Advisory Details

June 10th, 2021

Adobe RoboHelp Server folderId Directory Traversal Remote Code Execution Vulnerability

ZDI-21-660
ZDI-CAN-13088

CVE ID CVE-2021-28588
CVSS SCORE 8.8, AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS Adobe
AFFECTED PRODUCTS RoboHelp Server
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Adobe RoboHelp Server. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.

The specific flaw exists within the RoboHelp server. When parsing the folderId parameter, the process does not properly validate a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of SYSTEM.

ADDITIONAL DETAILS Adobe has issued an update to correct this vulnerability. More details can be found at:
https://helpx.adobe.com/security/products/robohelp-server/apsb21-44.html
DISCLOSURE TIMELINE
  • 2021-04-02 - Vulnerability reported to vendor
  • 2021-06-10 - Coordinated public release of advisory
CREDIT Anonymous
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