CVE-2021-34995

CVSS 8.8 HIGHEPSS 68.9%CWE-434

Vexday Risk Score

33Attention

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.8EPSS 68.9%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

13 Jan 2022Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Commvault CommCell 11.22.22. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the DownloadCenterUploadHandler class. The issue results from the lack of proper validation of user-supplied data, which can allow the upload of arbitrary files. An attacker can leverage this vulnerability to execute code in the context of NETWORK SERVICE. Was ZDI-CAN-13756.

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Commvault · CommCell

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References

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