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RARLAB WinRAR Code Execution Vulnerability added to CISA Known Exploited Catalog - 20230829001

Overview

CISA has added CVE-2023-38831 to their Known Exploited Vulnerability Catalog.

RARLabs WinRAR before 6.23 allows attackers to execute arbitrary code when a user attempts to view a benign file within a ZIP archive. CISA reports this was exploited in the wild in April through August 2023.

What is the vulnerability?

CVE-2023-38831 - CVSS v3 Base Score: TBA

  • The issue occurs because a ZIP archive may include a benign file (such as an ordinary .JPG file) and also a folder that has the same name as the benign file, and the contents of the folder (which may include executable content) are processed during an attempt to access only the benign file. This was exploited in the wild in April through August 2023.

What is vulnerable?

The vulnerability exists in the following products:

  • WinRAR versions below 6.23

What has been observed?

There is no evidence of exploitation affecting Western Australian Government networks at the time of publishing.

Recommendation

The WA SOC recommends administrators apply the solutions as per vendor instructions to all affected devices within expected timeframe of two weeks... (refer Patch Management):

Additional Resources