Vulnerability · Published Jan 13, 2022 · Assigned by zdi

CVE-2021-34993

Critical 9.8

In plain English

A critical-severity improper authentication in CommCell from Commvault. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 5.8% (higher than 93% of all known vulnerabilities).

Severity (CVSS 3.0)9.8Critical

Exploit odds (30 days)5.8%top 6.8% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Commvault	CommCell	11.22.22

Weakness: CWE-287 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

https://www.zerodayinitiative.com/advisories/ZDI-21-1328/ x_refsource_MISC