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CVE-2023-33956— Parameter based Indirect Object Referencing leading to private file exposure in Kanboard

Quick assessment

Affected
kanboard kanboard
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Kanboard是一套开源的可视化任务板软件。该软件能够根据业务定制面板。 Kanboard 1.2.30之前版本存在信息泄露漏洞，该漏洞源于在应用程序URL参数中存在不安全直接对象引用(IDOR)漏洞，任何用户都可以读取其他用户上传的文件。

CVSS 4.3 · Medium EPSS 0.62% · P48

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2023-33956

Vulnerability Information
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Vulnerability Title
Parameter based Indirect Object Referencing leading to private file exposure in Kanboard
Source: CVE Program / CVE List V5
Vulnerability Description
Kanboard is open source project management software that focuses on the Kanban methodology. Versions prior to 1.2.30 are subject to an Insecure direct object reference (IDOR) vulnerability present in the application's URL parameter. This vulnerability enables any user to read files uploaded by any other user, regardless of their privileges or restrictions. By Changing the file_id any user can render all the files where MimeType is image uploaded under **/files** directory regard less of uploaded by any user. This vulnerability poses a significant impact and severity to the application's security. By manipulating the URL parameter, an attacker can access sensitive files that should only be available to authorized users. This includes confidential documents or any other type of file stored within the application. The ability to read these files can lead to various detrimental consequences, such as unauthorized disclosure of sensitive information, privacy breaches, intellectual property theft, or exposure of trade secrets. Additionally, it could result in legal and regulatory implications, reputation damage, financial losses, and potential compromise of user trust. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Kanboard 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kanboard是一套开源的可视化任务板软件。该软件能够根据业务定制面板。 Kanboard 1.2.30之前版本存在信息泄露漏洞，该漏洞源于在应用程序URL参数中存在不安全直接对象引用(IDOR)漏洞，任何用户都可以读取其他用户上传的文件。
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
kanboard kanboard < 1.2.30 -

II. Public POCs for CVE-2023-33956

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III. Intelligence Information for CVE-2023-33956

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Patches & Fixes for CVE-2023-33956 (1)

Vendor Advisories for CVE-2023-33956 (1)

Same Patch Batch · kanboard · 2023-06-05 · 4 CVEs total

CVE-2023-33969 6.4 MEDIUM Stored Cross site scripting in the Task External Link Functionality in Kanboard
CVE-2023-33970 5.4 MEDIUM Missing access control in internal task links feature in Kanboard
CVE-2023-33968 5.4 MEDIUM Missing Access Control allows User to move and duplicate tasks in Kanboard

IV. Related Vulnerabilities

Same product: kanboard
Same vendor: kanboard
Same weakness: CWE-200

V. Comments for CVE-2023-33956

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