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CVE-2021-34995

Published: Jan 13, 2022Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-434
8.8HIGH
NVD MITRE
EPSS Score
68.9%
Top 0.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-434

Affected Products

Commvault
commercial
CommCellOn-prem
Enterprise Software / itsm-monitoring
Commvault Systems Inc.
commercialaka commcell, commvault edge
CommCellOn-prem
Enterprise Software / itsm-monitoring
and 1 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2021-34995?Request an assessment to establish which checks are appropriate for your systems. Check my exposure

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

3 techniques
Command and Control
Initial Access
Persistence
View detailed technique mapping

References

https://www.zerodayinitiative.com/advisories/ZDI-21-1330/
zerodayinitiative.com
https://www.zerodayinitiative.com/advisories/ZDI-21-1330
zerodayinitiative.com
https://www.cybersecurity-help.cz/vdb/SB2021112404
cybersecurity-help.cz

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