Arbitrary Code Execution in Commvault CommCell by Commvault
CVE-2021-34994

8.8HIGH

Key Information:

Vendor

Commvault

Status
Commcell
Vendor
CVE Published:
13 January 2022

What is CVE-2021-34994?

This vulnerability enables remote attackers to execute arbitrary code on vulnerable instances of Commvault CommCell 11.22.22. Although the exploitation requires authentication, the existing authentication mechanism can be bypassed. The root cause of this vulnerability lies within the DataProvider class, where there is inadequate validation of user-supplied input before it is executed as JavaScript code. This allows an attacker to escape the JavaScript sandbox, leading to the potential execution of Java code with elevated privileges in the context of NETWORK SERVICE.

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Affected Version(s)

CommCell 11.22.22

References

https://www.zerodayinitiative.com/advisories/ZDI-21-1329/
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CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Brandon Perry, Justin Kennedy and Steven Seeley of Source Incite
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