Advisory Details

November 22nd, 2021

Commvault CommCell Demo_ExecuteProcessOnGroup Exposed Dangerous Function Remote Code Execution Vulnerability

ZDI-21-1331
ZDI-CAN-13889

CVE ID CVE-2021-34996
CVSS SCORE 8.8, (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
AFFECTED VENDORS Commvault
AFFECTED PRODUCTS CommCell
VULNERABILITY DETAILS

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

The specific flaw exists within the Demo_ExecuteProcessOnGroup workflow. By creating a workflow, an attacker can specify an arbitrary command to be executed. An attacker can leverage this vulnerability to execute code in the context of SYSTEM.

ADDITIONAL DETAILS

Fixed in Version 11.25


DISCLOSURE TIMELINE
  • 2021-06-30 - Vulnerability reported to vendor
  • 2021-11-22 - Coordinated public release of advisory
CREDIT Brandon Perry, Justin Kennedy and Steven Seeley of Source Incite
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