Patchfirst
CVE-2021-34995 High · 8.8 EPSS 68.9%

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Commvault CommCell…

Commvault · CommCell

Summary

The flaw is an unrestricted file upload weakness in the DownloadCenterUploadHandler class of Commvault CommCell 11.22.22, caused by missing validation of user-supplied data. A remote attacker can exploit it over the network, with the authentication mechanism bypassed, to upload arbitrary files and execute code in the context of NETWORK SERVICE.

Official description · CVE.org

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.

Breakdown
26.0 / 100
Exploited
Not confirmed
Reports
0
Tactics
0/15

Disclosed on 13 Jan 2022. No public exploit code or confirmed exploitation is recorded.

techniques

No techniques linked

No ATT&CK techniques are linked to this CVE yet. MITRE CTID has not mapped it, and no report passage in the corpus ties it to a technique.

What security researchers reported

Not named in any threat report yet

References

1 link, grouped by NVD tag
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