CVE-2021-34993 — CRITICAL (9.8)

Vulnerability Description

This vulnerability allows remote attackers to bypass authentication on affected installations of Commvault CommCell 11.22.22. 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. Was ZDI-CAN-13706.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Commvault	Commcell	11.22.22

Related Weaknesses (CWE)

CWE-287

References

https://www.zerodayinitiative.com/advisories/ZDI-21-1328/Third Party AdvisoryVDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1328/Third Party AdvisoryVDB Entry

FAQ

What is CVE-2021-34993?

CVE-2021-34993 is a vulnerability with a CVSS score of 9.8 (CRITICAL). This vulnerability allows remote attackers to bypass authentication on affected installations of Commvault CommCell 11.22.22. Authentication is not required to exploit this vulnerability. The specific...

How severe is CVE-2021-34993?

CVE-2021-34993 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2021-34993?

Check the references section above for vendor advisories and patch information. Affected products include: Commvault Commcell.