UXSS Vulnerability in Adobe Acrobat PDF Extension for Chrome

Mitigation Strategies

The vulnerability affects Adobe Acrobat PDF Extension (Chrome) versions 26.5.2.2 and earlier. Since exploitation requires user interaction with a maliciously crafted URL or compromised web page, immediate mitigation steps include updating the Adobe Acrobat PDF Extension to a version later than 26.5.2.2 if available.

Additionally, educating users to avoid clicking on suspicious links or visiting untrusted websites can reduce the risk of exploitation.

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Compliance Impact

The vulnerability in Adobe Acrobat PDF Extension (Chrome) allows an attacker to gain access to data regarding the victim's session through a UXSS-class cross-origin data disclosure. This type of data exposure could potentially lead to unauthorized access to personal or sensitive information.

Such unauthorized data disclosure may impact compliance with data protection regulations like GDPR and HIPAA, which require safeguarding personal and sensitive information against unauthorized access and breaches.

However, exploitation requires user interaction, such as visiting a malicious URL or interacting with a compromised web page, which may influence the risk assessment under these standards.

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Executive Summary

This vulnerability affects Adobe Acrobat PDF Extension (Chrome) versions 26.5.2.2 and earlier. It is a UXSS-class cross-origin data disclosure vulnerability, meaning an attacker can exploit it to access data related to the victim's session across different origins. To exploit this vulnerability, the attacker needs the victim to interact with a maliciously crafted URL or a compromised web page.

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Impact Analysis

The vulnerability can lead to unauthorized disclosure of sensitive session data to an attacker. This could compromise the victim's privacy and security by exposing information that should be restricted to the user's session. Since the scope is changed, the impact extends beyond the vulnerable component, potentially affecting other parts of the user's browsing experience.

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