A cybersecurity advisory was issued Thursday, Jan. 3, 2019, regarding multiple vulnerabilities in Adobe Acrobat and Reader. These vulnerabilities could allow arbitrary code execution which could lead to a breach.
What It Is:
Adobe Acrobat and Reader allow a user to view, create, manipulate, print and manage files in Portable Document Format (PDF). Successful exploitation of the most severe of these vulnerabilities could result in the attacker gaining control of the affected system.
Depending on the privileges associated with the user, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. If this application has been configured to have fewer user rights on the system, exploitation of the most severe of these vulnerabilities could have less impact than if it was configured with administrative rights.
There are no reports of these vulnerabilities being exploited in the wild.
What It Means:
If your business or organization employs Adobe Acrobat or Adobe Reader, you will need to apply the appropriate patches after testing to prevent a possible security breach.
Systems Affected Include:
• Acrobat DC (Continuous Track) for Windows and macOS version 2019.010.20064 and prior
• Acrobat Reader DC (Continuous Track) for Windows and macOS version 2019.010.20064 and prior
• Acrobat 2017 (Classic 2017 Track) for Windows and macOS version 2017.011.30110 and prior
• Acrobat Reader DC 2017 (Classic 2017 Track) for Windows and macOS version 2017.011.30110 and prior
• Acrobat DC (Classic 2015 Track) for Windows and macOS version 2015.006.30461 and prior
• Acrobat Reader DC (Classic 2015 Track) for Windows and macOS version 2015.006.30461 and prior
• Large and medium government entities: High
• Small government entities: Medium
• Large and medium business entities: High
• Small business entities: Medium
Home users: Low
Multiple vulnerabilities have been discovered in Adobe Acrobat and Adobe Reader, the most severe of which could allow for arbitrary code execution. The vulnerabilities are as follows:
• Multiple security bypass privilege escalation (CVE-2018-16018)
• Multiple use after free arbitrary code execution (CVE-2018-16011)
What To Do:
We recommend the following actions be taken:
• Install the updates provided by Adobe immediately after appropriate testing.
• Run all software as a non-privileged user (one without administrative privileges) to diminish the effects of a successful attack.
• Remind users not to visit websites or follow links provided by unknown or untrusted sources.
• Inform and educate users regarding the threats posed by hypertext links contained in emails or attachments especially from untrusted sources.
• Apply the Principle of Least Privilege to all systems and services.
Negative Consequences of Lost or Stolen Data:
The loss or theft of proprietary data can have severe impacts, particularly if the compromise becomes public and sensitive information is exposed. Possible impacts include:
• Temporary or permanent loss of sensitive or proprietary information.
• Disruption to regular operations.
• Financial losses incurred to restore systems and files.
• Potential harm to an organization’s reputation.
Should your agency or business need assistance with the detection of vulnerabilities in any of the above products or updates to include patches, Dox can help. Please contact Dox if there is anything we can do to assist in securing your agency, business, or organization.
Thank you for your time and stay safe online.