Adobe Acrobat XML Formal Architecture Object Mismatch Use-After-Free Arbitrary Code Execution Vulnerability [CVE-2018-4977]

CVE Number = CVE-2018-4977

A vulnerability in the XML Formal Architecture engine of Adobe Acrobat DC and Adobe Acrobat Reader DC could allow an unauthenticated, remote attacker to execute arbitrary code on a targeted system.

The vulnerability is due to a mismatch between old and new event objects, resulting in a use-after-free memory error that could allow improper memory access. An attacker could exploit the vulnerability by persuading a user to access a link or file that submits malicious input to the affected software. A successful exploit could allow the attacker to execute arbitrary code and compromise the system completely.

Adobe has confirmed the vulnerability and released software updates.

• To exploit this vulnerability, the attacker may use misleading language or instructions to persuade a user to access a link or file that submits malicious input to the affected software.

• Administrators are advised to apply the appropriate updates.

  Administrators are advised to allow only trusted users to have network access.

  Users are advised not to open email messages from suspicious or unrecognized sources. If users cannot verify that links or attachments included in email messages are safe, they are advised not to open them.

  Users are advised not to visit websites or follow links that have suspicious characteristics or cannot be verified as safe.

  Administrators are advised to use an unprivileged account when browsing the Internet.

  Administrators are advised to monitor critical systems.

• Adobe has confirmed the vulnerability and released a security bulletin at the following link: APSB18-02

• Adobe has released software updates at the following links:

  • Acrobat Reader DC Classic track version 2015.006.30413 for Windows
  • Acrobat Reader DC Classic track version 2015.006.30416 for Mac
  • Acrobat Reader DC Continuous track version 2018.011.20035 for Windows
  • Acrobat Reader DC Continuous track version 2018.011.20035 for Windows
  • Acrobat DC Continuous track version 2018.011.20035 for Windows
  • Acrobat DC Continuous track version 2018.011.20035 for Mac
  • Acrobat DC Classic track version 2015.006.30413 for Windows
  • Acrobat DC Classic track version 2015.006.30416 for Mac
  • Acrobat Reader 2017 version 2017.011.30078 for Windows
  • Acrobat Reader 2017 version 2017.011.30078 for Mac
  • Acrobat 2017 version 2017.011.30078 for Windows
  • Acrobat 2017 version 2017.011.30078 for Mac

Duncan

Duncan is a technology professional with over 20 years experience of working in various IT roles. He has a interest in cyber security, and has a wide range of other skills in radio, electronics and telecommunications.