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CVE-2021-34995

Quick assessment

Affected
Commvault CommCell
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Commvault CommCell是美国Commvault公司的一款应用于企业环境的存储管理工具。 Commvault CommCell 中存在代码问题漏洞。该漏洞源于用户输入构造命令、数据结构或记录的操作过程中，网络系统或产品缺乏对用户输入数据的正确验证，未过滤或未正确过滤掉其中的特殊元素，导致系统或产品产生解析或解释方式错误。

AI Predicted 8.1 Difficulty: Easy EPSS 68.86% · P99
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I. Basic Information for CVE-2021-34995

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
危险类型文件的不加限制上传
Source: CVE Program / CVE List V5
Vulnerability Title
Commvault CommCell 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Commvault CommCell是美国Commvault公司的一款应用于企业环境的存储管理工具。 Commvault CommCell 中存在代码问题漏洞。该漏洞源于用户输入构造命令、数据结构或记录的操作过程中，网络系统或产品缺乏对用户输入数据的正确验证，未过滤或未正确过滤掉其中的特殊元素，导致系统或产品产生解析或解释方式错误。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Commvault CommCell 11.22.22 -

II. Public POCs for CVE-2021-34995

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III. Intelligence Information for CVE-2021-34995

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Vendor Advisories for CVE-2021-34995 (1)

Same Patch Batch · Commvault · 2022-01-13 · 5 CVEs total

CVE-2021-34993 Commvault CommCell 授权问题漏洞
CVE-2021-34994 Commvault CommCell 代码注入漏洞
CVE-2021-34996 Commvault CommCell 安全漏洞
CVE-2021-34997 Commvault CommCell 代码问题漏洞

IV. Related Vulnerabilities

Same product: CommCell
Same vendor: Commvault
Same weakness: CWE-434

V. Comments for CVE-2021-34995

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