Adobe Security Bulletin

Security updates available for Creative Cloud Desktop Application | APSB18-12

Bulletin ID

Date Published

Priority

APSB18-12

May 8, 2018

2

Summary

Adobe has released a security update for the Creative Cloud Desktop Application for Windows and MacOS. This update resolves a vulnerability in the validation of certificates used by Creative Cloud desktop applications (CVE-2018-4991), and an improper input validation vulnerability (CVE-2018-4992) that could lead to privilege escalation.

Affected versions

Product

Affected version

Platform

Creative Cloud Desktop Application

4.4.1.298 and earlier versions

Windows and MacOS

To check the version of the Adobe Creative Cloud desktop app:

  1. Launch the Creative Cloud desktop app and sign in with your Adobe ID.
  2. Click the gear icon and choose Preferences > General.

Solution

Adobe categorizes this update with the following priority rating and recommends users update their installation to the newest version:

Product

Updated version

Platform

Priority rating

Availability

Creative Cloud Desktop Application

Creative Cloud 4.5.0.331

Windows and MacOS

2

Customers who have enabled auto-update will automatically receive the new version. The latest Creative Cloud Desktop App can also be downloaded from the Download Center. For more information, please reference this help Page.  

For managed environments, IT administrators can use the Creative Cloud Packager to create deployment packages. Refer to this help page for more information on the Creative Cloud Packager. 

Vulnerability Details

Vulnerability Category

Vulnerability Impact

Severity

CVE Numbers

Improper input validation

Privilege Escalation

Important

CVE-2018-4992

Improper certificate validation

Security bypass

Critical

CVE-2018-4991

Unquoted Search Path

Privilege Escalation

Important

CVE-2018-4873

Note: CVE-2018-4873 was previously resolved in version 4.3.0.256 of the Creative Cloud Desktop application.

Acknowledgments

Adobe would like to thank the following individuals and organizations for reporting the relevant issues and for working with Adobe to help protect our customers: 

  • Wei Wei (@Danny__Wei) of Tencent's Xuanwu Lab (CVE-2018-4992)
  • Ryan Hileman of Talon Voice & Chi Chou (CVE-2018-4991)
  • Cyril Vallicari / HTTPCS – Ziwit (CVE-2018-4873)

 Adobe

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