Advisory Details

November 22nd, 2021

Commvault CommCell CVSearchService Authentication Bypass Vulnerability

ZDI-21-1328
ZDI-CAN-13706

CVE ID CVE-2021-34993
CVSS SCORE 9.8, AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS Commvault
AFFECTED PRODUCTS CommCell
VULNERABILITY DETAILS

This vulnerability allows remote attackers to bypass authentication on affected installations of Commvault CommCell. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the CVSearchService service. The issue results from the lack of proper validation prior to authentication. An attacker can leverage this vulnerability to bypass authentication on the 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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