Summary

• A vulnerability in the image conversion module 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 objects by the affected software when loading a plugin, resulting in a dangling pointer that leads to 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.

Analysis

• 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.

Safeguards

• 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.

Vendor Announcements

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

Fixed Software

• 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

Revision History

• Version	Description	Section	Date
  1	Initial public release.	—	2018-June-14

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Affected Products

• The security vulnerability applies to the following combinations of products.
  
  

  Primary Products
  Adobe	Reader	2017 (2017.011.30079)
  	Adobe Acrobat DC	2015.006.30403 (Base) | 2017.011.30078 (Base) | 2015.006.30417 (Base) | 2018.011.20038 (Base)
  	Adobe Acrobat Reader DC	2017.011.30078 (Base) | 2015.006.30403 (Base) | 2015.006.30417 (Base) | 2018.011.20038 (Base)
  	Acrobat 2017	2017.011.30079 (Base)

  Associated Products