability (CWE-416) in Adobe InCopy software. The affected versions include 18.0 and earlier, as well as 17.4 and earlier.

Vulnerability Description

The vulnerability arises from a Use-After-Free flaw, potentially leading to the disclosure of sensitive memory information. Attackers could exploit this to bypass certain security measures and access confidential data.

Affected Systems and Versions

Adobe InCopy versions 18.0 and earlier, as well as 17.4 and earlier, are confirmed to be impacted by CVE-2023-21598. Users of these versions are at risk of exploitation if appropriate measures are not taken.

Exploitation Mechanism

To exploit CVE-2023-21598, an attacker would require a victim to interact with a malicious file. By triggering the Use-After-Free vulnerability, the attacker can potentially access sensitive memory, compromising the confidentiality of the system.

Mitigation and Prevention

It is essential for users of Adobe InCopy to take immediate steps to mitigate the risks associated with CVE-2023-21598.

Immediate Steps to Take

Users should update their Adobe InCopy software to the latest version available that includes patches to address CVE-2023-21598. Additionally, caution should be exercised when opening files from unknown or untrusted sources to prevent potential exploitation.

Long-Term Security Practices

Incorporating secure coding practices, regular security audits, and employee training on identifying suspicious files or links can help prevent similar vulnerabilities from being exploited in the future.

Patching and Updates

Adhering to Adobe's security advisories and promptly applying patches and updates released by the vendor is crucial to mitigating the risks posed by CVE-2023-21598. Regularly updating software helps in addressing known vulnerabilities and strengthening the overall security posture of the system.