Tuesday, July 10, 2018

Vulnerability Spotlight: Multiple Adobe Acrobat DC Remote Code Execution Vulnerabilties


Discovered by Aleksandar Nikolic of Cisco Talos

Overview

Today, Talos is releasing details of new vulnerabilities within Adobe Acrobat Reader DC. Adobe Acrobat Reader is the most popular and most feature-rich PDF reader. It has a big user base, is usually a default PDF reader on systems and integrates into web browsers as a plugin for rendering PDFs. As such, tricking a user into visiting a malicious web page or sending a specially crafted email attachment can be enough to trigger these vulnerabilities.

TALOS-2018-0569 - Adobe Acrobat Reader DC Collab.drivers Remote Code Execution Vulnerability (CVE-2018-12812)



A specific JavaScript code embedded in a PDF file can lead to an object type confusion when opening a PDF document in Adobe Acrobat Reader DC 2018.011.20038. With careful memory manipulation, this can lead to arbitrary code execution. In order to trigger this vulnerability, the victim would need to open the malicious file or access a malicious web page. Detailed vulnerability information can be found here.

TALOS-2018-0590 - Adobe Acrobat Reader DC Collab newWrStreamToCosObj Remote Code Execution Vulnerability (CVE-2018-12756)

A specific JavaScript code embedded in a PDF file can lead to an object type confusion when opening a PDF document in Adobe Acrobat Reader DC 2018.011.20038. With careful memory manipulation, this can lead to arbitrary code execution. In order to trigger this vulnerability, victim would need to open the malicious file or access a malicious web page. Detailed vulnerability information can be found here.

TALOS-2018-0592 - Adobe Acrobat Reader DC JSON Stringify Remote Code Execution Vulnerability (CVE-2018-12815)

A specific JavaScript code embedded in a PDF file can lead to a use-after-free condition when opening a PDF document in Adobe Acrobat Reader DC 2018.011.20038. With careful memory manipulation, this can lead to arbitrary code execution. In order to trigger this vulnerability, victim would need to open the malicious file or access a malicious web page. Detailed vulnerability information can be found here.

Known vulnerable versions

Adobe Acrobat Reader DC 2018.011.20038

Coverage

The following Snort Rules will detect exploitation attempts. Note that additional rules may be released at a future date and current rules are subject to change pending additional vulnerability information. For the most current rule information, please refer to your FireSIGHT Management Center or Snort.org.

Snort Rules: 46292-46293, 46550-46551, 46634-46635

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