Arbitrary Code Execution Vulnerability in Commvault CommCell by Commvault
CVE-2021-34995

8.8HIGH

Key Information:

Vendor

Commvault

Status
Commcell
Vendor
CVE Published:
13 January 2022

What is CVE-2021-34995?

This vulnerability permits remote attackers to execute arbitrary code on vulnerable installations of Commvault CommCell 11.22.22. Though authentication is needed for exploitation, the existing authentication mechanisms can be bypassed. The flaw resides within the DownloadCenterUploadHandler class, primarily due to insufficient validation of user-supplied data. This weakness could enable attackers to upload arbitrary files, ultimately allowing them to execute code under the context of NETWORK SERVICE.

Affected Version(s)

CommCell 11.22.22

References

https://www.zerodayinitiative.com/advisories/ZDI-21-1330/
x_refsource_MISC

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
.
CVE-2021-34995 : Arbitrary Code Execution Vulnerability in Commvault CommCell by Commvault